This is required when hot-removing a vfio-user device. Details code path
below:
Thread 6 "vcpu0" received signal SIGSYS, Bad system call.
[Switching to Thread 0x7f8196889700 (LWP 2358305)]
0x00007f8196dae7ab in shutdown () at ../sysdeps/unix/syscall-template.S:78
78 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
(gdb) bt
0x00007f8196dae7ab in shutdown () at ../sysdeps/unix/syscall-template.S:78
0x000056189240737d in std::sys::unix::net::Socket::shutdown ()
at library/std/src/sys/unix/net.rs:383
std::os::unix::net::stream::UnixStream::shutdown () at library/std/src/os/unix/net/stream.rs:479
0x000056189210e23d in vfio_user::Client::shutdown (self=0x7f8190014300)
at vfio_user/src/lib.rs:787
0x00005618920b9d02 in <pci::vfio_user::VfioUserPciDevice as core::ops::drop::Drop>::drop (
self=0x7f819002d7c0) at pci/src/vfio_user.rs:551
0x00005618920b8787 in core::ptr::drop_in_place<pci::vfio_user::VfioUserPciDevice> ()
at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ptr/mod.rs:188
0x00005618920b92e3 in core::ptr::drop_in_place<core::cell::UnsafeCell<dyn pci::device::PciDevice>>
() at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ptr/mod.rs:188
0x00005618920b9362 in core::ptr::drop_in_place<std::sync::mutex::Mutex<dyn pci::device::PciDevice>> () at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ptr/mod.rs:188
0x00005618920d8a3e in alloc::sync::Arc<T>::drop_slow (self=0x7f81968852b8)
at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/alloc/src/sync.rs:1092
0x00005618920ba273 in <alloc::sync::Arc<T> as core::ops::drop::Drop>::drop (self=0x7f81968852b8)
at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/alloc/src/sync.rs:1688
0x00005618920b76fb in core::ptr::drop_in_place<alloc::sync::Arc<std::sync::mutex::Mutex<dyn pci::device::PciDevice>>> ()
at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ptr/mod.rs:188
0x0000561891b5e47d in vmm::device_manager::DeviceManager::eject_device (self=0x7f8190009600,
pci_segment_id=0, device_id=3) at vmm/src/device_manager.rs:4000
0x0000561891b674bc in <vmm::device_manager::DeviceManager as vm_device::bus::BusDevice>::write (
self=0x7f8190009600, base=70368744108032, offset=8, data=&[u8](size=4) = {...})
at vmm/src/device_manager.rs:4625
0x00005618921927d5 in vm_device::bus::Bus::write (self=0x7f8190006e00, addr=70368744108040,
data=&[u8](size=4) = {...}) at vm-device/src/bus.rs:235
0x0000561891b72e10 in <vmm::vm::VmOps as hypervisor::vm::VmmOps>::mmio_write (
self=0x7f81900097b0, gpa=70368744108040, data=&[u8](size=4) = {...}) at vmm/src/vm.rs:378
0x0000561892133ae2 in <hypervisor::kvm::KvmVcpu as hypervisor::cpu::Vcpu>::run (
self=0x7f8190013c90) at hypervisor/src/kvm/mod.rs:1114
0x0000561891914e85 in vmm::cpu::Vcpu::run (self=0x7f819001b230) at vmm/src/cpu.rs:348
0x000056189189f2cb in vmm::cpu::CpuManager::start_vcpu::{{closure}}::{{closure}} ()
at vmm/src/cpu.rs:953
Signed-off-by: Bo Chen <chen.bo@intel.com>
(cherry picked from commit 42c19e14c5)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
All hotpluggable devices were properly removed from the VmConfig when a
remove-device command was issued, except for the "fs" type. Fix this
lack of support as it is causing the integration tests to fail with the
recent addition of verifying that identifiers are unique.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
(cherry picked from commit a5a2e591c9)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This prevents a conflict since the old API socket will not have been
cleaned up (due to the use of SIGKILL.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
(cherry picked from commit 4fed2d4ed7)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The I/O operations knobs are prefixed `ops_` rather than `bw_`, as `bw_`
refers to the "bandwidth" knobs.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
(cherry picked from commit a87d1bbaa1)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The calls to these functions are always preceded by a call to
InterruptSourceGroup::update(). By adding a masked boolean to that
function call it possible to remove 50% of the calls to the
KVM_SET_GSI_ROUTING ioctl as the the update will correctly handle the
masked or unmasked case.
This causes the ioctl to disappear from the perf report for a boot of
the VM.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
It suffered from the same issue like the main program after switching to
Rust 2021 edition, but the issue was not caught by the CI.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
EDK2 execution requires a flash device at address 0.
The new added device is not a fully functional flash. It doesn't
implement any spec of a flash device. Instead, a piece of memory is used
to simulate the flash simply.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
We modified a test case to workaround the RAM calculation error caused
by hidding 4MiB memory for UEFI. Now change it back to normal.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Size of `memory` node in FDT was reduced by 4MiB. Now it is returned.
In memory regions, a `Ram` region of 4MiB was created at address 0. Now
it is removed.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Rust 2021 edition has a few improvements over the 2018 edition. Migrate
the project to 2021 edition by following recommended migration steps.
Luckily, the code itself doesn't require fixing.
Bump MSRV to 1.56 as it is required by the 2021 edition. Also fix the
clap build dependency to make Cloud Hypervisor build again.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This is a refactoring commit to simplify source code.
Removed some functions that only return a layout const.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Some addresses defined in `layout.rs` were of type `GuestAddress`, and
are `u64`. Now align the types of all the `*_START` definitions to
`GuestAddress`.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Now that address translations performed by virtio-iommu can error out if
the address can't be translated, we uncovered an issue in integration
test aarch64_acpi::test_virtio_iommu.
We disable the test until we can investigate and fix the root cause.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
It doesn't matter if we're trying to translate a GVA or a GPA address,
but in both cases we must error out if the address couldn't be
translated.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Remove EOLed distributions and clarify the stability guarantees and what
the experimental features are.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The reserved space is for devices.
Some devices (like TPM) require arbitrary addresses close to 4GiB.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
`RAM_64BIT_START` was set to 1 GiB, not a real 64-bit address. Now
rename it `RAM_START` to avoid confusion.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
The extra vDPA device in the test is hotplugged behind the vIOMMU, which
covers the use case of placing a vDPA device behind a virtual IOMMU.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Whenever a virtio device is placed behind a vIOMMU, we have some code in
pci_common_config.rs to translate the queue addresses (descriptor table,
available ring and used ring) from GVA to GPA, so that they can be used
correctly.
But in case of vDPA, we also need to provide the queue addresses to the
vhost backend. And since the vhost backend deals with consistent IOVAs,
all addresses being provided should be GVAs if the device is placed
being a vIOMMU. For that reason, we perform a translation of the queue
addresses back from GPA to GVA if necessary, and only to be provided to
the vhost backend.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add a new iommu parameter to VdpaConfig in order to place the vDPA
device behind a virtual IOMMU.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In case an external mapping would have been added after the virtio-iommu
device has been activated, it would have simply be ignored because the
code wasn't using a shared object between the vmm thread and the iommu
thread. This behavior is only triggered on the hotplug codepath, and
only if the hotplugged device is placed behind the virtual IOMMU.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In anticipation for the vDPA need to translate a GPA back into a GVA, we
extend the existing trait DmaRemapping and AccessPlatform to perform
such operation.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Renaming translate() to translate_gva() to clarify we want to translate
a GVA address into a GPA.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
According to latest official images based on latest TDX guest kernel, we
update the documentation to reflect the change regarding serial support.
New guest kernels have been updated to disable usage of serial ports,
meaning adding console=ttyS0 to the kernel boot parameters will have no
effect.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The list of memory resources provided through the HOB wasn't accurate
because of the broken logic. The fix provides correct ranges to the
firmware.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on latest QEMU patches from branch tdx-qemu-2022.03.29-v7.0.0-rc1
we should only report as memory resources the TempMem sections from TDVF
sections.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on latest QEMU patches from branch tdx-qemu-2022.03.29-v7.0.0-rc1
we don't need EFI_RESOURCE_ATTRIBUTE_ENCRYPTED as part of the attributes
we must enable with EFI_RESOURCE_SYSTEM_MEMORY and
EFI_RESOURCE_MEMORY_RESERVED resource types.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The introduction of a error if live resizing is not possible is a
regression compared to the original behaviour where the new size would
be stored in the config and reflected in the next boot. This behaviour
was also inconsistent with the effect of resizing with no VM booted.
Instead of generating an error allow the code to go ahead and update the
config so that the new size will be available upon the reboot.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As reported by the periodic CI runs, it may take more time for the NVMe
device to present in the guest after being hotplugged as a VFIO user
device on `aarch64` (especially under high load). Let's increase the
timeout after device hotplug from `1s` to `10s` to increase the test
stability.
Fixes: #3495
Signed-off-by: Bo Chen <chen.bo@intel.com>
Similarly to the previous commit restricting the cpu resizing error only
to the situations where the vcpu amount has changed, let's do the same
with the memory and be consistent throughout our code base.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
188078467d made clear that resize should
only happen when dealing with a "dynamic" CpuManager. Although this is
very much correct, it causes a regression on Kata Containers (and on any
other consumer of Cloud Hypervisor) in cases where a resize would be
triggered but the vCPUs values wouldn't be changed.
There's no doubt Kata Containers could do better and do not call a
resize in such situations, and that's something that should **also** be
solved there. However, we should also work this around on Cloud
Hypervisor side as it introduces a regression with the current Kata
Containers code.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Extend the Hypervisor API in order to retrieve the TDX capabilities from
the underlying hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By enabling the VIRTIO feature VIRTIO_F_IOMMU_PLATFORM for all
vhost-user devices when needed, we force the guest to use the DMA API,
making these devices compatible with TDX. By using DMA API, the guest
triggers the TDX codepath to share some of the guest memory, in
particular the virtqueues and associated buffers so that the VMM and
vhost-user backends/processes can access this memory.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If EFI reset fails on the Linux kernel then it will fallthrough to CMOS
reset. Implement this as one of our reset solutions.
Fixes: #3912
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Compile this feature in by default as it's well supported on both
aarch64 and x86_64 and we only officially support using it (no non-acpi
binaries are available.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These were erroneously skipping features for the unit tests and the
"build" target for dev_cli.sh
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These are never run by the CI and is inconsistent with the way we build
test which is specified inside the .github workflows.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This includes the removal of testing without the "acpi" feature. The
command have been reordered to reduce the amount of recompilation
required.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
It seems the vdpa_sim_block isn't behaving properly after the vhost
device is closed, as it sometimes returns EBUSY when we try to open it
again. The easiest way to deal with this issue is by simplifying the
integration test, avoid to plug the same device after it's been
unplugged.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit unifies the custom linux kernel build in x86, Arm, and
performance metrics to the same function. Therefore, when bumping
the kernel version, we can make sure we only need to make the change
in one place.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
With the addition of the amx feature, add a new build workflow to
enable the feature and a clippy quality check.
Signed-off-by: William Douglas <william.douglas@intel.com>
AMX is an x86 extension adding hardware units for matrix
operations (int and float dot products). The goal of the extension is
to provide performance enhancements for these common operations.
On Linux, AMX requires requesting the permission from the kernel prior
to use. Guests wanting to make use of the feature need to have the
request made prior to starting the vm.
This change then adds the first --cpus features option amx that when
passed will enable AMX usage for guests (needs a 5.17+ kernel) or
exits with failure.
The activation is done in the CpuManager of the VMM thread as it
allows migration and snapshot/restore to work fairly painlessly for
AMX enabled workloads.
Signed-off-by: William Douglas <william.douglas@intel.com>
Now that we rely on vhost v0.4.0, which contains the fix for
get_iova_range(), we don't need the workaround anymore, and we can
actually call into the dedicated function.
Fixes#3861
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Rely on newly released versions of the vhost and vhost-user-backend
crates from rust-vmm.
The new vhost version includes the fixes needed for vDPA.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit makes sure that the custom linux kernel is always
rebuilt when running the performance metrics tests, and therefore
changes to the kernel config file is always caught.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Explain the reason why using vDPA might be interesting and how to use it
with Cloud Hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Disable the DAX feature from the virtio-fs implementation as the feature
is still not stable. The feature is deprecated, meaning the 'dax'
parameter will be removed in about 2 releases cycles.
In the meantime, the parameter value is ignored and forced to be
disabled.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The test is sporadically failing whenever we try to hotplug the vDPA
device we've just unplugged. This is causing the kernel to complain with
EBUSY because the device hasn't been released yet. This is happening
because the CI system is under very high load, therefore taking quite
some time to the host to update the state of this device.
The easy way to fix such issue is by increasing the sleep time between
the unplug and the replug.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
When running non-dynamic or with virtio-mem for hotplug the ACPI
functionality should not be included on the DSDT nor does the
MemoryManager need to be placed on the MMIO bus.
Fixes: #3883
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This is now consistent with not supplying the _CRS for the device when
CpuManager is not dynamic.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The file descriptor provided to fs_slave_map() and fs_slave_io() is
passed as a AsRawFd trait, meaning the caller owns it. For that reason,
there's no need for these functions to close the file descriptor as it
will be closed later on anyway.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As ethr is not stable on AArch64, disable it until we find other tool.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
fio test depends on hot-add disk which needs uefi on AArch64, that
will lead to lots of performance issues. So, it's better to use
cold-plug disk.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
On Arm64, the fio binary that comes from ubuntu distribution cannot
support io_uring, which is a required engine for the block
performance tests in performance metrics. Therefore this commit
build the fio from a relatively new version, and replace the native
ubuntu fio with the newly build one.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
To emulate debug I/O port on arm64, we need trap from guest to VMM.
Generally, there are 3 ways to go:
1) execute a privilege intruction like "wfi";
2) access a system register;
3) access device MMIO region;
However, 1) and 2) often handled in kvm, thus 3) it's the choice.
There maybe lots of repeated work and enlarge the size of clh to develop
a new device, so it's better to reuse the current device. Luckily, I
find that pl011 is the eariest device initialized in kernel and, there
is reserved region in it which we can reuse for emulating debug I/O.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Rather than just printing a message return an error back through the API
if the user attempts to hotplug a device that supports being behind an
IOMMU where that device isn't placed on an IOMMU segment.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Ensure devices that are specified to be on a PCI segment that is behind
the IOMMU are IOMMU enabled if possible or error out for those devices
that do not support it.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Previously it was not possible to enable vIOMMU for a virtio device.
However with the ability to place an entire PCI segment behind the
IOMMU the IOMMU mapping needs to be setup for the virtio device if it is
behind the IOMMU.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This can already be calculated by the summing the tables reported by the
Linux kernel but this is more convenient.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Changes in commit "scripts: aarch64: Reduce source code build in CI"
for the Linux kernel will lead to the kernel cannot be rebuilt if
the config file is changed. Therefore should be reverted.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
As Linux kernel, edk2, virtiofd, SPDK are all build from source, we
need to find a way to reduce the number of source code build.
To address this issue, this commit adds a stage that touching a
".built" file to each repo of the source code after a successfully
build. By checking if the ".built" file exists, we can determine
if there is already an old build. Since the source code repo will
be removed and cloned again when we bump the repo hash, the CI will
rebuild the repo.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Whenever a vfio-user device is dropped, the communication between the
VMM and the backend should be shutdown.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Separate the destruction and cleanup of original VM and the creation of
the new one. In particular have a clear hand off point for resources
(e.g. reset EventFd) used by the new VM from the original. In the
situation where vm.shutdown() generates an error this also avoids the
Vmm reference to the Vm (self.vm) from being maintained.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding two new integration tests for vDPA, relying on both block and net
simulators from the host kernel.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on the newly added Vdpa device along with the new vdpa parameter,
this patch enables the support for vDPA devices.
It's important to note this the only virtio device for which we provide
an ExternalDmaMapping instance. This will allow for the right DMA ranges
to be mapped/unmapped.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Introduce a new --vdpa parameter associated with a VdpaConfig for the
future creation of a Vdpa device.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
vDPA is a kernel framework introduced fairly recently in order to handle
devices complying with virtio specification on their datapath, while the
control path is vendor specific. For the datapath, that means the
virtqueues are handled through DMA directly between the hardware and the
guest, while the control path goes through the vDPA framework,
eventually exposed through a vhost-vdpa device.
vDPA, like VFIO, aims at achieving baremetal performance for devices
that are passed into a VM. But unlike VFIO, it provides a simpler/better
framework for achieving migration. Because the DMA accesses between the
device and the guest are going through virtio queues, migration can be
achieved way more easily, and doesn't require each device driver to
implement the migration support. In the VFIO case, each vendor is
expected to provide an implementation of the VFIO migration framework,
which makes things harder as it must be done for each and every device.
So to summarize the point is to support migration for hardware devices
through which we can achieve baremetal performances.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Update the content of the documentation to clarify how the cache option
from virtiofsd has an impact on the host page cache, while the dax
option for the filesystem in the guest has an impact on the guest page
cache.
The document is also updated to not have lines exceeding 80 characters.
Fixes#3826
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Document the reason why someone might need to use the balloon device and
detail the different parameters associated with it.
Fixes#3807
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This will significantly reduce the size of the DSDT and the effort
required to parse them if there is no requirement to support
hotplug/unplug.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
If the CpuManager is dynamic it devices CPUs can be
hotplugged/unplugged.
Since TDX does not support CPU hotplug this is currently the only
determinator as to whether the CpuManager is dynamic.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Since the code has been adapted to support VIRTIO_F_EVENT_IDX we use
Queue::needs_notification() to determine whether to signal the guest so
it is no longer necessary to check if there are any used descriptors. If
the feature is not negotiated then Queue::needs_notification() will
return true triggering an interrupt of the guest. Theoretically this
could be a spurious interrupt of the guest if there were no used used
descriptors but this is unlikely as we only generate used descriptors
for the control queue as a result of an interrupt of the VMM by the
guest.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This indicates if anything has been added to the available queue since
it was last iterated through. If it returns true then it is necessary to
iterate through the queue again otherwise it is appropriate to break out
from the loop.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
vmm.ping/vm.info will hang for PUT method, vm.create/vmm.shutdonw hang for GET method.
Because these four APIs do not write the response body when the HTTP method does not match.
Signed-off-by: LiHui <andrewli@kubesphere.io>
In case the virtio device which requires DMA mapping is placed behind a
virtual IOMMU, we shouldn't map/unmap any region manually. Instead, we
provide the DMA handler to the virtio-iommu device so that it can
trigger the proper mappings.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If a virtio device is associated with a DMA handler, the DMA mapping and
unmapping is performed from the device manager through the handler.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Given that some virtio device might need some DMA handling, we provide a
way to store this through the VirtioPciDevice layer, so that it can be
accessed when the PCI device is removed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In anticipation for handling potential DMA mapping/unmapping operations for a
virtio device, we extend the MetaVirtioDevice with an additional field
that holds an optional DMA handler.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The tuple of information related to each virtio device is too big, and
it's better to factorize it through a dedicated structure.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
With the VIRTIO_F_EVENT_IDX handling now conducted inside the
virtio-queue crate it is necessary to activate the functionality on
every queue if it is negotiatated. Otherwise this leads to a failure of
the guest to signal to the host that there is something in the available
queue as the queue's internal state has not been configured correctly.
Fixes: #3829
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When mask a msi irq, we set the entry.masked to be true, so kvm
hypervisor will not pass the gsi to kernel through KVM_SET_GSI_ROUTING
ioctl which update kvm->irq_routing. This will trigger kernel
panic on AMD platform when the gsi is the largest one in kernel
kvm->irqfds.items:
crash> bt
PID: 22218 TASK: ffff951a6ad74980 CPU: 73 COMMAND: "vcpu8"
#0 [ffffb1ba6707fa40] machine_kexec at ffffffff8565b397
#1 [ffffb1ba6707fa90] __crash_kexec at ffffffff85788a6d
#2 [ffffb1ba6707fb58] crash_kexec at ffffffff8578995d
#3 [ffffb1ba6707fb70] oops_end at ffffffff85623c0d
#4 [ffffb1ba6707fb90] no_context at ffffffff856692c9
#5 [ffffb1ba6707fbf8] exc_page_fault at ffffffff85f95b51
#6 [ffffb1ba6707fc50] asm_exc_page_fault at ffffffff86000ace
[exception RIP: svm_update_pi_irte+227]
RIP: ffffffffc0761b53 RSP: ffffb1ba6707fd08 RFLAGS: 00010086
RAX: ffffb1ba6707fd78 RBX: ffffb1ba66d91000 RCX: 0000000000000001
RDX: 00003c803f63f1c0 RSI: 000000000000019a RDI: ffffb1ba66db2ab8
RBP: 000000000000019a R8: 0000000000000040 R9: ffff94ca41b82200
R10: ffffffffffffffcf R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffffffffffcf R15: 000000000000005f
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffffb1ba6707fdb8] kvm_irq_routing_update at ffffffffc09f19a1 [kvm]
#8 [ffffb1ba6707fde0] kvm_set_irq_routing at ffffffffc09f2133 [kvm]
#9 [ffffb1ba6707fe18] kvm_vm_ioctl at ffffffffc09ef544 [kvm]
RIP: 00007f143c36488b RSP: 00007f143a4e04b8 RFLAGS: 00000246
RAX: ffffffffffffffda RBX: 00007f05780041d0 RCX: 00007f143c36488b
RDX: 00007f05780041d0 RSI: 000000004008ae6a RDI: 0000000000000020
RBP: 00000000000004e8 R8: 0000000000000008 R9: 00007f05780041e0
R10: 00007f0578004560 R11: 0000000000000246 R12: 00000000000004e0
R13: 000000000000001a R14: 00007f1424001c60 R15: 00007f0578003bc0
ORIG_RAX: 0000000000000010 CS: 0033 SS: 002b
To solve this problem, move route.disable() before set_gsi_routes() to
remove the gsi from irqfds.items first.
This problem only exists on AMD platform, 'cause on Intel platform
kernel just return when update irte while it only prints a warning on
AMD.
Also, this patch adjusts the order of enable() and set_gsi_routes() in
unmask(), which should do no harm.
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
When mask a msi irq, we set the entry.masked to be true, so kvm
hypervisor will not pass the gsi to kernel through KVM_SET_GSI_ROUTING
ioctl which update kvm->irq_routing. This will trigger kernel
panic on AMD platform when the gsi is the largest one in kernel
kvm->irqfds.items:
crash> bt
PID: 22218 TASK: ffff951a6ad74980 CPU: 73 COMMAND: "vcpu8"
#0 [ffffb1ba6707fa40] machine_kexec at ffffffff8565b397
#1 [ffffb1ba6707fa90] __crash_kexec at ffffffff85788a6d
#2 [ffffb1ba6707fb58] crash_kexec at ffffffff8578995d
#3 [ffffb1ba6707fb70] oops_end at ffffffff85623c0d
#4 [ffffb1ba6707fb90] no_context at ffffffff856692c9
#5 [ffffb1ba6707fbf8] exc_page_fault at ffffffff85f95b51
#6 [ffffb1ba6707fc50] asm_exc_page_fault at ffffffff86000ace
[exception RIP: svm_update_pi_irte+227]
RIP: ffffffffc0761b53 RSP: ffffb1ba6707fd08 RFLAGS: 00010086
RAX: ffffb1ba6707fd78 RBX: ffffb1ba66d91000 RCX: 0000000000000001
RDX: 00003c803f63f1c0 RSI: 000000000000019a RDI: ffffb1ba66db2ab8
RBP: 000000000000019a R8: 0000000000000040 R9: ffff94ca41b82200
R10: ffffffffffffffcf R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffffffffffcf R15: 000000000000005f
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffffb1ba6707fdb8] kvm_irq_routing_update at ffffffffc09f19a1 [kvm]
#8 [ffffb1ba6707fde0] kvm_set_irq_routing at ffffffffc09f2133 [kvm]
#9 [ffffb1ba6707fe18] kvm_vm_ioctl at ffffffffc09ef544 [kvm]
RIP: 00007f143c36488b RSP: 00007f143a4e04b8 RFLAGS: 00000246
RAX: ffffffffffffffda RBX: 00007f05780041d0 RCX: 00007f143c36488b
RDX: 00007f05780041d0 RSI: 000000004008ae6a RDI: 0000000000000020
RBP: 00000000000004e8 R8: 0000000000000008 R9: 00007f05780041e0
R10: 00007f0578004560 R11: 0000000000000246 R12: 00000000000004e0
R13: 000000000000001a R14: 00007f1424001c60 R15: 00007f0578003bc0
ORIG_RAX: 0000000000000010 CS: 0033 SS: 002b
To solve this problem, move route.disable() before set_gsi_routes() to
remove the gsi from irqfds.items first.
This problem only exists on AMD platform, 'cause on Intel platform
kernel just return when update irte while it only prints a warning on
AMD.
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reduce the number of open pull requests dependabot will create to avoid
excessive rebase and rebuilds of PRs. This avoids a situation with a 2nd
PR being rebased after a 1st is merged resulting in a wasteful rebuild.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Move to release version v0.2.0 for both vm-virtio and vhost-user-backend
crates rather than relying on their main branch, as they might be
subject to breaking changes.
Fixes#3800
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Replace the thread for handling SIGSYS with a simple signal handler.
This resolves inconsistent delivery of signals to the SIGSYS thread due
to other threads manipulating the signals.
Tested by removing key syscalls from vCPU and virtio device filters and
observing correct notice.
Fixes: #3811
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
To be consistently with the integration scripts, we now pass through the
`--test-filter` option of the test scripts to the `performance-metrics`
binary. Now the following two commands achieve the same results:
`$./scripts/dev_cli.sh tests --metrics -- --test-filter boot_time_ -- --test-filter latency`
`$./scripts/dev_cli.sh tests --metrics -- -- --test-filter boot_time_ --test-filter latency`
Note that, the test scripts support only single occurrence of the
`--test-filter` option while the `performance-metrics` binary allows
multiple occurrences for filtering based on different keywords.
Fixes: #3787
Signed-off-by: Bo Chen <chen.bo@intel.com>
Add a field for its length and fix up users.
Things work just because all hardcoded values agree with each other.
This is prone to breakage.
No functional change.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Needed since:
commit 0ab4097606
Author: Bo Chen <chen.bo@intel.com>
Date: Thu Feb 10 18:29:53 2022 -0800
test_infra: Enable cross-build for "musl" and "aarch64" targets
With enabling the `vendered-openssl` feature, we can now cross-build the
`test_infra` crate for "musl" and "aarch64" targets. In this way, we
can remove the `test_infra` crate from the "exclude" list, so that this
crate can be checked and processed by "cargo clippy" and "cargo fmt".
More details can be found: https://docs.rs/openssl/latest/openssl/#vendored
As 'musl-gcc' is required, this commit also installs the `musl-tools`
package for our "build" github action on the musl target [1].
[1] https://github.com/actions-rs/toolchain/issues/102
Signed-off-by: Bo Chen <chen.bo@intel.com>
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Some host kernels are IPv6-only, and they cannot make an AF_INET socket.
The tun ioctls such as SIOCGIFHWADDR work with an AF_UNIX socket, which
all host kernels should have.
Signed-off-by: Barret Rhoden <brho@google.com>
Adding the missing TARGET_CC environment variable to get the build to
complete correctly.
Fixes#3776
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
After writing to an address, Windows 11 on ARM64 unconditionally reads
it back. It is harmless. Drop the error message to avoid spamming.
Fixes: #3732
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This looks like it was copy and pasted from the network test which
required 2 vCPUs per queue pair but has since been resolved.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Using the default queue sizes provides more realistic data about what
our users are testing. Extra metrics can be added later that also
modify the queue size but overloading the existing metrics is confusing.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Don't treat it as the number of pairs. Instead calculate the number of
pairs later when necessary.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Also be clear that the block tests are in bytes per second (Bps) vs
network that is in bits per second (bps).
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The former is ambiguous as it could be considered the ordinal (and is
used elsewhere in the codebase for that).
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Many of the tests already amortize their results over a longer time
period/sample so it is not necessary to run 30 iterations.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Let's officially have a way to pass the features used to build
cloud-hypervisor to the dev_cli.sh script.
This doesn't invalidate the previous commit, as we still don't what the
features_build variable to be quoted, otherwise we face the following
issue:
```
error: Found argument '--features tdx' which wasn't expected, or isn't valid in this context
Did you mean --features?
USAGE:
cargo build --all --features <FEATURES>...
```
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
2805e7b1dc quoted enclose variables to
prevent globbing or incorrect splitting. However, by doing with with
$features_build it broke the capability to call the script as:
```
$ ./scripts/dev_cli.sh build --release --libc musl -- --features tdx
```
Before 2805e7b1dc it simply worked, after,
the result is:
```
docker run --user 1000:1000 --workdir /cloud-hypervisor --rm --volume /dev/kvm --volume /home/ffidenci/go/src/github.com/cloud-hypervisor/cloud-hypervisor:/cloud-hypervisor --env RUSTFLAGS= cloudhypervisor/dev:20220223-0 cargo build --all '' --target-dir /cloud-hypervisor/build/cargo_target --features tdx --release --target x86_64-unknown-linux-musl
error: Found argument '' which wasn't expected, or isn't valid in this context
USAGE:
cargo build --all
For more information try --help
```
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
For now only generate the boot time related tests as the full metrics
test suite needs some more time to bed in.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The dev container interface script (e.g. 'dev_cli.sh') now supports the
following arguments syntax for running tests:
`tests [--unit|--cargo|--all] [--libc musl|gnu] [-- [<test scripts args>] [-- [<test binary args>]]] `
In this way, we can pass custom arguments to the test binary (either
"cargo test" or "performance-metrics") with our dev container script.
For example:
`$ ./dev_cli.sh tests --metrics -- -- --report-file /tmp/metrics.json --test-filter latency`
`$ ./dev_cli.sh tests --integration -- --test-filter "test_serial" -- --nocapture --test-threads=1`
Fixes: #3739
Signed-off-by: Bo Chen <chen.bo@intel.com>
We don't need to install docker inside the container. Add missing
depenencies that docker was pulling in.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The same way we mask the writes coming from the guest to the message
control register related to MSI-X capability, let's do the same for MSI.
The point is to prevent the guest from writing to read-only bits.
The correct writable bits for MSI are only bits 0, 4, 5 and 6 of 2nd
16-bit word.
Those are:
* MSI Enable: 0
* Multiple Message Enable: 6-4
See "Table 7-39 Message Control Register for MSI" from
"NCB-PCI_Express_Base_5.0r1.0-2019-05-22.pdf".
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Starting from Rust 1.56 Cargo supports specifying the minimum supported
rust version (MSRV) via "rust-version". If the compiler version is not
satisfied, Cargo prints an error and exits early.
MSRV is useful information to packagers. Using this field also saves us
from adding another file to the tree.
The version is currently set to 1.54, which is tested to build Cloud
Hypervisor successfully. Although anyone who uses 1.54 will see a
warning because "rust-version" is only introduced in 1.56. The warning
can be safely ignored.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit adds event fds and the event handler to send/receive
requests and responses from the GDB thread. It also adds `--gdb` flag to
enable GDB stub feature.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds `stop_on_boot` to `Vm` so that the VM stops before
starting on boot requested. This change is required to keep the target
VM stopped before a debugger attached as the user expected.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds `Vm::debug_request` to handle `GdbRequestPayload`,
which will be sent from the GDB thread.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds initial gdb.rs implementation for `Debuggable` trait to
describe a debuggable component. Some part of the trait bound
implementations is based on the crosvm GDB stub code [1].
[1] https://github.com/google/crosvm/blob/main/src/gdb.rs
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds `KVM_SET_GUEST_DEBUG` and `KVM_TRANSLATE` ioctls to
seccomp filter to enable guest debugging without `--seccomp=false`.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds `VmState::BreakPoint` to handle hardware breakpoint.
The VM will enter this state when a breakpoint hits or a debugger
interrupts the execution.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds `VmExit::Debug` for x86/KVM. When the guest hits a
hardware breakpoint, `VcpuExit::Debug` vm exit occurs. This vm exit
will be handled with code implemented in the following commits.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit adds `translate_gva` for x86/KVM. The same name function is
already implemented for MSHV, but the implementation differs as
KVM_TRANSLATE does not take the flag argument and does not return status
code. This change requires the newer version of kvm-ioctls [1].
[1]
97ff779b6e
Signed-off-by: Akira Moroo <retrage01@gmail.com>
`translate_gva` returns mshv-specific type `hv_translate_gva_result`.
This return type is not a problem since this function is implemented
only for mshv, but we need to remove the type as the same function will
be implemented for KVM in PR #3575. This commit replaces the
mshv-specific type with `u32`.
Signed-off-by: Akira Moroo <retrage01@gmail.com>
error: writing `&mut Vec` instead of `&mut [_]` involves a new object
where a slice will do
--> virtio-devices/src/transport/pci_common_config.rs:93:17
|
93 | queues: &mut
Vec<Queue<GuestMemoryAtomic<GuestMemoryMmap>>>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: change this to: `&mut [Queue<GuestMemoryAtomic<GuestMemoryMmap>>]`
|
= note: `-D clippy::ptr-arg` implied by `-D warnings`
= help: for further information visit
https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
Signed-off-by: Akira Moroo <retrage01@gmail.com>
I incorrectly used the MSI message control register values for the mask
not the the MSI-X control registers.
The correct writable fields for MSI-X are only bits 14 and 15 of 2nd
16-bit word.
Those are:
* Function Mask: 14
* MSI-X Enable: 15
See "Table 7-47 Message Control Register for MSI-X" from
"NCB-PCI_Express_Base_5.0r1.0-2019-05-22.pdf"
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
42b5d4a2f7 has changed how the PciBdf
field of a DeviceNode is represented (from an int32 to its own struct).
To avoid marshelling / demarshelling issues for the projects relying on
the openapi auto generated code, let's propagate the change, updating
the yaml file accordingly.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
`Dies per package` setting of VCPU topology doesnot apply on AArch64.
Now we only accept `1` value. This way we can make the `dies` field
transparent, avoid it from impacting the topology setting.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
The logic of determining VCPU index in creating `cpu-map` node of FDT
can be optimized.
The code is invoked when VCPU topology is specified.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
In Flattened Device Tree (FDT) on AArch64, the VCPU topology is
represented by `cpu-map` node. The source code of creating the node
can be simplified.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
If `--local` is provided or if the version is not available then build
the container before use. This allows combining updates to the
Dockerfile with a full CI run.
Drop the "--dev" parameter as we only support one container type for
simplicity.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For vhost-user devices, we don't want to loose the vhost-user protocol
feature through the negotiation between guest and device. Since we know
VIRTIO has no knowledge of the vhost-user protocol feature, there is no
way it would ever be acknowledged by the guest. For that reason, we
create each vhost-user device with the set of acked features containing
the vhost-user protocol feature is this one was part of the available
list.
Having the set of acked features containing this bit allows for solving
a bug that was happening through the migration process since the
vhost-user protocol feature wasn't explicitely enabled.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In this way, we can cover local-migration with dpdk in our regular CI,
to prevent similar regressions reported and fixed by #3657.
Fixes: #3659
Signed-off-by: Bo Chen <chen.bo@intel.com>
Based on the helpers from the hypervisor crate, the VMM can identify
what type of hypercall has been issued through the KVM_EXIT_TDX reason.
For now, we only log warnings and set the status to INVALID_OPERAND
since these hypercalls aren't supported. The proper handling will be
implemented later.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Relying on the recent additions to the kvm-ioctls crate, this commit
implements the support for providing the exit reason details to the
caller, which allows the identification of the type of hypercall that
was issued. It also introduces a way for the consumer to set the status
code that must be sent back to the guest.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since the object returned from CpuManager.create_vcpu() is never used,
we can avoid the cloning of this object.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Rely on latest version of rust-vmm/kvm-ioctls to be able to invoke the
new method get_kvm_run() that returns a mutable reference of the kvm_run
structure.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
A new fork of the kvm-bindings crate has been submitted to the
ch-v0.5.0-tdx branch. It contains updated bindings for x86 to support
TDX.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This will allow easier transitioning between versions of the container.
A later PR will update the CI to use this new tag.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This reverts commit 98bbfa9738.
Some tests are continuing to fail even after reverting
d27316dab6. This is the only other
relevant change.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This reverts commit d27316dab6.
Jenkins testing showed up issues that didn't appear during manual
testing even after using "dev_cli.sh build-container" before running
integration tests.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Remove unused packages or more specific dependencies. In particular use
the packaged virtiofsd to avoid compiling it.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
To run unit tests correctly on musl target, We don't need to provide
specific "CFLAGS" or "TARGET_CC", as long as we use the correct build
target `*-linux-musl` with the "cargo test" command.
Signed-off-by: Bo Chen <chen.bo@intel.com>
It provides a CLI optoin to list and filter tests, e.g.:
`$ performance-metrics --test-filter boot_time --test-filter net_latency`
Signed-off-by: Bo Chen <chen.bo@intel.com>
Performance tests are expected to be executed sequentially, so we can
start VM guests with the same IP while putting them on a different
private network. The default constructor "Guest::new()" does not work
well, as we can easily create more than 256 VMs from repeating various
performance tests dozens times in a single run.
Signed-off-by: Bo Chen <chen.bo@intel.com>
In this way, we can avoid create/delete large temporary files during
every iteration of block I/O performance tests. Also, we can reuse the
'init/clean_tests()' interface in the future for other setup/cleanup.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit adds unit tests for parsing iperf3/ethr/boot_time/fio, e.g.:
`$ cargo test --package performance_metrics `
Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit creates a new binary target for generating performance metrics,
and also adds a set of performance tests for network throughput/latency,
block I/O performance, and boot time.
Signed-off-by: Bo Chen <chen.bo@intel.com>
error: unused variable: `fw_path`
--> test_infra/src/lib.rs:837:9
|
837 | fw_path: &str,
| ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fw_path`
|
= note: `-D unused-variables` implied by `-D warnings`
Signed-off-by: Bo Chen <chen.bo@intel.com>
With enabling the `vendered-openssl` feature, we can now cross-build the
`test_infra` crate for "musl" and "aarch64" targets. In this way, we
can remove the `test_infra` crate from the "exclude" list, so that this
crate can be checked and processed by "cargo clippy" and "cargo fmt".
More details can be found: https://docs.rs/openssl/latest/openssl/#vendored
As 'musl-gcc' is required, this commit also installs the `musl-tools`
package for our "build" github action on the musl target [1].
[1] https://github.com/actions-rs/toolchain/issues/102
Signed-off-by: Bo Chen <chen.bo@intel.com>
keep it as default to print out commandline when spawning guest in favor
of integration tests for debugging purpose, while allowing to disable
it when needed (e.g. for performance tests).
Signed-off-by: Bo Chen <chen.bo@intel.com>
The PCI spec specifies that only the following bits are writable:
16: MSI Enable
20,21,22: Multiple Message Enable
26: Extended Message Data Enable
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By having the DeviceNode storing a PciBdf, we simplify the internal code
as well as allow for custom Serialize/Deserialize implementation for the
PciBdf structure. These custom implementations let us display the PCI
s/b/d/f in a human readable format.
Fixes#3711
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As we've added support for cold adding devices to a VM that was created
but not already started, we should propagate the `204` response
generated on those cases to the yaml file, so openapi-generator can
produce the correct client code on the go side, to handle both `200` and
`204` successful results.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Instead of erroring out when trying to change the configuration of the
VM somewhere between the VM was created but not yet booted, let's allow
users to change that without any issue, as long as the VM has already
been created.
Fixes: #3639
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Let's add very basic unit for the vm_add_$device() functions, so we can
easily expand those when changing its behaviour in the coming commits.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Instead of doing the validation of the configuration change as part of
the vm, let's do this in the uper layer, in the Vmm.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Let's move add_to_config to config.rs so it can be used from both inside
and outside of the vm.rs file.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
The GitHub security reporting link only works for those who are
repository owners.
Fixes: #3701
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
TDx support is already present on the project for quite some time, but
the TDx configuration was not yet exposed to the ones using CH via the
OpenAPI auto generated code.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Since the devices behind the IOMMU cannot be changed at runtime we offer
the ability to place all devices on user chosen segments behind the
IOMMU. This allows the hotplugging of devices behind the IOMMU provided
that they are assigned to a segment that is located behind the iommu.
Fixes: #911
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Introducing a new integration test relying on the virtio-balloon ability
to free host pages that have been reported as freed by the guest.
This test checks that after consuming a lot of RAM in the guest, the VMM
process is able to releases the pages reported by the guest. Simply done
by checking the RSS associated with the VMM's process follows the memory
trend in the guest.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Implement the VIRTIO_BALLOON_F_REPORTING feature, indicating to the
guest it can report set of free pages. A new virtqueue dedicated for
receiving the information about the free pages is created. The VMM
releases the memory by punching holes with fallocate() if the guest
memory is backed by a file, and madvise() the host about the ranges of
memory that shouldn't be needed anymore.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding a new parameter free_page_reporting=on|off to the balloon device
so that we can enable the corresponding feature from virtio-balloon.
Running a VM with a balloon device where this feature is enabled allows
the guest to report pages that are free from guest's perspective. This
information is used by the VMM to release the corresponding pages on the
host.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Improving the existing code for better readability and in anticipation
for adding an additional virtqueue for the free page reporting feature.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
No need to run the Jenkins CI on pull request for which exclusively
markdown files have been modified.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since AZURE_CONNECTION_STRING is only useful for the Windows build,
let's remove it from other builds where it's not invoked.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding a bit of documentation and links about the TDShim and how to run
it with Cloud Hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This should not occur as ioeventfd is used for notification. Such an
error message would have made the discovery of the underlying cause of
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In order to allow for human readable output for the VM configuration, we
pull it out of the snapshot, which becomes effectively the list of
states from the VM. The configuration is stored through a dedicated file
in JSON format (not including any binary output).
Having the ability to read and modify the VM configuration manually
between the snapshot and restore phases makes debugging easier, as well
as empowers users for extending the use cases relying on the
snapshot/restore feature.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As per this kernel documentation:
For KVM_EXIT_IO, KVM_EXIT_MMIO, KVM_EXIT_OSI, KVM_EXIT_PAPR, KVM_EXIT_XEN,
KVM_EXIT_EPR, KVM_EXIT_X86_RDMSR and KVM_EXIT_X86_WRMSR the corresponding
operations are complete (and guest state is consistent) only after userspace
has re-entered the kernel with KVM_RUN. The kernel side will first finish
incomplete operations and then check for pending signals.
The pending state of the operation is not preserved in state which is
visible to userspace, thus userspace should ensure that the operation is
completed before performing a live migration. Userspace can re-enter the
guest with an unmasked signal pending or with the immediate_exit field set
to complete pending operations without allowing any further instructions
to be executed.
Since we capture the state as part of the pause and override it as part
of the resume we must ensure the state is consistent otherwise we will
lose the results of the MMIO or PIO operation that caused the exit from
which we paused.
Fixes: #3658
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Remove the bits about this feature being experimental, as well as
limitations around virtio-mem and vhost-user devices.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The patch mechanism in Cargo.toml doesn't support features to be
specified, and was leading to the following warning:
warning: patch for `kvm-bindings` uses the features mechanism.
default-features and features will not take effect because the patch
dependency does not support this mechanism
Removing the "features" parameter from the patch fixes this warning
without breaking the build.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In this way, we allows to reuse the struct `Guest` with kernel paths and
kernel commands (e.g. hardcoded constants) that are tests-specific.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Instead of using hardcoded firmware paths inside the `Guest` struct
constructor, this commit removes `fw_path` related code paths from the
`Guest` struct and asks each test constructs its firmware path
explicitly. This allows better flexibility for the `Guest` struct so
that it can be reused for the performance tests we are adding soon.
Signed-off-by: Bo Chen <chen.bo@intel.com>
If a payload is found in the TDVF section, and after it's been copied to
the guest memory, make sure to create the corresponding TdPayload
structure and insert it through the HOB.
Signed-off-by: Jiaqi Gao <jiaqi.gao@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding a new method to the TdHob structure so that we can easily insert
a HOB_PAYLOAD_INFO_TABLE into the HOB.
Signed-off-by: Jiaqi Gao <jiaqi.gao@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In case of TDX, if a kernel and/or a command line are provided by the
user, they can't be treated the same way as for the non-TDX case. That
is why this patch ensures the function load_kernel() is only invoked for
the non-TDX case.
For the TDX case, whenever TDVF contains a Payload and/or PayloadParam
sections, the file provided through --kernel and the parameters provided
through --cmdline are copied at the locations specified by each TDVF
section.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on the recent updates of the TDVF specification introducing new
types of TDVF sections, let's extend the enum in our code.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The TDVF specification has been updated with the ability to provide a
specific payload, which means we will be able to achieve direct kernel
boot.
For that reason, let's not prevent the user from using --kernel
parameter when running with TDX.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Make sure Cloud Hypervisor relies on upstream and actively maintained
vfio-ioctls crate from the rust-vmm/vfio repository instead of the
deprecated version coming from rust-vmm/vfio-ioctls repository.
Fixes#3673
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that we introduced a separate method to indicate when the migration
is started, both start_dirty_log() and stop_dirty_log() don't have to
carry an implicit meaning as they can focus entirely on the dirty log
being started or stopped.
For that reason, we can now safely move stop_dirty_log() to the code
section performing non-local migration. It makes only sense to stop
logging dirty pages if this has been started before.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to clearly decouple when the migration is started compared to
when the dirty logging is started, we introduce a new method to the
Migratable trait. This clarifies the semantics as we don't end up using
start_dirty_log() for identifying when the migration has been started.
And similarly, we rely on the already existing complete_migration()
method to know when the migration has been ended.
A bug was reported when running a local migration with a vhost-user-net
device in server mode. The reason was because the migration_started
variable was never set to "true", since the start_dirty_log() function
was never invoked.
Signed-off-by: lizhaoxin1 <Lxiaoyouling@163.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since both vhost-user-block and vhost-user-net backend now rely on the
upstream vhost-user-backend crate from rust-vmm, we can simply remove
the local version of the crate from our repository.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of relying on the local version of vhost-user-backend, this
patch allows the block backend implementation to rely on the upstream
version of the crate from rust-vmm.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since virtio-iommu is now part of the upstream Linux kernel, the main
reason for having our own Linux kernel fork is to carry the patches for
virtio-watchdog support.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we moved to the CloudHvX64 target from EDK2, we can't use the same
OVMF firmware for both Cloud Hypervisor and QEMU. The documentation
needed some updates.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of relying on the local version of vhost-user-backend, this
patch allows the block backend implementation to rely on the upstream
version of the crate from rust-vmm.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The Linux Foundation have recommended the use of the this license for
documentation so this change included the license in the documentation
directory.
The file "networking.md" was remove as the copyright holder did not give
their consent.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
While cloud-hypervisor does support receiving the file descriptors of a
tuntap device, advertising the fds structure via the openAPI can lead to
misinterpretations of what can and what should be done.
An unadvertised consumer will think that they could rather just set the
file descriptors there directly, or even pass them as a byte array.
However, the proper way to go in those cases would be actually sending
those via send_msg(), together with the request.
As hacking the openAPI auto-generated code to properly do this is not
*that* trivial, and as doing so during a `create VM` request is not
supported, we better not advertising those.
Please, for more details, also check:
https://github.com/cloud-hypervisor/cloud-hypervisor/pull/3607#issuecomment-1020935523
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Now that all the preliminary work has been merged to make Cloud
Hypervisor work with the upstream crate virtio-queue from
rust-vmm/vm-virtio repository, we can move the whole codebase and remove
the local copy of the virtio-queue crate.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that multiple file descriptors can be provided along with add-net,
that means we can hotplug a multiqueue macvtap interface to the VM.
The common macvtap test is updated, meaning that both coldplug and
hotplug codepath now use multiqueue.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on the latest code from the micro-http crate, this patch adds the
support for multiple file descriptors to be sent along with the add-net
request. This means we can now hotplug multiqueue network interface to
the VM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This new trait simplifies the address translation of a GuestAddress by
having GuestAddress implementing it.
The three crates virtio-devices, block_util and net_util have been
updated accordingly to rely on this new trait, helping with code
readability and limiting the amount of duplicated code.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Descriptor addresses are now translated from the virtio devices directly
and the definition of the AccessPlatform trait has been moved to
vm-virtio crate. For these reasons, the virtio-queue crate can be
simplified, which makes it very close to the upstream version.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Moving the whole codebase to rely on the AccessPlatform definition from
vm-virtio so that we can fully remove it from virtio-queue crate.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Moving away from the virtio-queue mechanism for descriptor address
translation. Instead, we enable the new mechanism added to every
VirtioDevice implementation, by setting the AccessPlatform trait if one
can be found.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we're trying to move away from the translation happening in the
virtio-queue crate, the device itself is performing the address
translation when needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we're trying to move away from the translation happening in the
virtio-queue crate, the device itself is performing the address
translation when needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we're trying to move away from the translation happening in the
virtio-queue crate, the device itself is performing the address
translation when needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we're trying to move away from the translation happening in the
virtio-queue crate, the device itself is performing the address
translation when needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we're trying to move away from the translation happening in the
virtio-queue crate, the device itself is performing the address
translation when needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we're trying to move away from the translation happening in the
virtio-queue crate, the device itself is performing the address
translation when needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add a new method set_access_platform() to the VirtioDevice trait in
order to allow an AccessPlatform trait to be setup on any virtio device.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that the virtio-devices crate can take care of the queue addresses
when placed behind a vIOMMU, we can remove the corresponding code.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Upon the enablement of the queue by the guest, we perform a translation
of the descriptor table, the available ring and used ring addresses
prior to enabling the device itself. This only applies to the case where
the device is placed behind a vIOMMU, which is the reason why the
translation is needed. Indeed, the addresses allocated by the guest are
IOVAs which must be translated into GPAs before we can access the queue.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of relying on the virtio-queue crate to store the information
about the MSI-X vectors for each queue, we handle this directly from the
PCI transport layer.
This is the first step in getting closer to the upstream version of
virtio-queue so that we can eventually move fully to the upstream
version.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
When freeing memory sometimes glibc will attempt to read
"/proc/sys/vm/overcommit_memory" to find out how it should release the
blocks. This happens sporadically with Cloud Hypervisor but has been
seen in use. It is not necessary to add the read() syscall to the list
as it is already included in the virtio devices common set. Similarly
the vCPU and vmm threads already have both these in the allowed list.
Fixes: #3609
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add integration tests for "pmu=on". It depends on checking if there
is "arm-pmu" item in "/proc/interrupts". As PMU info has not been added
to ACPI, the tests are only for dt.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
If a PMU is enabled in a VM, we also need to initialize the PMU
when the VM is restored. Otherwise, vCPUs cannot be started after
the VM is restored.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
When enable PMU on arm64, ioctl with group KVM_HAS_DEVICE_ATTR will be
blocked by seccomp, add it to authorized list.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Like devicefd, vcpufd also has ability to set/has attribute through kvm
ioctl. These traits are used when enable PMU on arm64, so add it here.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
As it might take more time for the VM to boot (especially under high
load) when using the firmware, let's increase the timeout waiting for
the VM to be reachable.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Relying on helpers for creating the ACPI tables and to add each table to
the HOB, this patch connects the dot to provide the set of ACPI tables
to the TD firmware.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding a new method to the TdHob structure so that we can easily insert
a ACPI_TABLE_HOB into the HOB.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The way to create ACPI tables for TDX is different as each table must be
passed through the HOB. This means the XSDT table is not required since
the firmware will take care of creating it. Same for RSDP, this is
firmware responsibility to provide it to the guest.
That's why this patch creates a TDX dedicated function, returning a list
of Sdt objects, which will let the calling code copy the content of each
table through the HOB.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In case of TDX, we don't want to create the ACPI tables the same way we
do for all the other use cases. That's because the ACPI tables don't
need to be written to guest memory at a specific address, instead they
are passed directly through the HOB.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
It's been decided the ACPI tables will be passed to the firmware in a
different way, rather than using TD_VMM_DATA. Since TD_VMM_DATA was
introduced for this purpose, there's no reason to keep it in our
codebase.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Both OVMF and RHF firmwares triggered an error when O_DIRECT was used
because they didn't align the buffers to the block sector size.
In order to prevent regressions, we're adding a new test validating the
VM can properly boot when the OS disk is opened with O_DIRECT and booted
from the rust-hypervisor-fw.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Whenever the backing file of our virtio-block device is opened with
O_DIRECT, there's a requirement about the buffer address and size to be
aligned to the sector size.
We know virtio-block requests are sector aligned in terms of size, but
we must still check if the buffer address is. In case it's not, we
create an intermediate buffer that will be passed through the system
call. In case of a write operation, the content of the non-aligned
buffer must be copied beforehand, and in case of a read operation, the
content of the aligned buffer must be copied to the non-aligned one
after the operation has been completed.
Fixes#3587
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This table is listed as required in the ARM Base Boot Requirements
document. The particular need arises to make the serial debugging of
Windows guest functional.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
If the guest hasn't initialised a PV clock then the KVM_KVMCLOCK_CTRL
ioctl will return -EINVAL. Therefore if running in the firmware or an OS
that doesn't use the PV clock then we should ignore that error
Tested by migrating a VM that has not yet booted into the Linux kernel
(just in firmware) by specifying no disk image:
e.g. target/debug/cloud-hypervisor --kernel ~/workloads/hypervisor-fw --api-socket /tmp/api --serial tty --console off
Fixes: #3586
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
From 15358ef79d: Device Mapper Multipath
config can avoid systemd errors related to Device Mapper multipath while
guest booting.
From 46672c384c: CONFIG_NVME_MULTIPATH is
needed to fix the observed guest hanging issue cased by systemd crash
while booting.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The SPDK-NVMe is needed for the integration test for vfio_user.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Signed-off-by: Bo Chen <chen.bo@intel.com>
AArch64 does not use IOBAR, and current code of panics the whole VMM if
we need to allocate the IOBAR.
This commit checks if IOBAR is enabled before the arch conditional code
of IOBAR allocation and if the IOBAR is not enabled, we can just skip
the IOBAR allocation and do nothing.
Fixes: https://github.com/cloud-hypervisor/cloud-hypervisor/issues/3479
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Ensure all pending virtio activations (as triggered by MMIO write on the
vCPU threads leading to a barrier wait) are completed before pausing the
vCPUs as otherwise there will a deadlock with the VMM waiting for the
vCPU to acknowledge it's pause and the vCPU waiting for the VMM to
activate the device and release the barrier.
Fixes: #3585
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The code can be written in a better form and the clippy warning
suppression can be dropped.
No functional change.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
These are the leftovers from the commit 8155be2:
arch: aarch64: vm_memory is not required when configuring vcpu
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Update documentation and CI to rely on the new CLOUDHV.fd firmware built
from the newly introduced target CloudHvX64.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By pinning the OVMF version, we will be able to update the EDK2 fork
with a new version without potentially breaking our Cloud Hypervisor CI.
Once the new version is ready on the EDK2 fork, we'll be able to update
Cloud Hypervisor codebase, replacing the fixed version with the latest,
as well as replacing OVMF.fd with CLOUDHV.fd. This is because we'll
start building from the new target CloudHvX64.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
When in local migration mode send the FDs for the guest memory over the
socket along with the slot that the FD is associated with. This removes
the requirement for copying the guest RAM and gives significantly faster
live migration performance (of the order of 3s to 60ms).
Fixes: #3566
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Create the VM using the FDs (wrapped in Files) that have been received
during the migration process.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
If this FD (wrapped in a File) is supplied when the RAM region is being
created use that over creating a new one.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This function is used to open an FD (wrapped in a File) that points to
guest memory from memfd_create() or backed on the filesystem.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Currently cloud-hypervisor supports hotplug of CPUs, passthrough devices, virtio devices and memory resizing,
but in hotplug.md it still mentiones: "Currently Cloud Hypervisor only supports hot plugging of CPU devices."
We need to remove the incorrect information from hotplug.md to reflect the true situation.
Fixes: #3504
Signed-off-by: Liang Zhou <zhoul110@chinatelecom.cn>
Drop the unused parameter throughout the code base.
Also take the chance to drop a needless clone.
No functional change intended.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
error: unneeded late initalization
Error: --> devices/src/legacy/rtc_pl031.rs:294:9
|
294 | let v;
| ^^^^^^
|
= note: `-D clippy::needless-late-init` implied by `-D warnings`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `v` here
|
297 | let v = if (AMBA_ID_LOW..AMBA_ID_HIGH).contains(&offset) {
| +++++++
help: remove the assignments from the branches
|
299 ~ u32::from(PL031_ID[index])
300 | } else {
301 ~ match offset {
302 | RTCDR => self.get_time(),
303 | RTCMR => {
304 | // Even though we are not implementing RTC alarm we return the last value
...
help: add a semicolon after the `if` expression
|
317 | };
| +
error: unneeded late initalization
Error: --> devices/src/legacy/uart_pl011.rs:297:9
|
297 | let v;
| ^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `v` here
|
299 | let v = if (AMBA_ID_LOW..AMBA_ID_HIGH).contains(&(offset >> 2)) {
| +++++++
help: remove the assignments from the branches
|
301 ~ u32::from(PL011_ID[index])
302 | } else {
303 ~ match offset >> 2 {
304 | UARTDR => {
305 | let c: u32;
306 | let r: u32;
...
help: add a semicolon after the `if` expression
|
340 | };
| +
error: unneeded late initalization
Error: --> devices/src/legacy/uart_pl011.rs:305:21
|
305 | let c: u32;
| ^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `c` here
|
309 | let c: u32 = self.read_fifo.pop_front().unwrap_or_default().into();
| ~~~~~~~~~~
error: unneeded late initalization
Error: --> devices/src/legacy/uart_pl011.rs:306:21
|
306 | let r: u32;
| ^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `r` here
|
320 | let r: u32 = c;
| ~~~~~~~~~~
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
error: this boolean expression can be simplified
--> tests/integration.rs:3755:33
|
3755 | assert!(!(empty > 5), "No login on pty");
| ^^^^^^^^^^^^ help: try: `empty <= 5`
|
= note: `-D clippy::nonminimal-bool` implied by `-D warnings`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
error: unneeded late initalization
--> tests/integration.rs:7619:13
|
7619 | let mut success;
| ^^^^^^^^^^^^^^^^
|
= note: `-D clippy::needless-late-init` implied by `-D warnings`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `success` here
|
7621 | let mut success = if let Some(status) = send_migration
| +++++++++++++++++
help: remove the assignments from the branches
|
7625 ~ status.success()
7626 | } else {
7627 ~ false
|
help: add a semicolon after the `if` expression
|
7628 | };
| +
error: unneeded late initalization
--> tests/integration.rs:7838:13
|
7838 | let mut success;
| ^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `success` here
|
7840 | let mut success = if let Some(status) = send_migration
| +++++++++++++++++
help: remove the assignments from the branches
|
7844 ~ status.success()
7845 | } else {
7846 ~ false
|
help: add a semicolon after the `if` expression
|
7847 | };
| +
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
error: unneeded late initalization
Error: --> arch/src/aarch64/gic/gicv3_its.rs:127:9
|
127 | let attr: u64;
| ^^^^^^^^^^^^^^
|
= note: `-D clippy::needless-late-init` implied by `-D warnings`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `attr` here
|
128 | let attr: u64 = if save {
| +++++++++++++++
help: remove the assignments from the branches
|
129 ~ u64::from(kvm_bindings::KVM_DEV_ARM_ITS_SAVE_TABLES)
130 | } else {
131 ~ u64::from(kvm_bindings::KVM_DEV_ARM_ITS_RESTORE_TABLES)
|
help: add a semicolon after the `if` expression
|
132 | };
| +
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
We've been currently using "fd" as the field name, but it should be
called "fds" since 6664e5a6e7 introduced
the name change on the structure field.
Fixes: #3560
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Passing no boot related parameters (e.g. no --kernel) is used for e.g.
receiving a live migration or an API based boot.
marvin:~/src/cloud-hypervisor (2022-01-11-live-migration-with-fds *)$ target/debug/cloud-hypervisor --api-socket /tmp/api2
thread 'main' panicked at '`tdx` is not a name of an argument or a group.
Make sure you're using the name of the argument itself and not the name of short or long flags.', /home/rob/.cargo/registry/src/github.com-1ecc6299db9ec823/clap-3.0.6/src/parse/matches/arg_matches.rs:598:14
stack backtrace:
0: rust_begin_unwind
at /rustc/7d6f948173ccb18822bab13d548c65632db5f0aa/library/std/src/panicking.rs:498:5
1: core::panicking::panic_fmt
at /rustc/7d6f948173ccb18822bab13d548c65632db5f0aa/library/core/src/panicking.rs:107:14
2: clap::parse::matches::arg_matches::ArgMatches::get_arg
at /home/rob/.cargo/registry/src/github.com-1ecc6299db9ec823/clap-3.0.6/src/parse/matches/arg_matches.rs:1052:17
3: clap::parse::matches::arg_matches::ArgMatches::is_present
at /home/rob/.cargo/registry/src/github.com-1ecc6299db9ec823/clap-3.0.6/src/parse/matches/arg_matches.rs:598:9
4: cloud_hypervisor::start_vmm
at ./src/main.rs:530:46
5: cloud_hypervisor::main
at ./src/main.rs:566:27
6: core::ops::function::FnOnce::call_once
at /rustc/7d6f948173ccb18822bab13d548c65632db5f0aa/library/core/src/ops/function.rs:227:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
`tap` has its default value set to `None`, but in the openapi yaml file
we've been setting it to `""`.
When using this code on the Kata Containers side we'd be hit by a non
expected behaviour of cloud-hypervisor, as even when using a different
method to initialise the `tuntap` device the code would be treated as if
using `--net tap` (which is a valid use-case).
Related: #3554
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
When enabling the `mshv` feature, we skip quite some tests and
hence have known dead-code. This annotation silences dead-code
related warnings for our quality workflow to pass.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Given integration tests don't have special annotations, all our
integration test scripts do not need to carry special flags when running
`cargo test`. This commit also removed the "test::" prefix for
pattern-matching different set of integration tests.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Given integration tests are placed in a dedicate directory, they don't
need annotations (e.g. `#[cfg(integration_test)]` and `#[cfg(test)]`) or
defining `test mod` to exclude themselves from the common compilation
process.
Signed-off-by: Bo Chen <chen.bo@intel.com>
warning: unneeded late initalization
--> src/main.rs:134:5
|
134 | let mut app: App;
| ^^^^^^^^^^^^^^^^^
|
= note: `#[warn(clippy::needless_late_init)]` on by default
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `app` here
|
138 | let mut app: App = App::new("cloud-hypervisor")
| ~~~~~~~~~~~~~~~~
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
warning: unneeded late initalization
--> vmm/src/acpi.rs:525:5
|
525 | let mut prev_tbl_len: u64;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(clippy::needless_late_init)]` on by default
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `prev_tbl_len` here
|
552 | let mut prev_tbl_len: u64 = madt.len() as u64;
| ~~~~~~~~~~~~~~~~~~~~~~~~~
warning: unneeded late initalization
--> vmm/src/acpi.rs:526:5
|
526 | let mut prev_tbl_off: GuestAddress;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `prev_tbl_off` here
|
553 | let mut prev_tbl_off: GuestAddress = madt_offset;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
warning: unneeded late initalization
--> virtio-queue/src/chain.rs:381:13
|
381 | let desc: Descriptor;
| ^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(clippy::needless_late_init)]` on by default
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `desc` here
|
382 | let desc: Descriptor = if i < 3 {
| ++++++++++++++++++++++
help: remove the assignments from the branches
|
383 ~ Descriptor::new(0x1000 * i as u64, 0x1000, VIRTQ_DESC_F_NEXT, i + 1)
384 | } else {
385 ~ Descriptor::new(0x1000 * i as u64, 0x1000, 0, 0)
|
help: add a semicolon after the `if` expression
|
386 | };
| +
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Current command to run cloud-hypervisor binary has
wrong --rng argument in the README file.
This commit fixes all the references of --rng argument
by removing the --rng option to use default.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This crate contains up to date definition of the Queue, AvailIter,
DescriptorChain and Descriptor structures forked from the upstream
crate rust-vmm/vm-virtio 27b18af01ee2d9564626e084a758a2b496d2c618.
The following patches have been applied on top of this base in order to
make it work correctly with Cloud Hypervisor requirements:
- Add MSI vector field to the Queue
In order to help with MSI/MSI-X support, it is convenient to store the
value of the interrupt vector inside the Queue directly.
- Handle address translations
For devices with access to data in memory being translated, we add to
the Queue the ability to translate the address stored in the
descriptor.
It is very helpful as it performs the translation right after the
untranslated address is read from memory, avoiding any errors from
happening from the consumer's crate perspective. It also allows the
consumer to reduce greatly the amount of duplicated code for applying
the translation in many different places.
- Add helpers for Queue structure
They are meant to help crate's consumers getting/setting information
about the Queue.
These patches can be found on the 'ch' branch from the Cloud Hypervisor
fork: https://github.com/cloud-hypervisor/vm-virtio.git
This patch takes care of updating the Cloud Hypervisor code in
virtio-devices and vm-virtio to build correctly with the latest version
of virtio-queue.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This crate was used in the integration tests to allow the tests to
continue and clean up after a failure. This isn't necessary in the unit
tests and adds a large build dependency chain including an unmaintained
crate.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This updated tree now includes a fix for virtio-net regression that was
present in 5.14:
commit 732b74d647048668f0f8dc0c848f0746c69e2e2f
Author: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: Sat Oct 9 05:17:53 2021 -0400
virtio-net: fix for skb_over_panic inside big mode
commit 126285651b7f ("Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net")
accidentally reverted the effect of
commit 1a8024239da ("virtio-net: fix for skb_over_panic inside big mode")
on drivers/net/virtio_net.c
As a result, users of crosvm (which is using large packet mode)
are experiencing crashes with 5.14-rc1 and above that do not
occur with 5.13.
Crash trace:
[ 61.346677] skbuff: skb_over_panic: text:ffffffff881ae2c7 len:3762 put:3762 head:ffff8a5ec8c22000 data:ffff8a5ec8c22010 tail:0xec2 end:0xec0 dev:<NULL>
[ 61.369192] kernel BUG at net/core/skbuff.c:111!
[ 61.372840] invalid opcode: 0000 [#1] SMP PTI
[ 61.374892] CPU: 5 PID: 0 Comm: swapper/5 Not tainted 5.14.0-rc1 linux-v5.14-rc1-for-mesa-ci.tar.bz2 #1
[ 61.376450] Hardware name: ChromiumOS crosvm, BIOS 0
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When forwarding an epoll event from the unix muxer to the
targeted connection event handler, the eventset the connection
registered is forwarded instead of the actual epoll
operation (IN/OUT).
For example, if the connection was registered for EPOLLIN,
and receives an EPOLLOUT, the connection will actually handle
an EPOLLOUT.
This is the root cause of previous bug, which caused the
introduction of some workarounds (i.e: handling ewouldblock
when reading after receiving EPOLLIN, which should never happen).
When matching the connection, we retrieve and use the evset of
the connection instead of the one passed as a parameter.
The compiler does not complain for an unused variable because
it was first logged in a debug! statement.
This is an unfortunate naming mistake that caused a lot of problems.
Fixes#3497
Signed-off-by: Eduard Kyvenko <eduard.kyvenko@gmail.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If the underlying kernel is old PTY resize is disabled and this is
represented by the use of None in the provided Option<File> type. In the
virtio-console PTY path don't blindly unwrap() the value that will be
preserved across a reboot.
Fixes: #3496
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The test test_virtio_block_topology is flaky on aarch64, let's disable
it until we find the right way to fix it.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There is a corner case of using the Cloud Hypervisor on AArch64:
If the VM is started on a device where RAM is limited, and if the user
allocates nearly as much memory for the guest as is still free on the
host, we need to enable the swap memory.
This commit documented this corner case with explanation.
Also, this commit corrects the hardware requirement of the GIC interrupt
controller for running the Cloud Hypervisor on AArch64, accroding to
[1].
Fixes: https://github.com/cloud-hypervisor/cloud-hypervisor/issues/3419
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
[1] https://www.kernel.org/doc/html/latest/virt/kvm/devices/arm-vgic-its.html
It's important to maintain the ability to run in a non-TDX environment
a Cloud Hypervisor binary with the 'tdx' feature enabled.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This test relies on using losetup with a block size to create a block
device from a file that has a specific block size for the topology
detection code to pick up and passthrough to the guest.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
If the disk is backed by a block device on the host a non-default
topology will be available and that topology can be advertised by virtio
block.
Fixes: #3262
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For simplicity this trait implements a default version that has a
topology with 512 byte (i.e. sector) recommended sizes.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Setting up the SIGWINCH handler requires at least Linux 5.7. However
this functionality is not required for basic PTY operation.
Fixes: #3456
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This reverts commit 58d25b3ccc.
This change introduced a regression when running iperf with the guest
running as the server:
marvin:~/src/cloud-hypervisor ((58d25b3c...))$ iperf -c 192.168.249.2
------------------------------------------------------------
Client connecting to 192.168.249.2, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 1] local 192.168.249.1 port 47078 connected with 192.168.249.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 1] 0.00-10.40 sec 14.0 MBytes 11.3 Mbits/sec
marvin:~/src/cloud-hypervisor ((58d25b3c...))$ iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 128 KByte (default)
------------------------------------------------------------
[ 1] local 192.168.249.1 port 5001 connected with 192.168.249.2 port 42866
[ ID] Interval Transfer Bandwidth
[ 1] 0.00-10.01 sec 51.2 GBytes 44.0 Gbits/sec
Fixes: #3450
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The sendmsg() syscall is limited in the number of fds it can handle.
This number matches that used by the vfio-user library and is
conservative (since we've seen it work with 64 fds.)
Fixes: #3401
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This time we use the Rust Hypervisor Firmware for test_vfio_user() in
order to fix the systemd issues we've seen so far.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Advertise the PCI MMIO config spaces here so that the MMIO config space
is correctly recognised.
Tested by: --platform num_pci_segments=1 or 16 hotplug NVMe vfio-user device
works correctly with hypervisor-fw & OVMF and direct kernel boot.
Fixes: #3432
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When restoring replace the internal value of the device tree rather than
replacing the Arc<Mutex<DeviceTree>> itself. This is fixes an issue
where the AddressManager has a copy of the the original
Arc<Mutex<DeviceTree>> from when the DeviceManager was created. The
original restore path only replaced the DeviceManager's version of the
Arc<Mutex<DeviceTree>>. Instead replace the contents of the
Arc<Mutex<DeviceTree>> so all users see the updated version.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The observation is that the code in question was used to bridge
synchronized and asynchronized code.
We can group the functions for that purpose under an adaptor trait. To
limit the scope of locking, the users of the trait are required to
implement a method to return a MutexGuard for the underlying file.
This then allows us to use concrete types (QcowFile and Vhdx) in code,
which is easier to read than a bunch of traits.
No functional change intended.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Saving the KVM clock and restoring it is key for correct behaviour of
the VM when doing snapshot/restore or live migration. The clock is
restored to the KVM state as part of the Vm::resume() method prior to
that it must be extracted from the state object and stored for later use
by this method. This change simplifies the extraction and storage part
so that it is done in the same way for both snapshot/restore and live
migration.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit enhances the integration test for multiple PCI segments
by:
(1) Enables the `test_virtio_fs_multi_segment` on AArch64.
(2) Adds a new integration test case for both x86_64 and AArch64 using
the direct kernel boot to test virtio-disk multiple PCI segments.
The test case does:
- Start a VM using direct kernel boot with 16 PCI segments and assign
the last PCI segment with a virtio-disk device.
- Check if the number of PCI host bridges equals to 16 after VM boots.
- Mount the virtio-disk device on the last PCI segment to the rootfs
and write/read data to the virtio-disk device.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Each PCI device under a root complex is uniquely identified by its
Requester ID (AKA RID). A Requester ID is a triplet of a Bus number,
Device number, and Function number.
MSIs may be distinguished in part through the use of sideband data
accompanying writes. In the case of PCI devices, this sideband data
may be derived from the Requester ID. A mechanism is required to
associate a device with both the MSI controllers it can address,
and the sideband data that will be associated with its writes to
those controllers.
This commit adds the `msi-map` property for PCI nodes, therefore
creating MSI mapping for each PCI device.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit rewrites the `create_pci_node` in the FDT creator to
create multiple PCI nodes based on the vector of `PciSpaceInfo`,
and each PCI node in FDT reflects a PCI segment.
- The PCI MMIO config space, 32 bits PCI device space and 64 bits
PCI device space is re-calculated based on the `PciSpaceInfo` for
each PCI segment.
- A new FDT property `linux,pci-domain` is added.
- The virtio-iommu node is only created for the first PCI segment.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The constant `PCI_MMIO_CONFIG_SIZE` defined in `vmm/pci_segment.rs`
describes the MMIO configuation size for each PCI segment. However,
this name conflicts with the `PCI_MMCONFIG_SIZE` defined in `layout.rs`
in the `arch` crate, which describes the memory size of the PCI MMIO
configuration region.
Therefore, this commit renames the `PCI_MMIO_CONFIG_SIZE` to
`PCI_MMIO_CONFIG_SIZE_PER_SEGMENT` and moves this constant from `vmm`
crate to `arch` crate.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Currently, a tuple containing PCI space start address and PCI space
size is used to pass the PCI space information to the FDT creator.
In order to support the multiple PCI segment for FDT, more information
such as the PCI segment ID should be passed to the FDT creator. If we
still use a tuple to store these information, the code flexibility and
readablity will be harmed.
To address this issue, this commit replaces the tuple containing the
PCI space information to a structure `PciSpaceInfo` and uses a vector
of `PciSpaceInfo` to store PCI space information for each segment, so
that multiple PCI segment information can be passed to the FDT together.
Note that the scope of this commit will only contain the refactor of
original code, the actual multiple PCI segments support will be in
following series, and for now `--platform num_pci_segments` should only
be 1.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Previously mutex (semaphore) and file were separated. The code needed to
create artificial scopes to use mutex to protect file.
Rewrite the code to be idiomatic. The file itself is turned into a trait
object and placed inside the mutex. This requires providing a new
ReadWriteSeekFile trait to unify all helper functions.
The rewrite further simplified vhdx_sync code. The original code
contained two mutex'es for no apparent reason.
No functional change intended.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Extending the test_simple_launch() integration test to validate Cloud
Hypervisor boots correctly with both rust-hypervisor-fw and OVMF on
x86_64 platforms.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Bumping the OVMF binary version along with UEFI documentation to
reflect the latest set of patches on top of tianocore/edk2 'master'
branch, which can be found on the Cloud Hypervisor fork on 'ch' branch.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to avoid the identity map region to conflict with a possible
firmware being placed in the last 4MiB of the 4GiB range, we must set
the address to a chosen location. And it makes the most sense to have
this region placed right after the TSS region.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extending the Vm trait with set_identity_map_address() in order to
expose this ioctl to the VMM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Commit ac25172176 bumps the rust
version of virtiofsd named `virtiofsd-rs`, which causes a warning
```
warning: use of deprecated parameter '--socket':
Please use the '--socket-path' option instead.
```
This commit updates the cmdline parameter accordingly.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Place the 3 page TSS at an explicit location in the 32-bit address space
to avoid conflicting with the loaded raw firmware.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Reduce the size of the reserved 32-bit address space to the range used
by both the PCI MMIO config data and the 32-bit PCI device space.
This avoids issues when using firmware that is loaded into the very top
of the 32-bit address space as the RAM conflicts with the reserved
memory.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Current `Getting Started` section only contains steps for the x86_64
platform, as we have a documentation doing the same thing for AArch64,
we can point users to the correct documentation.
Also, this commit modifies the `docs/arm64.md` to fit the documentation
style within the project.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This test is flaky (#3400) while we are experiencing a bug of using the latest
SPDK/NVMe backend as VFIO user device (#3401). Let's disable this test
before we fix the above two issues.
Signed-off-by: Bo Chen <chen.bo@intel.com>
For now we only enable the vfio-user test on x86_64 platform, as we have
a known hanging issue to resovle on the aarch64 platform.
Fixes: #3098
Signed-off-by: Bo Chen <chen.bo@intel.com>
Enabling these configs can avoid systemd errors related to Device Mapper
multipath while guest booting. Especially, the guest can hang when being
used with an NVMe backend without these configs (#3352).
Signed-off-by: Bo Chen <chen.bo@intel.com>
This kernel config is needed to fix the observed guest hanging issue
cased by systemd crash while booting.
Fixes: #3352
Signed-off-by: Bo Chen <chen.bo@intel.com>
Added fields:
- `Memory address size limit`: the missing of this field triggered
warnings in guest kernel
- `Node ID`
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
After introducing multiple PCI segments, the `devid` value in
`kvm_irq_routing_entry` exceeds the maximum supported range on AArch64.
This commit restructed the `devid` to the allowed range.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
The register D has only one bit that is not reserved, and its purpose is
to report if the RTC/CMOS device is powered or not.
The OVMF firmware was failing to boot as it was getting the information
that the device was powered off from the register D.
The simple way to fix this issue is by always returning the bit 7 from
register D as 1, indicating the device is always powered.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If the provided binary isn't an ELF binary assume that it is a firmware
to be loaded in directly. In this case we shouldn't program any of the
registers as KVM starts in that state.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Function alloc_zeroed can fail. Check its return in read and write
functions. Its return value in is_valid_alignment is not checked because
handling error in that case does not give us much benefit. Instead, an
assertion is added.
Add safety comments to all `unsafe`s.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Simple aggregate types are Sync by default. There is no need to use
`impl Sync` for MockVmm (a simple struct).
Signed-off-by: Wei Liu <liuwe@microsoft.com>
That function call can return -1 when it fails. Wrapping -1 into File
causes the code to panic when the File is dropped.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
I encountered some trouble trying to use a virtio-console hooked up to
a PTY. Reading from the PTY would produce stuff like this
"\n\nsh-5.1# \n\nsh-5.1# " (where I'm just pressing enter at a shell
prompt), and a terminal would render that like this:
----------------------------------------------------------------
sh-5.1#
sh-5.1#
----------------------------------------------------------------
This was because we weren't disabling the ICRNL termios iflag, which
turns carriage returns (\r) into line feeds (\n). Other raw mode
implementations (like QEMU's) set this flag, and don't have this
problem.
Instead of fixing our raw mode implementation to just disable ICRNL,
or copy the flags from QEMU's, though, here I've changed it to use the
raw mode implementation in libc. It seems to work correctly in my
testing, and means we don't have to worry about what exactly raw mode
looks like under the hood any more.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Creating some brief documentation for TDX, summarizing the links on
where to find more information about TDX, as well as how to run Cloud
Hypervisor on it.
Fixes#3318
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Fix seccomp violation when trying to add the out FD to the epoll loop
when the serial buffer needs to be flushed.
0x00007ffff7dc093e in epoll_ctl () at ../sysdeps/unix/syscall-template.S:120
0x0000555555db9b6d in epoll::ctl (epfd=56, op=epoll::ControlOptions::EPOLL_CTL_MOD, fd=55, event=...)
at /home/rob/.cargo/registry/src/github.com-1ecc6299db9ec823/epoll-4.3.1/src/lib.rs:155
0x00005555556f5127 in vmm::serial_buffer::SerialBuffer::add_out_poll (self=0x7fffe800b5d0) at vmm/src/serial_buffer.rs:101
0x00005555556f583d in vmm::serial_buffer::{impl#1}::write (self=0x7fffe800b5d0, buf=...) at vmm/src/serial_buffer.rs:139
0x0000555555a30b10 in std::io::Write::write_all<vmm::serial_buffer::SerialBuffer> (self=0x7fffe800b5d0, buf=...)
at /rustc/59eed8a2aac0230a8b53e89d4e99d55912ba6b35/library/std/src/io/mod.rs:1527
0x0000555555ab82fb in devices::legacy::serial::Serial::handle_write (self=0x7fffe800b520, offset=0, v=13) at devices/src/legacy/serial.rs:217
0x0000555555ab897f in devices::legacy::serial::{impl#2}::write (self=0x7fffe800b520, _base=1016, offset=0, data=...) at devices/src/legacy/serial.rs:295
0x0000555555f30e95 in vm_device::bus::Bus::write (self=0x7fffe8006ce0, addr=1016, data=...) at vm-device/src/bus.rs:235
0x00005555559406d4 in vmm::vm::{impl#4}::pio_write (self=0x7fffe8009640, port=1016, data=...) at vmm/src/vm.rs:459
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When running with `--serial pty --console pty --seccomp=false` the
SIGWICH listener thread would panic as the seccomp filter was empty.
Adopt the mechanism used in the rest of the code and check for non-empty
filter before trying to apply it.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This test generates an array of random numbers and then applies the same
trivial algorithm twice -- once in set_apic_delivery_mode and another
time in an anonymous function.
Its usefulness is limited. Drop it to remove one unsafe in code.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Fixing a few inconsistencies and extending the document to tackle
multiple devices use case, as well as having multiple devices under the
same IOMMU group.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The variable tmp was never initialized. Calling assume_init when the
content is not yet initialized causes immediate undefined behaviour.
We also cannot create any intermediate references because they will be
subject to the same requirements for references -- the referred object
must be valid.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The proper way to refer to the project is "Cloud Hypervisor" without the
hyphen in the middle. On the other hand, if one refers to the binary
name, it is "cloud-hypervisor".
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This new document describes the available options for the parameter
`--cpus`, how to use them and what is their usage.
Fixes#3317
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extend the existing list of options available for the 'cpus' parameter
with the newly added option 'affinity'.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
OSTree based systems (such as Fedora CoreOS) behave differently than yum
based systems (such as Fedora) with regarding to the RPM installations.
While the latter will install the RPM on the running system, modifying
it; the former will be layered (installed in a "chroot") and only will
be present on the system after the user boots this layer up.
While in theory there shouldn't be much differences on the installation
itself, when installing cloud-hypervisor on RHCOS, the following issue
would be seen:
```
$ sudo sudo rpm-ostree install cloud-hypervisor
Checking out tree 9c1cdf9... done
Enabled rpm-md repositories: copr:copr.fedorainfracloud.org:fidencio:cloud-hypervisor
Updating metadata for 'copr:copr.fedorainfracloud.org:fidencio:cloud-hypervisor'... done
rpm-md repo 'copr:copr.fedorainfracloud.org:fidencio:cloud-hypervisor'; generated: 2021-11-08T19:02:32Z
Importing rpm-md... done
Resolving dependencies... done
Will download: 1 package (3.1 MB)
Downloading from 'copr:copr.fedorainfracloud.org:fidencio:cloud-hypervisor'... done
Importing packages... done
Checking out packages... done
Running pre scripts... done
Running post scripts... done
error: Running %post for cloud-hypervisor: Executing bwrap(/bin/sh): Child process killed by signal 1; run `journalctl -t 'rpm-ostree(cloud-hypervisor.post)'` for more information
$ sudo journalctl -t 'rpm-ostree(cloud-hypervisor.post)'
-- Logs begin at Fri 2021-11-12 12:18:33 UTC, end at Fri 2021-11-12 12:22:55 UTC. --
Nov 12 12:22:40 rhcoslatest rpm-ostree(cloud-hypervisor.post)[1637]: Failed to set capabilities on file `/usr/bin/cloud-hypervisor' (Operation not supported)
Nov 12 12:22:40 rhcoslatest rpm-ostree(cloud-hypervisor.post)[1637]: usage: setcap [-q] [-v] [-n <rootid>] (-r|-|<caps>) <filename> [ ... (-r|-|<capsN>) <filenameN> ]
Nov 12 12:22:40 rhcoslatest rpm-ostree(cloud-hypervisor.post)[1637]: Note <filename> must be a regular (non-symlink) file.
Nov 12 12:22:40 rhcoslatest rpm-ostree(cloud-hypervisor.post)[1637]: Failed to set capabilities on file `/usr/lib64/cloud-hypervisor/vhost_user_net' (Operation not supported)
Nov 12 12:22:40 rhcoslatest rpm-ostree(cloud-hypervisor.post)[1637]: usage: setcap [-q] [-v] [-n <rootid>] (-r|-|<caps>) <filename> [ ... (-r|-|<capsN>) <filenameN> ]
Nov 12 12:22:40 rhcoslatest rpm-ostree(cloud-hypervisor.post)[1637]: Note <filename> must be a regular (non-symlink) file.
```
It seems to happen as the "chroot" where the package is installed does
not have enough privileges to set the binaries capabilities during the
`%post` step.
Considering this, and also considering that calling `setcap` during
`%post` may not be the most elegant solution when speaking RPM spec
files, let's take advantage of the already existent `%caps()` directive
for the `%files` list to do so.
With that change applied, cloud-hypervisor could be successfully
installed on RHCOS, as shown below:
```
$ sudo rpm-ostree install cloud-hypervisor-19.0-2.el8.x86_64.rpm
Checking out tree 9c1cdf9... done
Enabled rpm-md repositories: copr:copr.fedorainfracloud.org:fidencio:cloud-hypervisor
rpm-md repo 'copr:copr.fedorainfracloud.org:fidencio:cloud-hypervisor' (cached); generated: 2021-11-08T19:02:32Z
Importing rpm-md... done
Resolving dependencies... done
Checking out packages... done
Running pre scripts... done
Running post scripts... done
Running posttrans scripts... done
Writing rpmdb... done
Writing OSTree commit... done
Staging deployment... done
Freed: 18.2 MB (pkgcache branches: 2)
Added:
cloud-hypervisor-19.0-2.el8.x86_64
Run "systemctl reboot" to start a reboot
...
$ getcap /usr/bin/cloud-hypervisor
/usr/bin/cloud-hypervisor = cap_net_admin+ep
$ getcap /usr/lib64/cloud-hypervisor/vhost_user_net
/usr/lib64/cloud-hypervisor/vhost_user_net = cap_net_admin+ep
```
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Although this not strictly needed, considering cloud-hypervisor installs
only 8 binaries in total (4 per target), and that having that list of
files expanded will help us in the very near future, let's just do it
now.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
As part of checking if io_uring is supported various functionality is
tested. The test for whether io_uring supports EventFds is very time
consuming (~10ms) however this test can be removed as a later test will
test for functionality added after this one.
The support for register_eventfd() was released in Linux 5.1 but the
support for register_probe() was released in Linux 5.4. So if the latter
is present the former also is.
Before:
cloud-hypervisor: 4.880411ms: <vmm> INFO:vmm/src/device_manager.rs:1916 -- Creating virtio-block device: DiskConfig { path: Some("/home/rob/workloads/focal-server-cloudimg-amd64-custom-20210609-0.raw"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk0"), disable_io_uring: false, pci_segment: 0 }
cloud-hypervisor: 14.105123ms: <vmm> INFO:vmm/src/device_manager.rs:1998 -- Using asynchronous RAW disk file (io_uring)
cloud-hypervisor: 14.134837ms: <vmm> INFO:vmm/src/device_manager.rs:1916 -- Creating virtio-block device: DiskConfig { path: Some("/tmp/disk"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk1"), disable_io_uring: false, pci_segment: 0 }
cloud-hypervisor: 14.221869ms: <vmm> INFO:vmm/src/device_manager.rs:1998 -- Using asynchronous RAW disk file (io_uring)
After:
cloud-hypervisor: 3.140716ms: <vmm> INFO:vmm/src/device_manager.rs:1916 -- Creating virtio-block device: DiskConfig { path: Some("/home/rob/workloads/focal-server-cloudimg-amd64-custom-20210609-0.raw"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk0"), disable_io_uring: false, pci_segment: 0 }
cloud-hypervisor: 3.376027ms: <vmm> INFO:vmm/src/device_manager.rs:1998 -- Using asynchronous RAW disk file (io_uring)
cloud-hypervisor: 3.40446ms: <vmm> INFO:vmm/src/device_manager.rs:1916 -- Creating virtio-block device: DiskConfig { path: Some("/tmp/disk"), readonly: false, direct: false, iommu: false, num_queues: 1, queue_size: 128, vhost_user: false, vhost_socket: None, poll_queue: true, rate_limiter_config: None, id: Some("_disk1"), disable_io_uring: false, pci_segment: 0 }
cloud-hypervisor: 3.513969ms: <vmm> INFO:vmm/src/device_manager.rs:1998 -- Using asynchronous RAW disk file (io_uring)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This new integration test validates the vCPUs are running on the
expected set of CPUs on the host.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
With the introduction of a new option `affinity` to the `cpus`
parameter, Cloud Hypervisor can now let the user choose the set
of host CPUs where to run each vCPU.
This is useful when trying to achieve CPU pinning, as well as making
sure the VM runs on a specific NUMA node.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Give the option parser the ability to handle tuples with inner brackets
containing list of integers. The following example can now be handled
correctly "option=[key@[v1-v2,v3,v4]]" which means the option is
assigned a tuple with a key associated with a list of integers between
the range v1 - v2, as well as v3 and v4.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The purpose is to add more info while running
spdk vhost tgt. For example, adding more info
(total_size, block_size) to describe the meaning
on creating malloc bdev inside spdk vhost tgt.
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
Because anyhow version 1.0.46 has been yanked, let's move back to the
previous version 1.0.45.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Always properly initialize vectors so that we don't run in undefined
behaviors when the vector gets dropped.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Creates a new generic type Tuple so that the same implementation of
FromStr trait can be reused for both parsing a list of two integers and
parsing a list of one integer associated with a list of integers.
This anticipates the need for retrieving sublists, which will be needed
when trying to describe the host CPU affinity for every vCPU.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In case we want to implement a type that would hold a list of lists, we
need the option parser to be able to ignore the commas for multiple
layers of brackets.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The elements of a list should be using commas as the correct delimiter
now that it is supported. Deprecate use of colons as delimiter.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
While parsing each parameter for getting the list of option/value, we
check if the value is a list separated between brackets. If that's the
case, we reconstruct the list so that it can be parsed afterwards, even
though it uses commas for separating each value.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
While some distros support `musl` libc as a rust target, some others
(such as RHEL) definitely don't (at least not installing distro
packages).
Knowing this, let's have a simple way to not have a hard dependency on
musl on our spec file.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
`using_rustup` is needed as distros (such as Fedora or RHEL) don't
provide the users a way to install`rustup` without conflicting with the
distro provided `rust` package.
In order to minimize the troubles for those who want to build
cloud-hypervisor using the distros packages, let's allow the users to
change that variable and then simply rely on their system packages.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Let's document the most basic assumptions about the RPM spec file we
maintain for cloud-hypervisor, being those:
* You must have access to the internet during build, otherwise pulling
the vendored code down won't work.
* You must have rustup installed on your system, otherwise basic checks
performed during the build target will fail.
* You must have both gnu and musl libc targets installed, otherwise
either the dynamically or the statically link build will fail.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Avoid removing from the source vector by using Vec::extend_from_slice().
The primitive values (bytes) will be copied from the source in either
case.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the predicates as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the predicates as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As it relies on primitive types that have already been ported
Aml::append_aml_bytes can be used for the child values.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the child as not all
structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now it still relies on Aml::to_aml_bytes() for the children as not
all structures have been ported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Since we know all the numerical types now have implementations of
Aml::append_aml_bytes() we can use that directly.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As this is a DWord and we know that DWord::append_aml_bytes() is
implemented we may call it directly.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This is a naive implementation and there is scope to improve this
without extra copies but that requires addressing the users to ensure
there are no lifetime issues.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As an optimisation to avoid allocating byte vectors add a trait method
that will append to an existing vector. Further to support the
transition add a default implementation of Aml::to_aml_bytes() that uses
the newly added Aml::append_aml_bytes()
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Now that vfio-ioctls correctly exposes the list of capabilities related
to each region, Cloud Hypervisor can decide to mmap a region based on
the presence or absence of MSIX_MAPPABLE. Instead of blindly mmap'ing
the region, we check if the MSI-X table or PBA is present on the BAR,
and if that's the case, we look for MSIX_MAPPABLE.
If MSIX_MAPPABLE is present, we can go ahead and mmap the entire region.
If MSIX_MAPPABLE is not present, we simply ignore the mmap'ing of this
region as it wouldn't be supported.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As v19.0 has been release almost a month ago, let's also update the
project's spec file accordingly.
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
By merging receive buffers through the VIRTIO_NET_F_MRG_RXBUF feature,
as well as enabling the use of indirect descriptors through
VIRTIO_RING_F_INDIRECT_DESC feature, we achieve better throughput for
the virtio-net device without hurting its latency.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This allocator allocates 64-bit MMIO addresses for use with platform
devices e.g. ACPI control devices and ensures there is no overlap with
PCI address space ranges which can cause issues with PCI device
remapping.
Use this allocator the ACPI platform devices.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rather than use the system MMIO allocator for RAM use an allocator that
covers the full RAM range.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This is because the SGX region will be placed between the end of ram and
the start of the device area.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
With the segment id now encoded in the bdf it is not necessary to have
the separate field for it.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Refactor the existing virtio fs test to support controlling the PCI
segment the device should be added to and use this for a multiple
segment test.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Refactor the existing net hotplug test to support controlling the PCI
segment the device should be added to and use this for a multiple
segment test.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Refactor the existing pmem hotplug test to support controlling the PCI
segment the device should be added to and use this for a multiple
segment test.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In particular use the accessor for getting the device id from the bdf.
As a side effect the VIOT table is now segment aware.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This will allow making the code that handles bdf parsing simpler and
remove the need for manual shifting.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Since each segment must have a non-overlapping memory range associated
with it the device memory must be equally divided amongst all segments.
A new allocator is used for each segment to ensure that BARs are
allocated from the correct address ranges. This requires changes to
PciDevice::allocate/free_bars to take that allocator and when
reallocating BARs the correct allocator must be identified from the
ranges.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For all the devices that support being hotplugged (disk, net, pmem, fs
and vsock) add "pci_segment" option and propagate that through to the
addition onto the PCI busses.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Move the decision on whether to use a 64-bit bar up to the DeviceManager
so that it can use both the device type (e.g. block) and the PCI segment
ID to decide what size bar should be used.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Generate a set of 8 IRQs and round-robin distribute those over all the
slots for a bus. This same set of IRQs is then used for all PCI
segments.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The platform config may specify a number of PCI segments to use, if this
greater than 1 then we add supplemental PCI segments as well as the
default segment.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This currently contains only the number over PCI segments to create.
This is limited to 16 at the moment which should allow 496 user specified
PCI devices.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For the bus scanning the GED AML code now calls into a PSCN method that
scans all buses. This approach was chosen since it handles the case
correctly where one GED interrupt is services for two hotplugs on
distinct segments.
The PCIU and PCID field values are now determined by the PSEG field that
is uses to select which segment those values should be used for.
Similarly _EJ0 will notify based on the value of _SEG.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Replace the hardcoded zero PCI segment id when adding devices to the bus
and extend the DeviceTree to hold the PCI segment id.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Since each segment must have disjoint address spaces only advertise
address space in the 32-bit range and the PIO address space on the
default (zero) segment.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Split PciSegment::new_default_segment() into a separate
PciSegment::new() and those parts required only for the default segment
(PIO PCI config device.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For now this still contains just one segment but is expanding in
preparation for more segments.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit moves the code that generates the DSDT data for the PCI bus
into PciSegment making no functional changes to the generated AML.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In order to get proper performance out of hardware that might be passed
through the VM with VFIO, we decide to try mapping any region marked as
mappable, ignoring the failure and moving on to the next region. When
the mapping succeeds, we establish a list of user memory regions so that
we enable only subparts of the global mapping through the hypervisor.
This allows MSI-X table and PBA to keep trapping accesses from the guest
so that the VMM can properly emulate MSI-X.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Variables that start with underscore are used to silence rustc.
Normally those variables are not used in code.
This patch drops the underscore from variables that are used. This is
less confusing to readers.
No functional change intended.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This makes it much easier to use since the info!() level produces far
fewer messages and thus has less overhead.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Create a source archive with vendored sources as part of the release
workflow. This is to enable building the release offline for distros.
Note: The use of realpath and CARGO_HOME are to work around a cargo
vendor bug: https://github.com/rust-lang/cargo/issues/8443.
Signed-off-by: William Douglas <william.douglas@intel.com>
Relying on the vm-virtio/virtio-queue crate from rust-vmm which has been
copied inside the Cloud Hypervisor tree, the entire codebase is moved to
the new definition of a Queue and other related structures.
The reason for this move is to follow the upstream until we get some
agreement for the patches that we need on top of that to make it
properly work with Cloud Hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This crate contains a new definition of the Queue, AvailIter,
DescriptorChain and Descriptor structures forked from the upstream
crate rust-vmm/vm-virtio d62f2246568d4f544e848b23c025b268effac5ca.
The following patches have been applied on top of this base in order to
make it work correctly with Cloud Hypervisor requirements:
- Add MSI vector field to the Queue
In order to help with MSI/MSI-X support, it is convenient to store the
value of the interrupt vector inside the Queue directly.
- Handle address translations
For devices with access to data in memory being translated, we add to
the Queue the ability to translate the address stored in the
descriptor.
It is very helpful as it performs the translation right after the
untranslated address is read from memory, avoiding any errors from
happening from the consumer's crate perspective. It also allows the
consumer to reduce greatly the amount of duplicated code for applying
the translation in many different places.
- Add helpers for Queue structure
They are meant to help crate's consumers getting/setting information
about the Queue.
These patches can be found on the 'ch' branch from the Cloud Hypervisor
fork: https://github.com/cloud-hypervisor/vm-virtio.git
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This was causing some issues because of the use of 2 different versions
for the vm-memmory crate. We'll wait for all dependencies to be properly
resolved before we move to 0.7.0.
This reverts commit 76b6c62d07.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We now build SPDK-NVMe inside the container only for the x86_64
platform, as the cross-platform build with 'docker buildx' does not work
for SPDK. For aarch64 the platform, we will build it as a part of the CI
workflow (which is running on the bare-metal machine).
Signed-off-by: Bo Chen <chen.bo@intel.com>
PRs from dependabot are failing to meet the check from DCO as the
Signed-Off-By is now a GitHub support email address.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These fields are needed for correctly accessing the datastructures but
are not read by the VHDX implementation itself.
As identified by the new beta clippy.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These structs are not read on the VMM side but are used in communication
with the guest.
As identified by the new beta clippy.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When allocating PCI MMIO BARs they should always be naturally aligned
(i.e. aligned to the size of the BAR itself.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Hypercall register needs to be saved and restored for
TLB flush and IPI synthetic features enablement.
Enabling these two synthetic features improves
guest performance.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The allocate_bars method has a side effect which collates the BARs used
for the device and stores them internally. Ensure that any use of this
internal state is after the state is created otherwise no MMIO regions
will be seen and so none will be mapped.
Fixes: #3237
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When the synthetic interrupt controller is enabled, an extra set of MSRs
must be stored in case of migration. There was one MSR missing in the
list, HV_X64_MSR_SINT14 corresponding to the 15th interrupt source from
the synthetic interrupt controller.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There's no need to patch the vhost crate anymore since the fixes we were
looking for have been released as part of 0.2.0 on crates.io.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of creating a MemoryManager from scratch, let's reuse the same
code path used by snapshot/restore, so that memory regions are created
identically to what they were on the source VM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that all the pieces are in place, we can restore a VM with the new
codepath that restores properly all memory regions, allowing for ACPI
memory hotplug to work properly with snapshot/restore feature.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extending the MemoryManager::new() function to be able to create a
MemoryManager from data that have been previously stored instead of
always creating everything from scratch.
This change brings real added value as it allows a VM to be restored
respecting the proper memory layout instead of hoping the regions will
be created the way they were before.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Storing multiple data coming from the MemoryManager in order to be able
to restore without creating everything from scratch.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This new function will be able to restore memory regions and memory
zones based on the GuestMemoryMapping list that will be provided through
snapshot/restore and migration phases.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This can help identifying which zone relates to which memory range.
This is going to be useful when recreating GuestMemory regions from
the previous layout instead of having to recreate everything from
scratch.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Create a dedicated function to factorize the allocation of the memory
ranges, and helping with the simplification of MemoryManager::new()
function.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By updating the list of GuestMemory regions with the virtio-mem ones
before the creation of the MemoryManager, we know the GuestMemory is up
to date and the allocation of memory ranges is simplified afterwards.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to simplify MemoryManager::new() function. let's move the
memory configuration validation to its own function.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This script checks if an image is compatible with Cloud Hypervisor.
At first, it detects the image type(raw or qcow2),
partition type whether it is DOS or GPT.
Then it mounts the image and checks if VIRTIO Configs
are enabled in the kernel config. In the end, it provides
a message about the compatibility of the image.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Move the PciSegment struct and the associated code to a new file. This
will allow some clearer separation between the core DeviceManager and
PCI handling.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Move the PCI related state from the DeviceManager struct to a PciSegment
struct inside the DeviceManager. This is in preparation for multiple
segment support. Currently this state is just the bus itself, the MMIO
and PIO config devices and hotplug related state.
The main change that this required is using the Arc<Mutex<PciBus>> in
the device addition logic in order to ensure that
the bus could be created earlier.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When using PVH for booting (which we use for all firmwares and direct
kernel boot) the Linux kernel does not configure LA57 correctly. As such
we need to limit the address space to the maximum 4-level paging address
space.
If the user knows that their guest image can take advantage of the
5-level addressing and they need it for their workload then they can
increase the physical address space appropriately.
This PR removes the TDX specific handling as the new address space limit
is below the one that that code specified.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Whenever running TDX, we must pass the ACPI tables to the TDVF firmware
running in the guest. The proper way to do this is by adding the tables
to the TdHob as a TdVmmData type, so that TDVF will know how to access
these tables and expose them to the guest OS.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of having the ACPI tables being created both in x86_64 and
aarch64 implementations of configure_system(), we can remove the
duplicated code by moving the ACPI tables creation in vm.rs inside the
boot() function.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
On AArch64, device hotplug can be enabled with ACPI. Therefore,
this commit enables the hotplug test case for following devices:
- PCI bar reprogramming
- virtio-disk
- virtio-net
- macvtap
- virtio-vsock
- virtio-pmem: Works with the latest reference kernel
- virtio-fs: Works with the latest reference kernel
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Currently vfio and nested virtualization is not used on AArch64,
and SGX is a x86_64 only feature. Therefore this commit adds the
architecture gates for helper functions related to vfio, SGX, and
nested virtualization to mute warnings when building tests on the
AArch64 platform.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Update introduction of option `prefault`.
In addition, this commit also did the following:
- Rearrange options, synchronize order with `config.rs`.
- Break long lines in `hugepages`.
- Update old example of `hugepages` in memory zone.
Signed-off-by: Li Yu <liyu.yukiteru@bytedance.com>
Memory hotplug and virtio_balloon works on arm64 with:
- memory hotplug: An updated kernel using ACPI
- virtio balloon: `stress` installed in the cloud image
Therefore, we can enable test cases for them in integration test.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
On MSHV some of the integration test cases are not supported yet
or still in progress. This patch disables all those test cases.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The argument `prefault` is provided in MemoryManager, but it can
only be used by SGX and restore.
With prefault (MAP_POPULATE) been set, subsequent page faults will
decrease during running, although it will make boot slower.
This commit adds `prefault` in MemoryConfig and MemoryZoneConfig.
To resolve conflict between memory and restore, argument
`prefault` has been changed from `bool` to `Option<bool>`, when
its value is None, config from memory will be used, otherwise
argument in Option will be used.
Signed-off-by: Yu Li <liyu.yukiteru@bytedance.com>
Setting the reply_ack should depend on the set of acknowledged features
containing the REPLY_ACK flag.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding some bits to the existing live migration test with NUMA in order
to properly validate virtio-mem works with live migration.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By using a single file for storing the memory ranges, we simplify the
way snapshot/restore works by avoiding multiples files, but the main and
more important point is that we have now a way to save only the ranges
that matter. In particular, the ranges related to virtio-mem regions are
not always fully hotplugged, meaning we don't want to save the entire
region. That's where the usage of memory ranges is interesting as it
lets us optimize the snapshot/restore process when one or multiple
virtio-mem regions are involved.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
During snapshot/restore we will need to store this structure, which is
why it must derive the Versionize trait.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The function memory_range_table() will be reused by the MemoryManager in
a following patch to describe all the ranges that we should snapshot.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Copy only the memory ranges that have been plugged through virtio-mem,
allowing for an interesting optimization regarding the time it takes to
migrate a large virtio-mem device. Even if the hotpluggable space is
very large (say 64GiB), if only 1GiB has been previously added to the
VM, only 1GiB will be sent to the destination VM, avoiding the transfer
of the remaining 63GiB which are unused.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to support correctly the snapshot/restore and migration use
cases, we must be careful with the ranges that we discard by punching
holes. On restore, there might be some ranges already plugged in,
meaning they should not be discarded. That's why we loop over the list
of blocks to discard only the ranges that are marked as unplugged.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By creating the BlocksState object in the MemoryManager, we can directly
provide it to the virtio-mem device when being created. This will allow
the MemoryManager through each VirtioMemZone to have a handle onto the
blocks that are plugged at any point in time.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This is going to be useful to let virtio-mem report the list of ranges
that are currently plugged, so that both snapshot/restore and migration
will copy only what is needed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This will be helpful to support the creation of a MemoryRangeTable from
virtio-mem, as it uses 2M pages.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding the snapshot/restore support along with migration as well,
allowing a VM with virtio-mem devices attached to be properly
migrated.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The amount of memory plugged in the virtio-mem region should always be
kept up to date in the hotplugged_size field from VirtioMemZone.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There's no need to duplicate the GuestMemory for snapshot purpose, as we
always have a handle onto the GuestMemory through the guest_memory
field.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we only support a single PCI bus right now advertise only a single
bus in the ACPI tables. This reduces the number of VM exits from probing
substantially.
Number of PCI config I/O port exits: 17871 -> 1551 (91% reduction) with
direct kernel boot.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Use a simpler method for extracting the affected slot on the eject
command. Also update the terminology to reflect that this a slot rather
than a bdf (which is what device id refers to elsewhere.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Refactor the serial buffer handling in order to write the serial
buffer's output to a PTY connected after the serial device stops being
written to by the guest.
This change moves the serial buffer initialization inside the serial
manager. That is done to allow the serial buffer to be made aware of
the PTY and epoll fds needed in order to modify the
EpollDispatch::File trigger. These are then used by the serial buffer
to trigger an epoll event when the PTY fd is writable and the buffer
has content in it. They are also used to remove the trigger when the
buffer is emptied in order to avoid unnecessary wake-ups.
Signed-off-by: William Douglas <william.douglas@intel.com>
In preparation for reorganizing how the serial output is constructed
add methods to the serial devices for setting the out buffer after the
device is created.
Also add a method to enable flushing the output buffer to be used to
write the buffer to the PTY fd once the PTY is writable.
Signed-off-by: William Douglas <william.douglas@intel.com>
In integration test, we fetch latest EDK2 code on its master branch and
build. While the update on EDK2 master is frequent. And the building is
time consuming. It takes a lot of time in CI and local test. Floating on
top of a busy master branch also bring potential risk in tracking and
debugging.
Now that Cloud Hypervisor support in EDK2 has been steady, we can pin
the EDK2 software versions to avoid unnecessary updating and building.
We can update the versions manually every after several months.
The commit also optimizes the build process by applying multi-threaded
compiling.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Added a bash function in integration test script to checkout source code
of a GIT repo with specified branch and commit.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
These packages will be used to compile `stress` from source, and
the `stress` will be used by the virtio-balloon integration test.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Both read_exact_from() and write_all_to() functions from the GuestMemory
trait implementation in vm-memory are buggy. They should retry until
they wrote or read the amount of data that was expected, but instead
they simply return an error when this happens. This causes the migration
to fail when trying to send important amount of data through the
migration socket, due to large memory regions.
This should be eventually fixed in vm-memory, and here is the link to
follow up on the issue: https://github.com/rust-vmm/vm-memory/issues/174
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Refactored the test case `test_virtio_iommu` to adapt architectures and
different choices among ACPI and FDT. In the case of ACPI, a Focal image
with modified kernel is tested.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
On AArch64, ACPI must work with UEFI (EDK2). This way, the kernel is
always loaded from the disk image. We can not specify a direct custom
kernel while using ACPI.
To use a custom kernel, we have to replace the kernel file in the disk
image by:
- Making a copy of the Focal `raw` image
- Mounting the rootfs with `libguestfs-tools`
- Replacing the compressed kernel file
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Installed `libguestfs-tools` to replace kernel file in cloud image.
Installed a kernel as `libguestfs-tools` requires.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Implement the infrastructure that lets a virtio-mem device map the guest
memory into the device. This is necessary since with virtio-mem zones
memory can be added or removed and the vfio-user device must be
informed.
Fixes: #3025
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By moving this from the VfioUserPciDevice to DeviceManager the client
can be reused for handling DMA mapping behind an IOMMU.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For vfio-user the mapping handler is per device and needs to be removed
when the device in unplugged.
For VFIO the mapping handler is for the default VFIO container (used
when no vIOMMU is used - using a vIOMMU does not require mappings with
virtio-mem)
To represent these two use cases use an enum for the handlers that are
stored.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Adding the snapshot/restore support along with migration as well,
allowing a VM with a virtio-balloon device attached to be properly
migrated.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Given the 'virtiofsd' executable is used in multiple CI workers,
installing them directly to the docker image is more efficient and can
save CI time.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Looking up devices on the port I/O bus is time consuming during the
boot at there is an O(lg n) tree lookup and the overhead from taking a
lock on the bus contents.
Avoid this by adding a fast path uses the hardcoded port address and
size and directs PCI config requests directly to the device.
Command line:
target/release/cloud-hypervisor --kernel ~/src/linux/vmlinux --cmdline "root=/dev/vda1 console=ttyS0" --serial tty --console off --disk path=~/workloads/focal-server-cloudimg-amd64-custom-20210609-0.raw --api-socket /tmp/api
PIO exit: 17913
PCI fast path: 17871
Percentage on fast path: 99.8%
perf before:
marvin:~/src/cloud-hypervisor (main *)$ perf report -g | grep resolve
6.20% 6.20% vcpu0 cloud-hypervisor [.] vm_device::bus::Bus::resolve
perf after:
marvin:~/src/cloud-hypervisor (2021-09-17-ioapic-fast-path *)$ perf report -g | grep resolve
0.08% 0.08% vcpu0 cloud-hypervisor [.] vm_device::bus::Bus::resolve
The compromise required to implement this fast path is bringing the
creation of the PciConfigIo device into the DeviceManager::new() so that
it can be used in the VmmOps struct which is created before
DeviceManager::create_devices() is called.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Added a section in "Usage" chapter of "iommu.md" to introduce the
special behavior when virtio-iommu is working with FDT on AArch64.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
For AArch64, now virtual IOMMU is only tested on FDT, not ACPI.
In the case of FDT, the behavior of IOMMU is a bit different with ACPI.
All the devices on the PCI bus will be attached to the virtual IOMMU,
except the virtio-iommu device itself. So these devices will all be
added to IOMMU groups, and appear in folder '/sys/kernel/iommu_groups/'.
The result is, on AArch64 IOMMU group '0' contains "0000:00:01.0" which
is the console device. But on X86, console device is not attached to
IOMMU. So the IOMMU group '0' contains "0000:00:02.0" which is the first
disk.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
The MSI IOVA address on X86 and AArch64 is different.
This commit refactored the code to receive the MSI IOVA address and size
from device_manager, which provides the actual IOVA space data for both
architectures.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Move the definition of MSI space to layout.rs, so other crates can
reference it. Now it is needed by virtio-iommu.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Add a virtio-iommu node into FDT if iommu option is turned on. Now we
support only one virtio-iommu device.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This change switches from handling serial input in the VMM thread to
its own thread controlled by the SerialManager.
The motivation for this change is to avoid the VMM thread being unable
to process events while serial input is happening and vice versa.
The change also makes future work flushing the serial buffer on PTY
connections easier.
Signed-off-by: William Douglas <william.douglas@intel.com>
This change adds a SerialManager with its own epoll handling that
should be created and run by the DeviceManager when creating an
appropriately configured console (serial tty or pty).
Both stdin and pty input are handled by the SerialManager. The stdin
and pty specific methods used by the VMM should be removed in a future
commit.
Signed-off-by: William Douglas <william.douglas@intel.com>
The clone method for PtyPair should have been an impl of the Clone
trait but the method ended up not being used. Future work will make
use of the trait however so correct the missing trait implementation.
Signed-off-by: William Douglas <william.douglas@intel.com>
libc::getrandom need to be called inside unsafe and it is not
cross-platform friendly.
Change it to getrandom::getrandom that is safe and cross-platform
friendly.
Signed-off-by: Hui Zhu <teawater@antfin.com>
Updating kvm-ioctls from 0.9.0 to 0.10.0 now that Cloud Hypervisor
relies on kvm-bindings 0.5.0.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
For most use cases, there is no need to create multiple VFIO containers
as it causes unwanted behaviors. Especially when passing multiple
devices from the same IOMMU group, we need to use the same container so
that it can properly list the groups that have been already opened. The
correct logic was already there in vfio-ioctls, but it was incorrectly
used from our VMM implementation.
For the special case where we put a VFIO device behind a vIOMMU, we must
create one container per device, as we need to control the DMA mappings
per device, which is performed at the container level. Because we must
keep one container per device, the vIOMMU use case prevents multiple
devices attached to the same IOMMU group to be passed through the VM.
But this is a limitation that we are fine with, especially since the
vIOMMU doesn't let us group multiple devices in the same group from a
guest perspective.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This allows Cloud Hypervisor to be run under `perf` as some of the
signals will already be blocked in the child process.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Update the kvm-bindings dependency so that Cloud Hypervisor now depends
on the version 0.5.0, which is based on Linux kernel v5.13.0. We still
have to rely on a forked version to be able to serialize all the KVM
structures we need.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Validate the size of I/O reads and check that no request is made to an
out of bounds index (which would cause a panic.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Check the size of data buffer for reading on the ApciPmTimer device to
avoid a potential panic if the guest uses non-DWORD access.
Simplify the zeroring of the buffer for AcpiShutdownDevice.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When a pty is resized (using the TIOCSWINSZ ioctl -- see ioctl_tty(2)),
the kernel will send a SIGWINCH signal to the pty's foreground process
group to notify it of the resize. This is the only way to be notified
by the kernel of a pty resize.
We can't just make the cloud-hypervisor process's process group the
foreground process group though, because a process can only set the
foreground process group of its controlling terminal, and
cloud-hypervisor's controlling terminal will often be the terminal the
user is running it in. To work around this, we fork a subprocess in a
new process group, and set its process group to be the foreground
process group of the pty. The subprocess additionally must be running
in a new session so that it can have a different controlling
terminal. This subprocess writes a byte to a pipe every time the pty
is resized, and the virtio-console device can listen for this in its
epoll loop.
Alternatives I considered were to have the subprocess just send
SIGWINCH to its parent, and to use an eventfd instead of a pipe.
I decided against the signal approach because re-purposing a signal
that has a very specific meaning (even if this use was only slightly
different to its normal meaning) felt unclean, and because it would
have required using pidfds to avoid race conditions if
cloud-hypervisor had terminated, which added complexity. I decided
against using an eventfd because using a pipe instead allows the child
to be notified (via poll(2)) when nothing is reading from the pipe any
more, meaning it can be reliably notified of parent death and
terminate itself immediately.
I used clone3(2) instead of fork(2) because without
CLONE_CLEAR_SIGHAND the subprocess would inherit signal-hook's signal
handlers, and there's no other straightforward way to restore all signal
handlers to their defaults in the child process. The only way to do
it would be to iterate through all possible signals, or maintain a
global list of monitored signals ourselves (vmm:vm::HANDLED_SIGNALS is
insufficient because it doesn't take into account e.g. the SIGSYS
signal handler that catches seccomp violations).
Signed-off-by: Alyssa Ross <hi@alyssa.is>
This prepares us to be able to handle console resizes in the console
device's epoll loop, which we'll have to do if the output is a pty,
since we won't get SIGWINCH from it.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Musl often uses mmap to allocate memory where Glibc would use brk.
This has caused seccomp violations for me on the API and signal
handling threads.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
As well as reducing the amount of code this also improves the binary
size slightly:
cargo bloat --release -n 2000 --bin cloud-hypervisor | grep virtio_devices::seccomp_filters::get_seccomp_rules
Before:
0.1% 0.2% 7.8KiB virtio_devices virtio_devices::seccomp_filters::get_seccomp_rules
After:
0.0% 0.1% 3.0KiB virtio_devices virtio_devices::seccomp_filters::get_seccomp_rules
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This patch adds a separate function to launch two guest VMs and ensure
they are connected through ovs-dpdk, so that we can reuse this function
in other tests, e.g. the test for live-migration with ovs-dpdk.
Signed-off-by: Bo Chen <chen.bo@intel.com>
error: all if blocks contain the same code at the end
--> vmm/src/memory_manager.rs:884:9
|
884 | / Ok(mm)
885 | | }
| |_________^
Signed-off-by: Bo Chen <chen.bo@intel.com>
This concept ends up being broken with multiple types on input connected
e.g. console on TTY and serial on PTY. Already the code for checking for
injecting into the serial device checks that the serial is configured.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Introduce a common solution for spawning the virtio threads which will
make it easier to add the panic handling.
During this effort I discovered that there were no seccomp filters
registered for the vhost-user-net thread nor the vhost-user-block
thread. This change also incorporates basic seccomp filters for those as
part of the refactoring.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Currently we need to test both device tree and ACPI on AArch64. As
the number of ACPI test cases is gradually increasing and expected
to increase in the future, it is better to extract all ACPI test
cases on AArch64 to a single module.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Current AArch64 power button is only for device tree using a PL061
GPIO controller device. Since AArch64 now supports ACPI, this
commit extend the power button on AArch64 to:
- Using GED for ACPI+UEFI boot.
- Using PL061 for device tree boot.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This message only occurs sporadically and so it should be included at
info!() level. Enhance the output to also include the BAR number.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These statements are useful for understanding the cause of reset or
shutdown of the VM and are not spammy so should be included at info!()
level.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This patch adds a separate function to perform common numa checks, so
that we can reuse this function in other tests, e.g. the test for
live-migration with numa.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Despite setting up a dedicated thread for signal handling, we weren't
making sure that the signals we were listening for there were actually
dispatched to the right thread. While the signal-hook provides an
iterator API, so we can know that we're only processing the signals
coming out of the iterator on our signal handling thread, the actual
signal handling code from signal-hook, which pushes the signals onto
the iterator, can run on any thread. This can lead to seccomp
violations when the signal-hook signal handler does something that
isn't allowed on that thread by our seccomp policy.
To reproduce, resize a terminal running cloud-hypervisor continuously
for a few minutes. Eventually, the kernel will deliver a SIGWINCH to
a thread with a restrictive seccomp policy, and a seccomp violation
will trigger.
As part of this change, it's also necessary to allow rt_sigreturn(2)
on the signal handling thread, so signal handlers are actually allowed
to run on it. The fact that this didn't seem to be needed before
makes me think that signal handlers were almost _never_ actually
running on the signal handling thread.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Move the processing of the input from stdin, PTY or file from the VMM
thread to the existing virtio-console thread. The handling of the resize
of a virtio-console has not changed but the name of the struct used to
support that has been renamed to reflect its usage.
Fixes: #3060
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Downcasting of GicDevice trait might fail. Therefore we try to
downcast the trait first and only if the downcasting succeeded we
can then use the object to call methods. Otherwise, do nothing and
log the failure.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit implements the GIC (including both GICv3 and GICv3ITS)
Pausable trait. The pause of device manager will trigger a "pause"
of GIC, where we flush GIC pending tables and ITS tables to the
guest RAM.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This test exercises the local live-migration between two Cloud
Hypervisor VMs on the same host. It ensures the following behaviors:
1. The source VM is up and functional (including various virtio-devices
are working properly);
2. The 'send-migration' and 'receive-migration' command finished
successfully;
3. The source VM terminated gracefully after live migration;
4. The destination VM is functional (including various virtio-devices
are working properly) after live migration.
Note: This test does not use vsock as we can't create two identical
vsock on the same host.
Fixes: #2965
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch adds a dedicate function to include the common checks on the
virtio-devices from the 'test_snapshot_restore' test, which will also be
reused for the upcoming 'test_live_migration' test.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This prevents the boot of the guest kernel from being blocked by
blocking I/O on the serial output since the data will be buffered into
the SerialBuffer.
Fixes: #3004
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Introduce a dynamic buffer for storing output from the serial port. The
SerialBuffer implements std::io::Write and can be used in place of the
direct output for the serial device.
The internals of the buffer is a vector that grows dynamically based on
demand up to a fixed size at which point old data will be overwritten.
Currently the buffer is only flushed upon writes.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The rust-vmm crates we're pulling from git have renamed their main
branches. We need to update the branch names we're giving to Cargo,
or people who don't have these dependencies cached will get errors
like this when trying to build:
error: failed to get `vm-fdt` as a dependency of package `arch v0.1.0 (/home/src/cloud-hypervisor/arch)`
Caused by:
failed to load source for dependency `vm-fdt`
Caused by:
Unable to update https://github.com/rust-vmm/vm-fdt?branch=master#031572a6
Caused by:
object not found - no match for id (031572a6edc2f566a7278f1e17088fc5308d27ab); class=Odb (9); code=NotFound (-3)
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Remove the indirection of a dispatch table and simply use the enum as
the event data for the events.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Definition of kvm_tdx_init_vm used by INIT_VM has been updated in latest
kernel, needing an update on the Cloud Hypervisor side as well.
Update structure TdxInitVm to fit this change and avoid -EINVAL to be
returned by the kernel.
Signed-off-by: Jiaqi Gao <jiaqi.gao@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Moving to the latest kernel 5.14 simplifies greatly the list of patches
that we need to carry. Since virtio-iommu has been merged as part of the
5.14 release, the only remaining patches are virtio-watchdog and the EFI
reboot.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Currently the latest cloudhypervisor/dev docker container is the
multi-arch image. We can pull the arm image directly.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
To enable live-migration for vhost-user devices, we now always shutdown
the source VM when the migration is completed. This patch reflects this
change in the documentation.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This resolves an issue with hotplug -> removal -> hotplug of a vfio-user
device as the allocator was not updated with the now unused entries.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Use two separate events for the console and serial PTY and then drive
the handling of the inputs on the PTY separately. This results in the
correct behaviour when both console and serial are attached to the PTY
as they are triggered separately on the epoll so events are not lost.
Fixes: #3012
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Check the config to find out which device is attached to the tty and
then send the input from the user into that device (serial or
virtio-console.)
Fixes: #3005
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The type is to change from 32-bit to 64-bit. See
https://github.com/rust-lang/libc/issues/1848.
The change is announced via a deprecation warning. Cloud Hypervisor's
code does not need changing. Simply suppress these warnings.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The Jenkins master is now known as the controller and the agent it provides is
called "built-in".
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The fuzzer needs to take a larger input for the whole disk image to
be most useful. Since the file is small we can test by reading and
writing over the whole file.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Signed-off-by: Fazla Mehrab <akm.fazla.mehrab@intel.com>
Two tests for booting Linux cloud image from the different VHDx files:
fixed and dynamic. Another test for testing the dynamic expansion of a
generated VHDx file.
Signed-off-by: Fazla Mehrab <akm.fazla.mehrab@intel.com>
vhdx_sync.rs in block_util implements traits to represent the vhdx
crate as a supported block device in the cloud hypervisor. The vhdx
is added to the block device list in device_manager.rs at the vmm
crate so that it can automatically detect a vhdx disk and invoke the
corresponding crate.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Fazla Mehrab <akm.fazla.mehrab@intel.com>
Microsoft’s VHDx block device format specification is implemented
here as a crate. This commit includes the implementation for the
fixed and dynamic formats, where the other format is known as
differencing. The vhdx_header.rs, vhdx_bat.rs, vhdx_metadata.rs
implements parser and manipulators for the VHDx header, Block
Allocation Table, and metadata, respectively, for the VHDx file.
The vhdx_io.rs implements read and write routines for the VHDx file.
The vhdx.rs implements the Vhdx structure, which provides the wrapper
functions for standard I/O operations like read, write, and seek.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Fazla Mehrab <akm.fazla.mehrab@intel.com>
This commit adds a github action to release statically-linked arm64
binaries - ch-remote and cloud-hypervisor.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
We are relying on applying empty 'seccomp' filters to support the
'--seccomp false' option, which will be treated as an error with the
updated 'seccompiler' crate. This patch fixes this issue by explicitly
checking whether the 'seccomp' filter is empty before applying the
filter.
Signed-off-by: Bo Chen <chen.bo@intel.com>
The current code was expecting a reply with only the header, which
wasn't reading the rest of payload that was provided. This was causing
the following replies to be completely wrong as they were shifted by the
previous payload that wasn't read.
The simple way to fix this issue is by reading the header and the
expected payload when getting a reply from a DmaUnmap request.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Change the block size to the standard 512 byte sector size to that
disk images can be used (since their partition tables will be specified
in terms of 512 byte sectors.)
Also remove the hugepages=on option from the command line as it is not
necessary.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When mapping the region into the guest ensure that all the fields are
updated correctly as the unmap code path checks that they are set.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit adds an AArch64-only integration test case called
`test_guest_numa_nodes_dt` so that it is possible to test the
NUMA for the FDT on AArch64 platform.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Based on `--memory-zone` and `--numa` param in the Cloud Hypervisor
cmdline, the NUMA memory configuration is described. This commit
adds such NUMA memory configuration to the FDT memory node.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
It is forbidden that the same memory zone belongs to more than one
NUMA node. This commit adds related validation to the `--numa`
parameter to prevent the user from specifying such configuration.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
For the purpose of identification, each NUMA node is associated
with a unique token known as a `numa-node-id`. For the purpose of
device tree binding, a `numa-node-id` is a 32-bit integer.
The CPU node is associated with a NUMA node by the presence of a
`numa-node-id` property which contains the node id of the device.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The optional device tree node distance-map describes the relative
distance (memory latency) between all NUMA nodes.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This is to make sure the NUMA node data structures can be accessed
both from the `vmm` crate and `arch` crate.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The AArch64 platform provides a NUMA binding for the device tree,
which means on AArch64 platform, the NUMA setup can be extended to
more than the ACPI feature.
Based on above, this commit extends the NUMA setup and data
structures to following scenarios:
- All AArch64 platform
- x86_64 platform with ACPI feature enabled
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Signed-off-by: Michael Zhao <Michael.Zhao@arm.com>
Introducing a new structure VhostUserCommon allowing to factorize a lot
of the code shared between the vhost-user devices (block, fs and net).
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of panicking with an expect() function, the QcowDiskSync::new
function now propagates the error properly. This ensures the VMM will
not panic, which might be the source of weird errors if only one thread
exits while the VMM continues to run.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of running the generic block fuzzer with QCOW, it's better to
use a RAW file since it's less complex and it will focus on virtqueues.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We cannot let vhost-user devices connect to the backend when the Block,
Fs or Net object is being created during a restore/migration. The reason
is we can't have two VMs (source and destination) connected to the same
backend at the same time. That's why we must delay the connection with
the vhost-user backend until the restoration is performed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Introducing a new function to factorize a small part of the
initialization that is shared between a full reinitialization and a
restoration.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The code wasn't doing what it was expected to. The '?' was simply
returning the error to the top level function, meaning the Err() case in
the match was never hit. Moving the whole logic to a dedicated function
allows to identify when something got wrong without propagating to the
calling function, so that we can still stop the dirty logging and
unpause the VM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In case the migration succeeds, the destination VM will be correctly
running, with potential vhost-user backends attached to it. We can't let
the source VM trying to reconnect to the same backends, which is why
it's safer to shutdown the source VM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to prevent the vhost-user devices from reconnecting to the
backend after the migration has been successfully performed, we make
sure to kill the thread in charge of handling the reconnection
mechanism.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add a way to let every Migratable object know when the migration is
complete, so they can take appropriate actions.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
During a migration, the vhost-user device talks to the backend to
retrieve the dirty pages. Once done with this, a snapshot will be taken,
meaning there's no need to communicate with the backend anymore. Closing
the communication is needed to let the destination VM being able to
connect to the same backend.
That's why we shutdown the communication with the backend in case a
migration has been started and we're asked for a snapshot.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This anticipates the need for creating a new Blk, Fs or Net object
without having performed the connection with the vhost-user backend yet.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In anticipation for creating vhost-user devices in a different way when
being restored compared to a fresh start, this commit introduces a new
boolean created by the Vm depending on the use case, and passed down to
the DeviceManager. In the future, the DeviceManager will use this flag
to assess how vhost-user devices should be created.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
It was incorrect to call Vec::from_raw_parts() on the address pointing
to the shared memory log region since Vec is a Rust specific structure
that doesn't directly translate into bytes. That's why we use the same
function from std::slice in order to create a proper slice out of the
memory region, which is then copied into a Vec.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that the common vhost-user code can handle logging dirty pages
through shared memory, we need to advertise it to the vhost-user
backends with the protocol feature VHOST_USER_PROTOCOL_F_LOG_SHMFD.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Correct operation of user devices (vfio-user) requires shared memory so
flag this to prevent it from failing in strange ways.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Create the vfio-user / user devices from the config. Currently hotplug
of the devices is not supported nor can they be placed behind the
(virt-)iommu.
Removal of the coldplugged device is however supported.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Taking advantage of the refactored VFIO code implement a new
VfioUserPciDevice that wraps the client for vfio-user and exposes the
BusDevice and PciDevice into the VMM.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This allows the user to specify devices that are running in a different
userspace process and communicated with vfio-user.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Implement (most) of the client side (i.e. VMM side) of the vfio-user
protocol:
https://github.com/nutanix/libvfio-user/blob/master/docs/vfio-user.rst
Items that are not implemented (because they are optimisations or unused
due to alternative solutions:
* VFIO_USER_DMA_READ/WRITE - this is a way for the server to read guest
memory if the guest memory is not shared by fd where the client
doesn't support it. However since we do support sharing the memory by
fd this is not required.
* VFIO_USER_GET_REGION_IO_FDS - an optimisation to bypass the VMM by
having KVM talk directly to the backend using ioregionfd
* VFIO_USER_DIRTY_PAGES - for the implementation of live migration
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This doesn't really affect the build as we ship a Cargo.lock with fixed
versions in. However for clarity it makes sense to use fixed versions
throughout and let dependabot update them.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
AArch64 CPU topology can be described using either device tree or
ACPI. Therefore, the integration test should also cover the AArch64
ACPI CPU topology tests.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The optional Processor Properties Topology Table (PPTT) table is
used to describe the topological structure of processors controlled
by the OSPM, and their shared resources, such as caches. The table
can also describe additional information such as which nodes in the
processor topology constitute a physical package.
The ACPI PPTT table supports topology descriptions for ACPI guests.
Therefore, this commit adds the PPTT table for AArch64 to enable
CPU topology feature for ACPI.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The Arm CPU topology is defined within the `cpu-map` node, which is
a direct child of the cpus node and provides a container where the
actual topology nodes are listed.
This commit adds an optional cpu-map node in device tree, based on
the Cloud Hypervisor command line vCPU topology information.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
In an Arm system, the hierarchy of CPUs is defined through three
entities that are used to describe the layout of physical CPUs in
the system:
- cluster
- core
- thread
All these three entities have their own FDT node field. Therefore,
This commit adds an AArch64-specific helper to pass the config from
the Cloud Hypervisor command line to the `configure_system`, where
eventually the `create_fdt` is called.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Make sure the DeviceManager is triggered for all migration operations.
The dirty pages are merged from MemoryManager and DeviceManager before
to be sent up to the Vmm in lib.rs.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that Migratable provides the methods for starting, stopping and
retrieving the dirty pages, we move the existing code to these new
functions.
No functional change intended.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This patch connects the dots between the vm.rs code and each Migratable
device, in order to make sure Migratable methods are correctly invoked
when migration happens.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding the common vhost-user code for starting logging dirty pages when
the migration is started, and its counterpart for stopping, as well as
the code in charge of retrieving the bitmap of the dirty pages that have
been logged.
All these functions are meant to be leveraged from vhost-user devices.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding a simple field `migration_support` to VhostUserHandle in order to
store the information about the device supporting migration or not. The
value of this flag depends on the feature set negotiated with the
backend. It's considered as supporting migration if VHOST_F_LOG_ALL is
present in the virtio features and if VHOST_USER_PROTOCOL_F_LOG_SHMFD is
present in the vhost-user protocol features.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add new methods to the Migratable trait so that each device implementing
this trait can be notified when the migration starts/stops, as well as
when a dirty bitmap must be returned.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In anticipation for supporting the merge of multiple dirty pages coming
from multiple devices, this patch factorizes the creation of a
MemoryRangeTable from a bitmap, as well as providing a simple method for
merging the dirty pages regions under a single MemoryRangeTable.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Replacing QCOW mentions with other viable options. There is still
docs/custom-image.md which talks about creating QCOW, however it
might be more convenient to be touched when the actual changes
are indeed there.
Related to #1985.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
These crates are written to produce log messages using the error!
macro, but their logs didn't actually go anywhere, which made it very
difficult to debug when they're not working.
I've used env_logger here because it's the same log implementation
that the hypervisor crate uses.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
I don't think the min_values(1) was doing anything, since
takes_value(true) was already set, and after this change I still get
an error if I try to supply the argument with no value.
But the unwrap below would fail if the argument wasn't supplied at
all. By setting required(true) we get a nice message from clap
instead.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
After the refactoring to split the common VFIO code out for vfio-user
there were some inconsistencies in the error handling. Correct this so
that the error is independent of the transport (hardware vs user) VFIO
and migrate to anyhow/thiserror in the process. Some unused errors from
earlier refactoring have also been removed.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Returning a reference is not possible for the vfio-user code as it is
constructed for the function.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rename the wrapper trait and structs since this will be used for more
than reading the PCI config.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This allows the code to be used from a different module in the same
crate for vfio-user support.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Split data that will need to be common between VfioPciDevice and
VfioUserPciDevice into a common struct. Currently this has no methods
but they will be added soon.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By splitting this into a trait with common code extracted then this
will allow extensive reuse of logic in the vfio-user version.
This commit also changed the order of parameters on
::write_config_dword() to place offset first to match the other
functions.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Moving the MSHV crate form Cloud Hypervisor to rust-vmm
is done. This patch update the MSHV referent to rust-vmm
Signed-off-by: Muminul Islam <muislam@microsoft.com>
backend like SPDK required to know how many virt queues to be handled
before gets VHOST_USER_SET_INFLIGHT_FD message.
fix dpdk core dump while processing vhost_user_set_inflight_fd:
#0 0x00007fffef47c347 in vhost_user_set_inflight_fd (pdev=0x7fffe2895998, msg=0x7fffe28956f0, main_fd=545) at ../lib/librte_vhost/vhost_user.c:1570
#1 0x00007fffef47e7b9 in vhost_user_msg_handler (vid=0, fd=545) at ../lib/librte_vhost/vhost_user.c:2735
#2 0x00007fffef46bac0 in vhost_user_read_cb (connfd=545, dat=0x7fffdc0008c0, remove=0x7fffe2895a64) at ../lib/librte_vhost/socket.c:309
#3 0x00007fffef45b3f6 in fdset_event_dispatch (arg=0x7fffef6dc2e0 <vhost_user+8192>) at ../lib/librte_vhost/fd_man.c:286
#4 0x00007ffff09926f3 in rte_thread_init (arg=0x15ee180) at ../lib/librte_eal/common/eal_common_thread.c:175
Signed-off-by: Arafatms <arafatms@outlook.com>
This patch adds all the seccomp rules missing for MSHV.
With this patch MSFT internal CI runs with seccomp enabled.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This patch adds a fallback path for sending live migration, where it
ensures the following behavior of source VM post live-migration:
1. The source VM will be paused only when the migration is completed
successfully, or otherwise it will keep running;
2. The source VM will always stop dirty pages logging.
Fixes: #2895
Signed-off-by: Bo Chen <chen.bo@intel.com>
The vhost-user-net backend needs to prepare all queues before enabling vring.
For example, DPVGW will report 'the RX queue can't find' error, if we enable
vring immediately after kicking it out.
Signed-off-by: Arafatms <arafatms@outlook.com>
This rule is needed to boot windows guest.
This bug was introduced while we tried to boot
windows guest on MSHV.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This patch modify the existing live migration code
to support MSHV. Adds couple of new functions to enable
and disable dirty page tracking. Add missing IOCTL
to the seccomp rules for live migration.
Adds necessary flags for MSHV.
This changes don't affect KVM functionality at all.
In order to get better performance it is good to
enable dirty page tracking when we start live migration
and disable it when the migration is done.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Right now, get_dirty_log API has two parameters,
slot and memory_size.
MSHV needs gpa to retrieve the page states. GPA is
needed as MSHV returns the state base on PFN.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Now that vhost-user supports being snapshot and restored, we extend the
existing test_ovs_dpdk to validate snapshot/restore feature works as
expected.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding the support for snapshot/restore feature for all supported
vhost-user devices.
The complexity of vhost-user-fs device makes it only partially
compatible with the feature. When using the DAX feature, there's no way
to store and remap what was previously mapped in the DAX region. And
when not using the cache region, if the filesystem is mounted, it fails
to be properly restored as this would require a special command to let
the backend know that it must remount what was already mounted before.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This patch moves all vhost-user common functions behind a new structure
VhostUserHandle. There is no functional changes intended, the only goal
being to prepare for storing information through this new structure,
limiting the amount of parameters that are needed for each function.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We didn't implement the vhost-user-net backend to support EVENT_IDX
feature, hence it is incorrect to advertise VIRTIO_RING_F_EVENT_IDX to
the VMM and the guest.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
It's totally acceptable to snapshot and restore a virtio-fs device that
has no cache region, since this is a valid mode of functioning for
virtio-fs itself.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
With the new beta version, clippy complains about redundant allocation
when using Arc<Box<dyn T>>, and suggests replacing it simply with
Arc<dyn T>.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As we are now using an global control to start/stop dirty pages log from
the `hypervisor` crate, we need to explicitly tell the hypervisor (KVM)
whether a region needs dirty page tracking when it is created.
This reverts commit f063346de3.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Following KVM interfaces, the `hypervisor` crate now provides interfaces
to start/stop the dirty pages logging on a per region basis, and asks
its users (e.g. the `vmm` crate) to iterate over the regions that needs
dirty pages log. MSHV only has a global control to start/stop dirty
pages log on all regions at once.
This patch refactors related APIs from the `hypervisor` crate to provide
a global control to start/stop dirty pages log (following MSHV's
behaviors), and keeps tracking the regions need dirty pages log for
KVM. It avoids leaking hypervisor-specific behaviors out of the
`hypervisor` crate.
Signed-off-by: Bo Chen <chen.bo@intel.com>
To support different CPUID entry semantics, we now allow to
specify the compatible condition for each feature entry. Most entries
are considered compatible when they are "bitwise subset", with few
exceptions: 1. "equal", e.g. EBX/ECX/EDX of leaf `0x4000_0000` (KVM
CPUID SIGNATURE); 2. "smaller or equal as a number", e.g. EAX of leaf
`0x7` and leaf `0x4000_0000`;
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch adds a common function "Vmm::vm_check_cpuid_compatibility()"
to be shared by both live-migration and snapshot/restore.
Signed-off-by: Bo Chen <chen.bo@intel.com>
We now send not only the 'VmConfig' at the 'Command::Config' step of
live migration, but also send the 'common CPUID'. In this way, we can
check the compatibility of CPUID features between the source and
destination VMs, and abort live migration early if needed.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Add missing option of hugepage_size in argument of memory,
and add some details about lacking huge pages.
Signed-off-by: Yu Li <liyu.yukiteru@bytedance.com>
With the support of dynamically turning on/off dirty-pages-log during
live-migration (only for guest RAM regions), we now can create guest
memory regions without dirty-pages-log by default both for guest RAM
regions and other regions backed by file/device.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch extends slightly the current live-migration code path with
the ability to dynamically start and stop logging dirty-pages, which
relies on two new methods added to the `hypervisor::vm::Vm` Trait. This
patch also contains a complete implementation of the two new methods
based on `kvm` and placeholders for `mshv` in the `hypervisor` crate.
Fixes: #2858
Signed-off-by: Bo Chen <chen.bo@intel.com>
The existing test_macvtap is factorized to be able to support both
coldplug and hotplug of a macvtap interface through virtio-net. Adding
the new test_macvtap_hotplug test allows for validating that sending a
TAP file descriptor through control message along with the add-net
command works.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
To help with readability, we rely on exec_host_command_status() from the
macvtap test, which replaces the former "bash -c ..." syntax.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Enable specifically for the add-net command the ability to send file
descriptors along with the HTTP request. This is useful to hotplug a
macvtap interface after the VMM has already been started.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Whenever a file descriptor is sent through the control message, it
requires fcntl() syscall to handle it, meaning we must allow it through
the list of syscalls authorized for the HTTP thread.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
When running TDX guest, the Guest Physical Address space is limited by
a shared bit that is located on bit 47 for 4 level paging, and on bit 51
for 5 level paging (when GPAW bit is 1). In order to keep things simple,
and since a 47 bits address space is 128TiB large, we ensure to limit
the physical addressable space to 47 bits when runnning TDX.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
When running a TDX guest, we need the virtio drivers to use the DMA API
to share specific memory pages with the VMM on the host. The point is to
let the VMM get access to the pages related to the buffers pointed by
the virtqueues.
The way to force the virtio drivers to use the DMA API is by exposing
the virtio devices with the feature VIRTIO_F_IOMMU_PLATFORM. This is a
feature indicating the device will require some address translation, as
it will not deal directly with physical addresses.
Cloud Hypervisor takes care of this requirement by adding a generic
parameter called "force_iommu". This parameter value is decided based on
the "tdx" feature gate, and then passed to the DeviceManager. It's up to
the DeviceManager to use this parameter on every virtio device creation,
which will imply setting the VIRTIO_F_IOMMU_PLATFORM feature.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This refactoring ensures all CPUID related operations are centralized in
`arch::x86_64` module, and exposes only two related public functions to
the vmm crate, e.g. `generate_common_cpuid` and `configure_vcpu`.
Signed-off-by: Bo Chen <chen.bo@intel.com>
In order to let a separate process open a TAP device and pass the file
descriptor through the control message mechanism, this patch adds the
support for sending a file descriptor over to the Cloud Hypervisor
process along with the add-net HTTP API command.
The implementation uses the NetConfig structure mutably to update the
list of fds with the one passed through control message. The list should
always be empty prior to this, as it makes no sense to provide a list of
fds once the Cloud Hypervisor process has already been started.
It is important to note that reboot is supported since the file
descriptor is duplicated upon receival, letting the VM only use the
duplicated one. The original file descriptor is kept open in order to
support a potential reboot.
Fixes#2525
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There are some seccomp rules needed for MSHV
in virtio-devices but not for KVM. We only want to
add those rules based on MSHV feature guard.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The micro-http crate now uses recvmsg() syscall in order to receive file
descriptors through control messages. This means the syscall must be
part of the authorized list in the seccomp filters.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The vfio-ioctls crate now contains a KVM feature gate. Make use of it in
Cloud Hypervisor.
That crate has two users. For the vmm crate is it straight-forward. For
the vm-device crate, we introduce a KVM feature gate as well so that the
vmm crate can pass on the configuration.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The help of arguments `memory` and `memory-zone` missing a comma.
Before adding, these parts are as follows:
> hugepage_size=<hugepage_size>hotplug_method=acpi|virtio-mem
After adding, these parts will be:
> hugepage_size=<hugepage_size>,hotplug_method=acpi|virtio-mem
Signed-off-by: Yukiteru Lee <wfly1998@sina.com>
The edk2 upstream has already suppoorted AArch64 Cloud Hypervisor,
and hence we can use upstream edk2 in CI and doc.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This new option allows the user to define a list of SGX EPC sections
attached to a specific NUMA node.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to uniquely identify each SGX EPC section, we introduce a
mandatory option `id` to the `--sgx-epc` parameter.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Enabling CONFIG_HYPERV in the Linux Kernel allows
guest to use hyperv clock source. This changes
improves guest performance. Without this changes
we saw slowness in the guest on MSHV.
Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The guest can see that SGX supports provisioning as it is exposed
through the CPUID. This patch enables the proper backing of this
feature by having the host open the provisioning device and enable
this capability through the hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We need a dedicated function to enable the SGX attribute capability
through the Hypervisor abstraction.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The cloud hypervisor tells the VM and the backend to support the PACKED_RING feature,
but it actually processes various variables according to the split ring logic, such
as last_avail_index. Eventually it will cause the following error (SPDK as an example):
vhost.c: 516:vhost_vq_packed_ring_enqueue: *ERROR*: descriptor has been used before
vhost_blk.c: 596:process_blk_task: *ERROR*: ====== Task 0x200113784640 req_idx 0 failed ======
vhost.c: 629:vhost_vring_desc_payload_to_iov: *ERROR*: gpa_to_vva((nil)) == NULL
Signed-off-by: Arafatms <arafatms@outlook.com>
This patch fixes a few things to support TDVF correctly.
The HOB memory resources must contain EFI_RESOURCE_ATTRIBUTE_ENCRYPTED
attribute.
Any section with a base address within the already allocated guest RAM
must not be allocated.
The list of TD_HOB memory resources should contain both TempMem and
TdHob sections as well.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If GICR_CTLR is restored before GICR_PROPBASER and GICR_PENDBASER,
the restoring of the latter registers will fail, as the LPI enable
bit is already set in GICR_CTLR. Therefore, in this commit, the
order of restoring GICR registers is changed.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
This commit implements the GicV3Its Snapshottable trait, including:
- GicV3Its state: GIC registers and ITS registers
- Save/restore logic of GicV3Its state
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit implements two helper functions `gicv3_its_attr_access`
and `gicv3_its_tables_access` to access ITS device attributes and
ITS tables.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
In current code, the ITS device fd of GICv3 will be lost after the
creation of GIC. This commit adds a new `its_device` field for the
`GicV3Its` struct, which will be useful to save the ITS device fd.
This fd will be used in restoring the ITS device.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The BAR calculation code was incorrect for calculating I/O BARs but also
has misleading comments (mixing bits and bytes, first and least
significant, etc).
This change adjusts the algorithm to more closely match the version
described in the PCI specification and takes advantage of Rust's binary
literals for ease of reading. Although this is slightly longer by
calculating the 64-bit and 32-bit paths separately I think this is
easier to read.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Previously the same function was used to both create and remove regions.
This worked on KVM because it uses size 0 to indicate removal.
MSHV has two calls -- one for creation and one for removal. It also
requires having the size field available because it is not slot based.
Split set_user_memory_region to {create/remove}_user_memory_region. For
KVM they still use set_user_memory_region underneath, but for MSHV they
map to different functions.
This fixes user memory region removal on MSHV.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The to-be-introduced MSHV rules don't need to contain KVM rules and vice
versa.
Put KVM constants into to a module. This avoids the warnings about
dead code in the future.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The TX rate limiter didn't correctly handle the `-EAGAIN` situation
where it should replenish the rate-limiter tokens. This patch simplifies
the TX rate-limiter code path by following the similar trade-off made in
the TX rate limiter, where we always let the `last` descriptor
go-through (even if it was over the rate limit. We simply stop
processing the oncoming `descriptors` if any.
Fixes: #2817
Signed-off-by: Bo Chen <chen.bo@intel.com>
This warning isn't present on on the read case and we now have better
handling of the -EAGAIN situation including retries.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
If writing to the TAP returns EAGAIN then listen for the TAP to be
writable. When the TAP becomes writable attempt to process the TX queue
again.
Fixes: #2807
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The output from getty ("login:") does not always appear. This can be
observed interactively when booting the VM. (Mashing return will bring
it up.) Instead of checking for that string to ensure the VM has booted
instead check for a message from systemd to say it has started the SSH
daemon.
Fixes: #2799
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
warning: use of `expect` followed by a function call
--> test_infra/src/lib.rs:598:10
|
598 | .expect(&format!("Expected '{}' to run", command))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Expected '{}' to run", command))`
|
= note: `#[warn(clippy::expect_fun_call)]` on by default
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
warning: use of `expect` followed by a function call
--> test_infra/src/lib.rs:605:10
|
605 | .expect(&format!("Expected '{}' to run", command))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Expected '{}' to run", command))`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit introduces the `ProcessorGiccAffinity` struct for the
AArch64 platform. This struct will be created and included into
the SRAT table to enable AArch64 NUMA setup.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This vcpu API is necessary for MSHV related debugging.
These two registers controls the vcpu_run in the
/dev/mshv driver code.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
It ensures all handlers for `ApiRequest` in `control_loop` are
consistent and minimum and should read better.
No functional changes.
Signed-off-by: Bo Chen <chen.bo@intel.com>
It simplifies a bit the `Vmm::control_loop` and reads better to be
consistent with other `ApiRequest` handlers. Also, it removes the
repetitive `ApiError::VmAlreadyCreated` and makes `ApiError::VmCreate`
useful.
No functional changes.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Simplified the build instruction on arm64.
And the binary built with default option can be used for both UEFI and
direct-kernel test.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
AArch64 tests were divided into 2 steps:
- Build and test with 'acpi' feature
- Build and test without 'acpi'
This can be optimized. We need only to build and test once with default
features ('acpi' is enabled).
On AArch64, ACPI only works with UEFI. If UEFI is not available, guest
kernel fall back to use FDT. Most AArch64 test cases boot from direct
kernel, the guest will keep using FDT even if ACPI is enabled. So
nothing is broken.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
We have been building Cloud Hypervisor with command like:
`cargo build --no-default-features --features ...`.
After implementing ACPI, we donot have to use specify all features
explicitly. Default build command `cargo build` can work.
This commit fixed some build warnings with default build option and
changed github workflow correspondingly.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
UEFI need to be loaded to a flash area at the beginning of guest memory
address space. To simulate the flash, we take a piece of RAM and hide
it to the guest. As this is a temporary solution, the hiden RAM for UEFI
should be as little as possible. The size was 64 MiB, that's too much,
4 MiB is enough.
The down side of such simulation is that there is a gap (4 MiB) between
the memory size in VMM's view and that in guest's view. This is to be
fixed by implementing a flash device in future.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This dependency bump needed some manual handling since the API changed
quite a lot regarding some RawFd being changed into either File or
AsRawFd traits.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
error: avoid using `collect()` when not needed
--> vmm/src/vm.rs:630:86
|
630 | let node_id_list: Vec<u32> = configs.iter().map(|cfg| cfg.guest_numa_id).collect();
| ^^^^^^^
...
664 | if !node_id_list.contains(&dest) {
| ---------------------------- the iterator could be used here instead
|
= note: `-D clippy::needless-collect` implied by `-D warnings`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_collect
Signed-off-by: Bo Chen <chen.bo@intel.com>
Issue from beta verion of clippy:
Error: --> vm-virtio/src/queue.rs:700:59
|
700 | if let Some(used_event) = self.get_used_event(&mem) {
| ^^^^ help: change this to: `mem`
|
= note: `-D clippy::needless-borrow` implied by `-D warnings`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
Signed-off-by: Bo Chen <chen.bo@intel.com>
Issue from beta verion of clippy:
error: field is never read: `type`
--> vmm/src/cpu.rs:235:5
|
235 | pub r#type: u8,
| ^^^^^^^^^^^^^^
|
= note: `-D dead-code` implied by `-D warnings`
Signed-off-by: Bo Chen <chen.bo@intel.com>
Initialize MTRR defType register the same way the KVM code does - WB caching by default.
Tested with latest mshv code.
Without this patch, these lines are present in guest serial log:
[ 0.000032] x86/PAT: MTRRs disabled, skipping PAT initialization too.
[ 0.000036] CPU MTRRs all blank - virtualized system.
This indicates the guest is detecting the set MTRR.
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The Linux kernel expects that any PCI devices that advertise I/O bars
have use an address that is within the range advertised by the bus
itself. Unfortunately we were not advertising any I/O ports associated
with the PCI bus in the ACPI tables.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This patch addresses this issue https://github.com/rust-lang/rust-bindgen/pull/2064.
While we access field of packed struct the compiler can generate the
correct code to create a temporary variable to access the packed struct
field. Access withing {} ensures that.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The virtio_balloon test is a bit flaky since we can't really know how
much the balloon is gonna be deflated when the guest is under memory
pressure. That's why it's safer to simply check that the balloon is not
the initial size anymore.
One small detail, but we don't need to check for the balloon size to be
higher than 0 since the returned value is a u64.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we ran into issues while using the Azure credentials plugin for
Jenkins, let's rely directly on the Azure CLI to download the Windows
guest image along with the modified OVMF firmware.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
To debug the FDT (Flattened Device Tree), we usually need to modify
source code to save the generted DTB data to disk, and use 'dtc' command
to decode the binary file into a text file to analyze.
It would be ideal if the FDT content can be seen in log.
This commit makes it real by:
- Introducing 'fdt' crate for parsing FDT.
- Printing the content of the FDT in tree view.
The parsing and printing only happen when Debug level logging enabled.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Additionally, he disk creation routine is extended to support NTFS and
variable image size.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
In order to allow a hotplugged vCPU to be assigned to the correct NUMA
node in the guest, the DSDT table must expose the _PXM method for each
vCPU. This method defines the proximity domain to which each vCPU should
be attached to.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The _PXM method always return 0, which is wrong since the SRAT might
tell differently. The point of the _PXM method is to be evaluated by the
guest OS when some new memory slot is being plugged, but this will never
happen for Cloud Hypervisor since using NUMA nodes along with memory
hotplug only works for virtio-mem.
Memory hotplug through ACPI will only happen when there's only one NUMA
node exposed to the guest, which means the _PXM method won't be needed
at all.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Make sure the unique PCI bus is tied to the default NUMA node 0, and
update the documentation to let the users know about this special case.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Fixed wrong MPIDR value setting for VCPUs in FDT.
The wrong setting made only 16 VCPUs can be enabled at most, all other
VCPUs were showing off-line.
The issue was introduced when we were migrating FDT-generating code to
vmm-fdt crate.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Now that vhost crate allows the caller to set the header flags, we can
set NEED_REPLY whenever the REPLY_ACK protocol feature is supported from
both ends.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The new test_virtio_balloon() is to verify if the 'deflate_on_oom'
parameter works. Its testing result is as follows:
1. Start a 4G guest with 2G balloon, check memory once starts up.
total_mem is 4294967296 bytes
actual_mem is 2147483648 bytes
orig_balloon is 2147483648 bytes
total used free shared buff/cache available
Mem: 3.8Gi 2.1Gi 1.6Gi 0.0Ki 140Mi 1.6Gi
Swap: 0B 0B 0B
2. Run a command in guest to eat up 25G memory, and check again.
total_mem is 4294967296 bytes
actual_mem is 3121610752 bytes
deflated_balloon is 1173356544 bytes
total used free shared buff/cache available
Mem: 3.8Gi 1.2Gi 2.6Gi 0.0Ki 49Mi 2.5Gi
Swap: 0B 0B 0B
From above, we can notice the balloon memory indeed deflates from
2147483648 bytes to 1173356544 bytes once an oom is going to be
triggered.
Signed-off-by: Fei Li <lifei.shirley@bytedance.com>
For vhost-user devices, memory should be shared between CLH and
vhost-user backend. However, madvise DONTNEED doesn't working in
this case. So, let's use fallocate PUNCH_HOLE to discard those
memory regions instead.
Signed-off-by: Li Hangjing <lihangjing@bytedance.com>
Sometimes we need balloon deflate automatically to give memory
back to guest, especially for some low priority guest processes
under memory pressure. Enable deflate_on_oom to support this.
Usage: --balloon "size=0,deflate_on_oom=on" \
Signed-off-by: Fei Li <lifei.shirley@bytedance.com>
Since using the VIRTIO configuration to expose the virtual IOMMU
topology has been deprecated, the virtio-iommu implementation must be
updated.
In order to follow the latest patchset that is about to be merged in the
upstream Linux kernel, it must rely on ACPI, and in particular the newly
introduced VIOT table to expose the information about the list of PCI
devices attached to the virtual IOMMU.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since the reconnection thread took on the responsibility to handle
backend initiated requests as well, the variable naming should reflect
this by avoiding the "reconnect" prefix.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
A new method has been introduced for WindowsGuest, that would poll on
the SSH connection and try to execute a test command. When successfull,
the polling stops and the guest is considered finished boot. The
downside of this method is that the network setup is needed always even
if the test doesn't use network, however it complies with the behavior
of other tests. I also observe a bit more stability on the local test
run, however it still appears to be a resource issue so some sporadic
fails are possible on a slower machine.
The hardcoded timeouts for guest boot and DHCP setup have been removed.
The dnsmasq invocation uses `--bind-dynamic` so then the daemon can be
started while the target interface could be down yet.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Co-authored-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Vhost user INFLIGHT_SHMFD protocol feature supports inflight I/O
tracking, this commit implement the vhost-user device (master) support
of the feature. Till this commit, specific vhost-user devices (blk, fs,
or net) have not enable this feature.
Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
Add the support for reconnecting the backend request handler after a
disconnection/crash happened.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since the slave request handler is common to all vhost-user devices, the
same way the reconnection is, it makes sense to handle the requests from
the backend through the same thread.
The reconnection thread now handles both a reconnection as well as any
request coming from the backend.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit enables socket reconnection for vhost-user-fs backends. Note
that, till this commit:
- The re-establish of the slave communication channel is no supported. So
the socket reconnection does not support virtiofsd with DAX enabled.
- Inflight I/O tracking and restoring is not supported. Therefore, only
virtio-fs daemons that are not processing inflight requests can work
normally after reconnection.
- To make the restarted virtiofsd work normally after reconnection, the
internal status of virtiofsd should also be recovered. This is not the
work of cloud-hypervisor. If the virtio-fs daemon does not support
saving or restoring its internal status, then a re-mount in guest after
socket reconnection should be performed.
Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
With the ability of getting host IPA size in `hypervisor` crate,
we can query the host IPA size through ioctl instead of hardcoding
a maximum IPA size. Therefore this commit removes the hardcoded
maximum host IPA size.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Not all AArch64 platforms support IPAs up to 40 bits. Since the
kvm-ioctl crate now supports `get_host_ipa_limit` for AArch64,
when creating the VM, it is better to get the IPA size from the
host and use that to create the VM.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit adds a helper `get_host_ipa_limit` to the AArch64
`KvmHypervisor` struct. This helper can be used to get the
`Host_IPA_Limit`, which is the maximum possible value for
IPA_Bits on the host and is dependent on the CPU capability
and the kernel configuration.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
test_aarch64_pe_boot was added at the very beginning of AArch64 support.
Now it can be combined to test_vmlinux_boot.
Renamed test_vmlinux_boot to test_direct_kernel_boot for generality.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Enabled test case test_vmlinux_boot_noacpi on AArch64 and renamed it
test_direct_kernel_boot_noacpi for generality.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Some new integration tests will require the "stress" binary to be
present in the guest in order to run correctly.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit added support for building the edk2 binary dedicated
for the Cloud Hypervisor (CLOUDHV_EFI.fd).
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
EDK2 requires the beginning of PCIe high space above 4G address.
In CLH the space follows the RAM. If the RAM space is small, the PCIe
high space could fall bellow 4G.
Here we put it above 512G in FDT to workaround the EDK2 check only when
ACPI is enabled, because EDK2 collects PCIe information from FDT.
The address written in ACPI is not impacted.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Implemented an architecture specific function for loading UEFI binary.
Changed the logic of loading kernel image:
1. First try to load the image as kernel in PE format;
2. If failed, try again to load it as formatless UEFI binary.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
_DSM (Device Specific Method) is a control method that enables devices
to provide device specific control functions. Linux kernel will evaluate
this device then initialize preserve_config in acpi pci initialization.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
Re-enable virtiofsd testing now that issues with capstone repository
have been resolved.
This reverts commit a14c70019a.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This new function allows for better readability of the code by
factorizing a few of lines of code into a single one.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
It's important to verify the actual exit code returned from the new
function exec_host_command_status() to ensure the command ran
successfully.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This new function allows for better readability of the code by
factorizing a bunch of lines of code into a single one.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There's no need for ssh_command_ok() anymore since ssh_command() now
returns an error in case the executed command returned with an exit code
different than 0.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit enables socket reconnection for vhost-user-blk backends.
Note that, till this commit, inflight I/O trakcing and restoring is not
supported. Therefore, only vhost-user-blk backend that are not processing
inflight requests can work normally after reconnection.
Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
We should try to read the last avail index from the vring memory aera. This
is necessary when handling vhost-user socket reconnection.
Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
Make sure the reconnection functionaliity is well tested from the OVS
DPDK integration test.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to simplify and speed up the OVS DPDK test, we switch from
using 'iperf3' to 'netcat' to validate the connectivity is functional.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since OVS DPDK deprecated the use for the server mode, let's make sure
the integration test uses the client mode instead. This means the OVS
backend is the client and the VMM acts as the server, therefore the
reason why we use "vhost_mode=server".
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Re-enable the OVS DPDK integration test by assigning both VMs to the
NUMA node 0. This ensures the processes are being run on NUMA node 0,
preventing OVS DPDK from abnormal functioning.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As discussed in the working PR in the upstream vm-memory crate repo,
some special functions (e.g. return raw pointers to the wrapped guest
memory) require manual dirty page tracking from their users (e.g.the
VMM). One of the special functions is `VolatileSlice::as_ptr(), which is
used in our code base for supporting async block I/O. This patch
manually mark dirty for guest pages touched while reading from block
devices.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Live migration currently handles guest memory writes from the guest
through the KVM dirty page tracking and sends those dirty pages to the
destination. This patch augments the live migration support with dirty
page tracking of writes from the VMM to the guest memory(e.g. virtio
devices).
Fixes: #2458
Signed-off-by: Bo Chen <chen.bo@intel.com>
Function "GuestMemory::with_regions(_mut)" were mainly temporary methods
to access the regions in `GuestMemory` as the lack of iterator-based
access, and hence they are deprecated in the upstream vm-memory crate [1].
[1] https://github.com/rust-vmm/vm-memory/issues/133
Signed-off-by: Bo Chen <chen.bo@intel.com>
As the first step to complete live-migration with tracking dirty-pages
written by the VMM, this commit patches the dependent vm-memory crate to
the upstream version with the dirty-page-tracking capability. Most
changes are due to the updated `GuestMemoryMmap`, `GuestRegionMmap`, and
`MmapRegion` structs which are taking an additional generic type
parameter to specify what 'bitmap backend' is used.
The above changes should be transparent to the rest of the code base,
e.g. all unit/integration tests should pass without additional changes.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Add a helper to VirtioCommon which returns duplicates of the EventFds
for kill and pause event.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The control queue was missing rt_sigprocmask syscall, which was causing
a crash when the VM was shutdown.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The CI is failing due the git server that the submodules required for
this fork of QEMU need to build from is unavailable.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
(cherry picked from commit 2aec0a92a5)
When in client mode, the VMM will retry connecting the backend for a
minute before giving up.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The reconnection code is moved to the vhost-user module as it is a
common place to be shared across all vhost-user devices.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit implements the reconnection feature for vhost-user-net in
case the connection with the backend is shutdown.
The guest has no knowledge about what happens when a disconnection
occurs, which simplifies the code to handle the reconnection. The
reconnection happens with the backend, and the VMM goes through the
vhost-user setup once again.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
After adding "get_interrupt_controller()" function in DeviceManager,
"enable_interrupt_controller()" became redundant, because the latter
one is the a simple wrapper on the interrupt controller.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
The function used to calculate "gicr-typer" value has nothing with
DeviceManager. Now it is moved to AArch64 specific files.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
In order to avoid regression regarding OVS-DPDK support, a new
integration test is added. This test consists of running two VMs, both
attached to a distinct OVS port, where both ports are connected to an
OVS bridge. Once the VM are running, the test validates the connection
between the two VMs works correctly.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding a new function ssh_command_ok() as a wrapper around the existing
ssh_command() function. The goal being to identify if the command
returned without any error.
This new function allow for a bit of factorization through the codebase.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The Dockerfile is extended with some new instructions to install the
OVS-DPDK packages. This will be useful for writing new integration tests
and make sure OVS-DPDK is working properly.
This also updates the Rust toolchain from 1.51.0 to 1.52.1.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We recently realized the control queue is not meant to be handled by the
backend, that's why we move it out of vhost-user-net implementation.
Revert "vhost_user_net: Handle control queue"
This reverts commit af88ff1c49.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We thought we could move the control queue to the backend as it was
making some good sense. Unfortunately, doing so was a wrong design
decision as it broke the compatibility with OVS-DPDK backend.
This is why this commit moves the control queue back to the VMM side,
meaning an additional thread is being run for handling the communication
with the guest.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
A lot of the VIRTIO reserved features should be supported or not by the
vhost-user backend. That means on the VMM side, these features should be
available, so that they don't get lost during the negotiation.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
On FDT, VMM can allocate IRQ from 0 for devices.
But on ACPI, the lowest range below 32 has to be avoided.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit enables the PSCI (Power State Coordination Interface)
for the AArch64 platform, which allows the VMM to manage the power
status of the guest. Also, multiple vCPUs can be brought up using
PSCI.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit implements the IO Remapping Table (IORT) for AArch64.
The IORT is one of the required ACPI table for AArch64, since
it describes the GICv3ITS node.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit implements an AArch64-required ACPI table: Serial
Port Console Redirection Table (SPCR). The table provides
information about the configuration and use of the serial port
or non-legacy UART interface.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit implements an AArch64-specific ACPI table: Generic
Timer Description Table (GTDT). The GTDT provides OSPM with
information about a system’s Generic Timers configuration.
The Generic Timer (GT) is a standard timer interface implemented
on ARM processor-based systems.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Added the final PCI bus number in MCFG table. This field is mandatory on
AArch64. On X86 it is optional.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Simplified definition block of CPU's on AArch64. It is not complete yet.
Guest boots. But more is to do in future:
- Fix the error in ACPI definition blocks (seen in boot messages)
- Implement CPU hot-plug controller
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
The VIRTIO features should not be set before they are acked from the
guest. This code was only present to overcome a vhost crate limitation
that was expecting the VIRTIO features to be set before we could fetch
and set the protocol features.
The vhost crate has been recently fixed by removing the limitation,
therefore there's no need for this workaround in the Cloud Hypervisor
codebase anymore.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Everything that was shared in the net_util.rs file has been now moved to
the net_util crate. The only remaining bit was only used by the
virtio-net implementation, that is why this commit moves this code to
virtio-net, and since there's nothing left in net_util.rs, it can be
removed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since the net_util crate contains the common code needed for processing
the control queue, let's use it and remove the duplicate from inside the
virtio-devices crate.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Moving helpers to the net_util crate since we don't want virtio-net
common code to be split between two places. The net_util crate should be
the only place to host virtio-net common code.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Factorize the virtio features and vhost-user protocol features
negotiation through a common function that blk, fs and net
implementations can directly rely on.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Make sure the virtio features are set upon device activation. At the
time the device is activated, we know the guest acknowledged the
features, which mean it's safe to set them back to the backend.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extend the current list of available virtio features in order to make it
work correctly with the VMM side.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extend the current list of available virtio features in order to make it
work correctly with the VMM side.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In migration, vm object is created by new_from_migration with
NULL kvm clock. so vm.set_clock will not be called during vm resume.
If the guest using kvm-clock, the ticks will be stopped after migration.
As clock was already saved to snapshot, add a method to restore it before
vm resume in migration. after that, guest's kvm-clock works well.
Signed-off-by: Ren Lei <ren.lei4@zte.com.cn>
Connecting a restored KVM clock vm will take long time, as clock
is NOT restored immediately after vm resume from snapshot.
this is because 9ce6c3b incorrectly remove vm_snapshot.clock, and
always pass None to new_from_memory_manager, which will result to
kvm_set_clock() never be called during restore from snapshot.
Fixes: 9ce6c3b
Signed-off-by: Ren Lei <ren.lei4@zte.com.cn>
The vhost crate does not support the need_reply flag yet, meaning we
can't be sure the backend is properly setup before the guest goes on.
One can run in a race condition where the VMM enables the vring, but
never gets any acknowledgement, meaning it assumes everything went well
and finalize the virtio device activation. Once the device is seen as
ready by the guest, it keeps going by sending some messages through the
virtqueues. Problem is, if it took some time for the backend to enable
the queue, one of the backend thread might receive a kick from the guest
while the corresponding queue is not enabled. This leads to the loss of
the event as it is discarded because the queue is not enabled.
Until vhost crate allows for requests with ACK, the way to mitigate this
issue is by ignoring an event coming up on a queue that has not been
enabled.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The virtio features are negotiated and set at the time the device is
created, hence there's no need to set the features again while going
through the vhost-user setup that is performed upon queue activation.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now that the control queue is correctly handled by the backend, there's
no need to handle it as well from the VMM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The virtio-net control queue must be handled by the backend, the same
way all other queues already are.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This code is ported from the net_util.rs in virtio-devices. The point
being to move it to the net_util crate so that it can later be reused
from vhost-user-net backend.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Yet another small refactoring step for WindowsGuest
after f56471566b.
For this particular case - there's currently neither overloading nor
default argument support in Rust (except a macro or other tricky stuff),
so keep the timeout and other options default for now.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Mark it as unreachable for now in the default implementation as this is
currently only used on tdx code path which is KVM only.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Before this change, the FDT was loaded at the end of RAM. The address of
FDT was not fixed.
While UEFI (edk2 now) requires fixed address to find FDT and RSDP.
Now the FDT is moved to the beginning of RAM, which is a fixed address.
RSDP is wrote to 2 MiB after FDT, also a fixed address.
Kernel comes 2 MiB after RSDP.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
These messages are predominantly during the boot process but will also
occur during events such as hotplug.
These cover all the significant steps of the boot and can be helpful for
diagnosing performance and functionality issues during the boot.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This will make `mkfs.ntfs` available in the next image update, so then
it can be used in the tests.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Separate the population of the memory and the HOB from the TDX
initialisation of the memory so that the latter can happen after the CPU
is initialised.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Some refactoring is performed in order to always expect the irqfd to be
provided by VirtioInterrupt trait. In case no irqfd is available, we
simply fail initializing the vhost-user device. This allows for further
simplification since we can assume the interrupt will always be
triggered directly by the vhost-user backend without proxying through
the VMM. This allows for complete removal of the dedicated thread for
both block and net.
vhost-user-fs is a bit more complex as it requires the slave request
protocol feature in order to support DAX. That's why we still need the
VMM to interfere and therefore run a dedicated thread for it.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now all crates use edition = "2018" then the majority of the "extern
crate" statements can be removed. Only those for importing macros need
to remain.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This will allow progressive porting of parts of the VMM to using
versioned state. A new trait VersionMapped is introduced with a default
implementation that returns an empty VersionMap to ease implementation.
If a struct is updated the the trait will need to be fully implemented
with VersionMapped::version_map() returning a new VersionMap handling
the change.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Bump the sleep time before checking the guest RAM size from 10 to 30
seconds. This will help the VFIO baremetal CI passing more consistently.
Fixes#2606
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
error: all if blocks contain the same code at the start
--> virtio-devices/src/mem.rs:508:9
|
508 | / if plug {
509 | | let handlers =
self.dma_mapping_handlers.lock().unwrap();
|
|_____________________________________________________________________^
|
= note: `-D clippy::branches-sharing-code` implied by `-D warnings`
= help: for further information visit
https://rust-lang.github.io/rust-clippy/master/index.html#branches_sharing_code
help: consider moving the start statements out like this
|
508 | let handlers = self.dma_mapping_handlers.lock().unwrap();
509 | if plug {
|
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
error: usage of `contains_key` followed by `insert` on a `BTreeMap`
--> virtio-devices/src/iommu.rs:439:17
|
439 | / if !mappings.contains_key(&domain) {
440 | | mappings.insert(domain, BTreeMap::new());
441 | | }
| |_________________^ help: try this:
`mappings.entry(domain).or_insert_with(|| BTreeMap::new());`
|
= note: `-D clippy::map-entry` implied by `-D warnings`
= help: for further information visit
https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Issue from beta version of clippy:
--> virtio-devices/src/vsock/csm/txbuf.rs:69:34
|
69 | Box::new(unsafe {mem::MaybeUninit::<[u8;
Self::SIZE]>::uninit().assume_init()}));
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[deny(clippy::uninit_assumed_init)]` on by default
= help: for further information visit
https://rust-lang.github.io/rust-clippy/master/index.html#uninit_assumed_init
Fix backported Firecracker a8c9dffad439557081f3435a7819bf89b87870e7.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
error: reference to packed field is unaligned
--> virtio-devices/src/vhost_user/fs.rs:85:21
|
85 | fs.flags[i].bits() as i32,
| ^^^^^^^^^^^
|
= note: `-D unaligned-references` implied by `-D warnings`
= warning: this was previously accepted by the compiler but is being
phased out; it will become a hard error in a future release!
= note: for more information, see issue #82523
<https://github.com/rust-lang/rust/issues/82523>
= note: fields of packed structs are not properly aligned, and
creating a misaligned reference is undefined behavior (even if that
reference is never dereferenced)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Regernating the bindings required some minor changes to accomodate
changes around the accessing of unions.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Since SGX and VFIO tests don't need to be run on pull requests, we
should not have to wait for the corresponding node (bionic-sgx or
bionic-vfio) to become available in order to skip them.
Fixes#2607
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Re-enable virtiofsd testing now that issues with capstone repository
have been resolved.
This reverts commit 2aec0a92a5.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Remove unnecessary code for these structs. Moving this also allows the
removal of the arch_gen crate.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Relying on dnsmasq running on the host, the Windows guest are now
getting allocated with the expected IP addresses. This allows for
multiple VMs, therefore multiple tests to run in parallel.
The end goal is to reduce the time spent running Windows integration
tests.
Fixes#1891
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This new wrapping structure allows for a better factorization of the
Windows specific code. This makes each test simpler and easier to read.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
By using a Box around the DiskConfig trait, it becomes Sized. For that
reason, we can pass the DiskConfig to the Guest so that it can own it.
This allows for further simplification as the Guest does not need to be
bound to a specific lifetime, which makes things easier.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Updated the obsoleted instructions and scripts, based on Open vSwitch
v2.13.1, DPDK stable v19.11.3, and Cloud Hypervisor v15.0 (on Ubuntu
20.04.1).
Signed-off-by: Bo Chen <chen.bo@intel.com>
Refactor the existing vhost-user-net integration tests in order to
extend it with an extra test for vhost-user client mode.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Relying on latest changes from vhost_user_backend crate, this patch
enables the client mode support for vhost-user-net backend.
In this mode, the backend behaves as a client instead of the default
mode where it behaves as the server.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Introduce some new code to support running a vhost-user backend as a
client instead of the default server mode.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The point being to identify clearly that we're running the backend as a
server. This anticipates the addition of a new function for running the
backend as a client.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding the support for an OVS vhost-user backend to connect as the
vhost-user client. This means we introduce with this patch a new
option to our `--net` parameter. This option is called 'server' in order
to ask the VMM to run as the server for the vhost-user socket.
Fixes#1745
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In some situations (booting with OVMF) fewer queues will be enabled
therefore we should iterate over the number of enabled queues (as passed
into VirtioDevice::activate()) rather than the number of create tap
devices.
Fixes: #2578
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Create a temporary copy of the config, add the new device and validate
that. This needs to be done separately to adding it to the config to
avoid race conditions that might be result in config changes being
overwritten.
Fixes: #2564
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
To handle that devices are stored in an Option<Vec<T>> and reduce
duplicated code use generic function to add the devices to the the
struct.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Relying on guest Ubuntu image 21.04, including a 5.11 kernel, this patch
adds some additional tests to the VFIO baremetal integration tests. It
adds a test for ACPI memory hotplug, another one for virtio-mem memory
hotplug, and finally a test for hotplugging the NVIDIA card.
The existing test already taking care of the reboot has been renamed.
The script running "cargo test" has been modified to run only one thread
at a time, so that each test run sequentially. This is mandatory since
the card can't be shared across multiple VMs.
Fixes#2404
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to support most recent Ubuntu distributions, we must update
the way of detecting a reboot through the journal since there is no
more "-- Reboot --" logs.
Using the `--list-boots` option is the preferred way for getting the
boot count information from journalctl command. We simply need to add 1
to the count in order to get the reboot count.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Moving to latest Ubuntu version as the guest image is needed to move to
more recent guest kernel (5.11). With more recent kernels, we'll be able
to add hotplug and virtio-mem tests to the VFIO baremetal CI.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The CI is failing due the git server that the submodules required for
this fork of QEMU need to build from is unavailable.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The latest kvm-sgx code has renamed sgx_virt_epc device node
to sgx_vepc. Update cloud-hypervisor code and documentation to
follow this.
Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>
The Rust manifiest requires a three part version number however we
continue with our plan to use two digits so the last part will not be
used.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
test_reboot became flaky after the refactoring of the VM reboot code.
This is because we removed the ability to specify a custom timeout.
This patch fixes the issue by allowing a custom timeout of 120s to be
set.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Because the http thread no longer needs to create the api socket,
remove the socket, bind and listen syscalls from the seccomp filter.
Signed-off-by: William Douglas <william.douglas@intel.com>
Instead of using the http server's method to have it create the
fd (causing the http thread to need to support the socket, bind and
listen syscalls). Create the socket fd in the vmm thread and use the
http server's new method supporting passing in this fd for the api
socket.
Signed-off-by: William Douglas <william.douglas@intel.com>
This allows the guest to reprogram the offload settings and mitigates
issues where the Linux kernel tries to reprogram the queues even when
the feature is not advertised.
Fixes: #2528
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rather than erroring out and stalling the queue instead report an error
message if the command is invalid and return an error to the guest via
the status field.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Cleanup the control queue handling in preparation for supporting
alternative commands.
Note that this change does not make the MQ handling spec compliant.
According to the specification MQ should only be enabled once the number
of queue pairs the guest would like to use has been specified. The only
improvement towards the specication in this change is correct error
handling if the guest specifies an inappropriate number of queues (out
of range.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Factorize NVIDIA GPU checks into its own function so that it can be
reused.
Factorize linux guest reboot into its own function to reduce the amount
of code.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
With recent kernels, it is now expected to use "bind" control from the
sysfs in order to bind a specific device to the vfio-pci driver.
The use of "new_id" is still required but it is only needed once per
device type. Let's say you want to bind two virtio-net devices, you will
need to add the device_id:vendor_id pair through "new_id", while you
will be required to use "bind" for each device.
Fixes#2545
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Use the PVH vmlinux for all tests (with the exception of the specific
bzImage test.)
See: #2231
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The new kernel 5.12 requires the devices to be manually bound to
vfio-pci while adding a new_id is only needed once per
device_id:vendor_id pair.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The 5.12 kernel contains a fix for issues observed with nested snapshot
& restore.
Fixes: #2535
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
To avoid race issues where the api-socket may not be created by the
time a cloud-hypervisor caller is ready to look for it, enable the
caller to pass the api-socket fd directly.
Avoid breaking current callers by allowing the --api-socket path to be
passed as it is now in addition to through the path argument.
Signed-off-by: William Douglas <william.r.douglas@gmail.com>
Setting the tap offload should only be done based on the features that
are acked by the guest. Therefore it is incorrect to set these upon
opening the tap.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In the reference vhost_user_net backend don't advertise the offload
features. For correctness we should only advertise them if we can set
them when they are acked by the guest.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
It appears that mshv is not yet there to succeed with these tests. It is
suggested to ignore them and enable later one by one as the
functionality gets fixed.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
In order to support using Versionize for state structures it is necessary
to use simpler, primitive, data types in the state definitions used for
snapshot restore.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In order to support using Versionize for state structures it is necessary
to use simpler, primitive, data types in the state definitions used for
snapshot restore.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In order to support using Versionize for state structures it is necessary
to use simpler, primitive, data types in the state definitions used for
snapshot restore.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
If the tap file descriptor is not writable then try again later. Update
the RX side to match the test on std::io::ErrorKind::WouldBlock
Fixes: #2517
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Duplicate the fd that is specified in the config so that be used again
after a reboot. When rebooting we destroy all VM state and restore from
the config.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Windows guests read this field upon PCI device ejection. Let's make sure
we don't return an error as this is valid. We simply return an empty u32
since the ejection is done right away upon write access, which means
there's no pending ejection that might be reported to the guest.
Here is the error that was shown during PCI device removal:
ERROR:vmm/src/device_manager.rs:3960 -- Accessing unknown location at
base 0x7ffffee000, offset 0x8
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The logic wasn't quite right, as it wasn't detecting BAR reprogramming
when the upper part of the address was identical. For instance, a BAR
moved from 0x7fc0000000 to 0x7fd0000000 wasn't detected properly.
The logic has been updated and cleaned up to fix this issue, which was
observed when running Windows guests. This fixes the network hotplug
support as well.
Fixes#1797Fixes#1798
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to avoid possible issues with Bionic Beaver (18.04) as it's
getting old, we move the CI container to Focal Fossa (20.04).
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Instead of tracking on a block level of 64 pages, we are now collecting
dirty pages one by one. It improves the efficiency of dirty memory
tracking while live migration.
Signed-off-by: Bo Chen <chen.bo@intel.com>
With current serde_derive it is possible to #[derive(Serialize)] on
packed structures if they implement Copy. This allows the removal of the
manual equivalent code.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By disabling this KVM feature, we prevent the guest from using APF
(Asynchronous Page Fault) mechanism. The kernel has recently switched to
using interrupts to notify about a page being ready, but for some
reasons, this is causing unexpected behavior with Cloud Hypervisor, as
it will make the vcpu thread spin at 100%.
While investigating the issue, it's better to disable the KVM feature to
prevent 100% CPU usage in some cases.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The original code had a generic type E. It was later replaced by a
concrete type. The code should have been simplified when the replacement
happened.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
For now, memory layout on arm64 is sparse and is conflict with uefi.
Here, we do some rearrangement to let it compact and compatible with
uefi support.
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
We now reply on the value from '/sys/kernel/mm/ksm/shared_pages' to
validate our "--memory mergeable=on|off" option. For `mergeable=on`,
we are expecting to see more 'shared_pages' reported by the kernel when
we start more VMs with this option. For `mergeable=off`, we are
expecting the 'shared_pages' value to be always 0, as we are assuming
the rest of the system (in our CI) is not using mergeable memory.
Fixes: #2138
Signed-off-by: Bo Chen <chen.bo@intel.com>
The MCRS method returns a 64-bit memory range descriptor. The
calculation is supposed to be done as follows:
max = min + len - 1
However, every operand is represented not as a QWORD but as combination
of two DWORDs for high and low part. Till now, the calculation was done
this way, please see also inline comments:
max.lo = min.lo + len.lo //this may overflow, need to carry over to high
max.hi = min.hi + len.hi
max.hi = max.hi - 1 // subtraction needs to happen on the low part
This calculation has been corrected the following way:
max.lo = min.lo + len.lo
max.hi = min.hi + len.hi + (max.lo < min.lo) // check for overflow
max.lo = max.lo - 1 // subtract from low part
The relevant part from the generated ASL for the MCRS method:
```
Method (MCRS, 1, Serialized)
{
Acquire (MLCK, 0xFFFF)
\_SB.MHPC.MSEL = Arg0
Name (MR64, ResourceTemplate ()
{
QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite,
0x0000000000000000, // Granularity
0x0000000000000000, // Range Minimum
0xFFFFFFFFFFFFFFFE, // Range Maximum
0x0000000000000000, // Translation Offset
0xFFFFFFFFFFFFFFFF, // Length
,, _Y00, AddressRangeMemory, TypeStatic)
})
CreateQWordField (MR64, \_SB.MHPC.MCRS._Y00._MIN, MINL) // _MIN: Minimum Base Address
CreateDWordField (MR64, 0x12, MINH)
CreateQWordField (MR64, \_SB.MHPC.MCRS._Y00._MAX, MAXL) // _MAX: Maximum Base Address
CreateDWordField (MR64, 0x1A, MAXH)
CreateQWordField (MR64, \_SB.MHPC.MCRS._Y00._LEN, LENL) // _LEN: Length
CreateDWordField (MR64, 0x2A, LENH)
MINL = \_SB.MHPC.MHBL
MINH = \_SB.MHPC.MHBH
LENL = \_SB.MHPC.MHLL
LENH = \_SB.MHPC.MHLH
MAXL = (MINL + LENL) /* \_SB_.MHPC.MCRS.LENL */
MAXH = (MINH + LENH) /* \_SB_.MHPC.MCRS.LENH */
If ((MAXL < MINL))
{
MAXH += One /* \_SB_.MHPC.MCRS.MAXH */
}
MAXL -= One
Release (MLCK)
Return (MR64) /* \_SB_.MHPC.MCRS.MR64 */
}
```
Fixes#1800.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Simplify snapshot & restore code by using generics to specify helper
functions that take / make a Serialize / Deserialize struct
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Since using bzImage is now deprecated, let's update the SGX integration
test to rely on vmlinux instead.
Fixes#2476
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This allows the return of errors which will be printed using the
existing code and removes panic()s
Fixes: #2342
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This allows the return of errors which will be printed using the
existing code and removes panic()s
Fixes: #2342
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Both changes aim to document the absence of the CPU hot-remove
functionality on Windows.
Closes#2457.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Update the Ubuntu Focal image used as the guest image. It's based on the
latest Focal image released on April 1st 2021, and customized to include
all the utilities we need. As usual, snapd and pollinate services have
been removed.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This patch moves out the actual processing on the TX queue from the
`handle_tx_event()` function into a separate function,
e.g. `process_tx()`. This allows us to resume the TX queue processing
without reading from the TX queue EventFd, which is needed for rate
limiting support.
No functional change.
Signed-off-by: Bo Chen <chen.bo@intel.com>
To support I/O throttling on virt-net devices, we need to use the
'rate_limiter' module from the 'net_utils' crate. Given the
'virtio-devices' crate has dependency on the 'net_utils', we will need
to move the 'rate_limiter' module out of the 'virtio-devices' crate to
avoid circular dependency issue. Considering the 'rate_limiter' is not
virtio specific and could be reused for non virtio devices, we move it
to its own crate.
Signed-off-by: Bo Chen <chen.bo@intel.com>
DescriptorChain::is_valid() wrongly used .checked_offset() to attempt to
validate that the descriptor's data is in valid memory. This works in
all cases except where the guest has placed the data at the very end of
the guest memory as the offset + offset will be outside the range (as
the combined offset will be the next byte and as such out of the guest
memory). Instead use the function .check_range() takes an offset and a
length to validate
This fixes issues see with error messages featuring the
DescriptorChainTooShort error.
Fixes: #2424
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Fixes the current codebase so that every cargo clippy can be run with
the beta toolchain without any error.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There are two parts:
- Unconditionally zero the output area. The length of the incoming
vector has been seen from 1 to 4 bytes, even though just the first
byte might need to be handled. But also, this ensures any possibly
unhandled offset will return zeroed result to the caller. The former
implementation used an I/O port which seems to behave differently from
MMIO and wouldn't require explicit output zeroing.
- An access with zero offset still takes place and needs to be handled.
Fixes#2437.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
On nightly, clippy expects the structs to be constructed with fields in
the same order they're declared in. Seems sensible enough, so let's do
that.
Signed-off-by: Gaelan Steele <gbs@canishe.com>
The following is from the Hyper-V specification v6.0b.
Cpuid leaf 0x40000003 EDX:
Bit 3: Support for physical CPU dynamic partitioning events is
available.
When Windows determines to be running under a hypervisor, it will
require this cpuid bit to be set to support dynamic CPU operations.
Cpuid leaf 0x40000004 EAX:
Bit 5: Recommend using relaxed timing for this partition. If
used, the VM should disable any watchdog timeouts that
rely on the timely delivery of external interrupts.
This bit has been figured out as required after seeing guest BSOD
when CPU hotplug bit is enabled. Race conditions seem to arise after a
hotplug operation, when a system watchdog has expired.
Closes#1799.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
2021-03-26 14:06:51 +01:00
265 changed files with 42270 additions and 26160 deletions
Cloud Hypervisor is an open source project licensed under the [Apache v2 License](https://opensource.org/licenses/Apache-2.0) and the [BSD 3 Clause](https://opensource.org/licenses/BSD-3-Clause) license.
Cloud Hypervisor is an open source project licensed under the [Apache v2
License](https://opensource.org/licenses/Apache-2.0) and the [BSD 3
sh 'scripts/dev_cli.sh tests --metrics -- -- --report-file /root/workloads/metrics.json'
}
}
stage ('Upload metrics report') {
steps {
sh 'curl -X PUT https://cloud-hypervisor-metrics.azurewebsites.net/api/publishmetrics -H "x-functions-key: $METRICS_PUBLISH_KEY" -T ~/workloads/metrics.json'
}
}
}
}
}
}
}
post {
regression {
script {
if (env.BRANCH_NAME == 'master') {
slackSend (color: '#ff0000', message: '"master" branch build is now failing')
if (env.BRANCH_NAME == 'main') {
slackSend (color: '#ff0000', message: '"main" branch build is now failing')
}
}
}
fixed {
script {
if (env.BRANCH_NAME == 'master') {
slackSend (color: '#00ff00', message: '"master" branch build is now fixed')
if (env.BRANCH_NAME == 'main') {
slackSend (color: '#00ff00', message: '"main" branch build is now fixed')
}
}
}
@@ -245,3 +383,22 @@ def cancelPreviousBuilds() {
}
}
}
def installAzureCli() {
sh "sudo apt install -y ca-certificates curl apt-transport-https lsb-release gnupg"
sh "curl -sL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/microsoft.gpg > /dev/null"
sh "echo \"deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli/ focal main\" | sudo tee /etc/apt/sources.list.d/azure-cli.list"
- [1. What is Cloud Hypervisor?](#1-what-is-cloud-hypervisor)
- [Objectives](#objectives)
- [High Level](#high-level)
- [Architectures](#architectures)
- [Guest OS](#guest-os)
- [2. Getting Started](#2-getting-started)
- [Preparation](#preparation)
- [Install prerequisites](#install-prerequisites)
- [Clone and build](#clone-and-build)
- [Containerized builds and tests](#containerized-builds-and-tests)
- [Run](#run)
@@ -23,20 +23,29 @@
- [5. Community](#5-community)
- [Contribute](#contribute)
- [Join us](#join-us)
- [Security issues](#security-issues)
# 1. What is Cloud Hypervisor?
Cloud Hypervisor is an open source Virtual Machine Monitor (VMM) that runs on top of [KVM](https://www.kernel.org/doc/Documentation/virtual/kvm/api.txt).
The project focuses on exclusively running modern, cloud workloads, on top of a limited set of hardware architectures and platforms.
Cloud workloads refers to those that are usually run by customers inside a cloud provider. For our purposes this means modern operating systems with most I/O handled by paravirtualised devices (i.e. virtio), no requirement for legacy devices, and 64-bit CPUs.
Cloud Hypervisor is an open source Virtual Machine Monitor (VMM) that runs on
top of [KVM](https://www.kernel.org/doc/Documentation/virtual/kvm/api.txt)
hypervisor and Microsoft Hypervisor (MSHV).
Cloud Hypervisor is implemented in [Rust](https://www.rust-lang.org/) and is based on the [rust-vmm](https://github.com/rust-vmm) crates.
The project focuses on exclusively running modern, cloud workloads, on top of
a limited set of hardware architectures and platforms. Cloud workloads refers
to those that are usually run by customers inside a cloud provider. For our
purposes this means modern operating systems with most I/O handled by
paravirtualised devices (i.e. virtio), no requirement for legacy devices, and
64-bit CPUs.
Cloud Hypervisor is implemented in [Rust](https://www.rust-lang.org/) and is
based on the [rust-vmm](https://github.com/rust-vmm) crates.
## Objectives
### High Level
-KVM based
-Runs on KVM or MSHV
- Minimal emulation
- Low latency
- Low memory footprint
@@ -49,14 +58,22 @@ Cloud Hypervisor is implemented in [Rust](https://www.rust-lang.org/) and is bas
### Architectures
Cloud Hypervisor supports the `x86-64` and `AArch64` architectures. There are some small differences in functionality between the two architectures (see [#1125](https://github.com/cloud-hypervisor/cloud-hypervisor/issues/1125)).
Cloud Hypervisor supports the `x86-64` and `AArch64` architectures. There are
some small differences in functionality between the two architectures
(see [#1125](https://github.com/cloud-hypervisor/cloud-hypervisor/issues/1125)).
### Guest OS
Cloud Hypervisor supports `64-bit Linux`with support for _modern_ 64-bit Windows guests currently under development.
Cloud Hypervisor supports `64-bit Linux`and Windows 10/Windows Server 2019.
# 2. Getting Started
Below sections describe how to build and run Cloud Hypervisor on the `x86_64`
platform. For getting started on the `AArch64` platform, please refer to the
[Arm64 documentation](docs/arm64.md).
## Preparation
We create a folder to build and run `cloud-hypervisor` at `$HOME/cloud-hypervisor`
```shell
@@ -66,9 +83,9 @@ $ mkdir $CLOUDH
## Install prerequisites
You need to install some prerequisite packages in order to build and test Cloud Hypervisor.
Here, all the steps are based on Ubuntu, for other Linux distributions please replace the
package manager and package name.
You need to install some prerequisite packages in order to build and test Cloud
Hypervisor. Here, all the steps are based on Ubuntu, for other Linux
distributions please replace the package manager and package name.
@@ -171,7 +190,10 @@ Multiple arguments can be given to the `--disk` parameter.
#### Building your kernel
Cloud Hypervisor also supports direct kernel boot into a `vmlinux` ELF kernel or `bzImage`. In order to support virtio-fs and virtio-iommu we have our own development branch. You are of course able to use your own kernel but these instructions will continue with the version that we develop and test against.
Cloud Hypervisor also supports direct kernel boot into a `vmlinux` ELF kernel.
In order to support virtio-watchdog we have our own development branch. You are
of course able to use your own kernel but these instructions will continue with
Direct kernel boot to userspace should work with a rootfs from most distributions.
Direct kernel boot to userspace should work with a rootfs from most
distributions.
## Hot Plug
Cloud Hypervisor supports hotplug of CPUs, passthrough devices (VFIO),`virtio-{net,block,pmem,fs,vsock}` and memory resizing. This [document](https://github.com/cloud-hypervisor/cloud-hypervisor/blob/master/docs/hotplug.md) details how to add devices to
a running VM.
Cloud Hypervisor supports hotplug of CPUs, passthrough devices (VFIO),
`virtio-{net,block,pmem,fs,vsock}` and memory resizing. This
[document](docs/hotplug.md) details how to add devices to a running VM.
## Device Model
Details of the device model can be found in this [documentation](https://github.com/cloud-hypervisor/cloud-hypervisor/blob/master/docs/device_model.md).
Details of the device model can be found in this
[documentation](docs/device_model.md).
## TODO
We are not tracking the Cloud Hypervisor TODO list from a specific git tracked file but through
are all equal and welcome means of contribution. See the
[CONTRIBUTING](CONTRIBUTING.md) document for more details.
## Join us
Get an [invite to our Slack channel](https://join.slack.com/t/cloud-hypervisor/shared_invite/enQtNjY3MTE3MDkwNDQ4LWQ1MTA1ZDVmODkwMWQ1MTRhYzk4ZGNlN2UwNTI3ZmFlODU0OTcwOWZjMTkwZDExYWE3YjFmNzgzY2FmNDAyMjI)
and [join us on Slack](https://cloud-hypervisor.slack.com/).
## Security issues
Please contact the maintainers listed in the MAINTAINERS.md file with security issues.
$ qemu-img convert -p -f qcow2 -O raw focal-server-cloudimg-arm64.img focal-server-cloudimg-arm64.raw
$ popd
```
## Containerized build
## UEFI booting
If you want to build and test Cloud Hypervisor without having to install all the required dependencies, you can also turn to the development script: dev_cli.sh.
This part introduces how to build EDK2 firmware and boot Cloud Hypervisor with it.
In the context of virtualization, it is always convenient to be able to share a directory from the host with the guest.
In the context of virtualization, it is always convenient to be able to share a
directory from the host with the guest.
__virtio-fs__, also known as __vhost-user-fs__ is a virtual device defined by the VIRTIO specification which allows any VMM to perform filesystem sharing.
__virtio-fs__, also known as __vhost-user-fs__ is a virtual device defined by
the VIRTIO specification which allows any VMM to perform filesystem sharing.
## Pre-requisites
### The daemon
This virtual device relies on the _vhost-user_ protocol, which assumes the backend (device emulation) is handled by a dedicated process running on the host. This daemon is called __virtiofsd__ and needs to be present on the host.
This virtual device relies on the _vhost-user_ protocol, which assumes the
backend (device emulation) is handled by a dedicated process running on the
host. This daemon is called __virtiofsd__ and needs to be present on the host.
The `cache=none` option should be the default when using `virtiofsd` with the __cloud-hypervisor__ VMM. This prevents from using the guest page cache, which reduces the memory footprint of the guest. When running multiple virtual machines on the same host, this will let the host deal with page cache, which will increase the density of virtual machines which can be launched.
The `cache=never` option is the default when using `virtiofsd` with
Cloud Hypervisor. This prevents from using the host page cache, reducing the
overall footprint on host memory. This increases the maximum density of virtual
machines that can be launched on a single host.
The `cache=always` option will allow for the guest page cache to be used, which will increase the memory footprint of the guest. This option should be used only for specific use cases where a single VM is going to be running on a host.
The `cache=always` option will allow the host page cache to be used, which can
result in better performance for the guest's workload at the cost of increasing
the footprint on host memory.
### The kernel
### Kernel support
In order to leverage __virtio-fs__ support from within the guest, and because the code has not been merged in upstream Linux kernel yet, it is required to build a custom kernel embedding the patches.
The following branch `virtio-fs-virtio-iommu` on the repository https://github.com/cloud-hypervisor/linux.git includes all the needed patches to support __virtio-fs__.
Make sure to build a kernel out of this branch that can be then used to boot the VM.
Modern Linux kernels (at least v5.10) have support for virtio-fs. Use of older
kernels, with additional patches, are not supported.
## How to share directories with cloud-hypervisor
### Start the VM
Once the daemon is running, the option `--fs` from __cloud-hypervisor__ needs to be used.
Direct kernel boot option is preferred since we need to provide the custom kernel including the __virtio-fs__ patches. We could boot from `hypervisor-fw`if we had previously edited the image to replace the kernel binary.
Once the daemon is running, the option `--fs`from Cloud Hypervisor needs
to be used.
Because _vhost-user_ expects a dedicated process (__virtiofsd__ in this case) to be able to access the guest RAM to communicate through the _virtqueues_ with the driver running in the guest, `--memory` option needs to be slightly modified. It needs to specify a backing file for the memory so that an external process can access it.
Both direct kernel boot and EFI firmware can be used to boot a VM with
virtio-fs, given that the cloud image contains a recent enough kernel.
Assuming you have `focal-server-cloudimg-amd64.raw` and `custom-vmlinux.bin` on your system, here is the __cloud-hypervisor__ command you need to run:
Correct functioning of `--fs` requires `--memory shared=on` to facilitate
interprocess memory sharing.
Assuming you have `focal-server-cloudimg-amd64.raw` and `vmlinux` on your
system, here is the Cloud Hypervisor command you need to run:
By default, DAX is enabled with a cache window of 8GiB. You can specify a custom size (let's say 4GiB for this example) for the cache by explicitly setting DAX and the cache size:
In case you don't want to use a shared window of cache to pass the shared files content, this means you will have to explicitly disable DAX with `dax=off`. Note that in this case, the `cache_size` parameter will be ignored.
The last step is to mount the shared directory inside the guest, using the `virtiofs` filesystem type.
The last step is to mount the shared directory inside the guest, using the
`virtiofs` filesystem type.
```bash
mkdir mount_dir
mount -t virtiofs -o dax myfs mount_dir/
mount -t virtiofs myfs mount_dir/
```
The `tag` needs to be consistent with what has been provided through the __cloud-hypervisor__ command line, which happens to be `myfs` in this example.
The `-o dax` option must be removed in case the shared cache region is not enabled from the VMM.
The `tag` needs to be consistent with what has been provided through the
Cloud Hypervisor command line, which happens to be `myfs` in this example.
## DAX feature
Given the DAX feature is not stable yet from a daemon standpoint, it is not
Notice the addition of `--api-socket=/tmp/ch-socket` and a `max` parameter on `--cpus boot=4.max=8`.
Notice the addition of `--api-socket=/tmp/ch-socket` and a `max` parameter on `--cpus boot=4,max=8`.
To ask the VMM to add additional vCPUs then use the resize API:
@@ -65,7 +65,7 @@ As per adding CPUs to the guest, after a reboot the VM will be running with the
### ACPI method
Extra memory can be added from a running Cloud Hypervisor instance. This is controlled by two mechanisms:
Extra memory can be added from a running `cloud-hypervisor` instance. This is controlled by two mechanisms:
1. Allocating some of the guest physical address space for hotplug memory.
2. Making a HTTP API request to the VMM to ask for a new amount of RAM to be assigned to the VM. In the case of expanding the memory for the VM the new memory will be hotplugged into the running VM, if reducing the size of the memory then change will take effect after the next reboot.
@@ -157,7 +157,9 @@ The same API can also be used to reduce the desired RAM for a VM. It is importan
## PCI Device Hot Plug
Extra PCI devices can be added and removed from a running Cloud Hypervisor instance. This is controlled by making a HTTP API request to the VMM to ask for the additional device to be added, or for the existing device to be removed.
Extra PCI devices can be added and removed from a running `cloud-hypervisor` instance. This is controlled by making a HTTP API request to the VMM to ask for the additional device to be added, or for the existing device to be removed.
Note: On AArch64 platform, PCI device hotplug can only be achieved using ACPI. Please refer to the [documentation](arm64.md#uefi-booting) for more information.
To use PCI device hotplug start the VM with the HTTP server.
Cloud Hypervisor supports using a MACVTAP device which is derived from a MACVLAN. Full details of configuring MACVLAN or MACVTAP is out of scope of this document. However the example below indicates how to bridge the guest directly onto the the network the host is on. Due to the lack of hairpin mode it not usually possible to reach the guest directly from the host.
Cloud Hypervisor supports using a MACVTAP device which is derived from a MACVLAN. Full details of configuring MACVLAN or MACVTAP is out of scope of this document. However the example below indicates how to bridge the guest directly onto the network the host is on. Due to the lack of hairpin mode it not usually possible to reach the guest directly from the host.
```bash
# The MAC address must be attached to the macvtap and be used inside the guest
Specifies if the memory must be `mmap(2)` with `MAP_SHARED` flag.
By sharing a memory mapping, one can share the guest RAM with other processes
running on the host. One can use this option when running vhost-user devices
as part of the VM device model, as they will be driven by standalone daemons
needing access to the guest RAM content.
By default this option is turned off, which results in performing `mmap(2)`
with `MAP_PRIVATE` flag.
_Example_
```
--memory size=1G,shared=on
```
### `hugepages` and `hugepage_size`
Specifies if the memory must be created and `mmap(2)` with `MAP_HUGETLB` and size
flags. This performs a memory mapping relying on the specified huge page size. If no huge page size is supplied the system's default huge page size is used.
By using hugepages, one can improve the overall performance of the VM, assuming
the guest will allocate hugepages as well. Another interesting use case is VFIO
as it speeds up the VM's boot time since the amount of IOMMU mappings are
reduced.
The user is responsible for ensuring there are sufficient huge pages of the specified size for the VMM to use. Failure to do so may result in strange VMM behaviour.
By default this option is turned off.
_Example_
```
--memory size=1G,hugepages=on,hugepage_size=2M
```
### `hotplug_method`
Selects the way of adding and/or removing memory to/from a booted VM.
Specifies if the memory must be `mmap(2)` with `MAP_SHARED` flag.
By sharing a memory mapping, one can share the guest RAM with other processes
running on the host. One can use this option when running vhost-user devices
as part of the VM device model, as they will be driven by standalone daemons
needing access to the guest RAM content.
By default this option is turned off, which results in performing `mmap(2)`
with `MAP_PRIVATE` flag.
_Example_
```
--memory size=1G,shared=on
```
### `hugepages` and `hugepage_size`
Specifies if the memory must be created and `mmap(2)` with `MAP_HUGETLB` and size
flags. This performs a memory mapping relying on the specified huge page size.
If no huge page size is supplied the system's default huge page size is used.
By using hugepages, one can improve the overall performance of the VM, assuming
the guest will allocate hugepages as well. Another interesting use case is VFIO
as it speeds up the VM's boot time since the amount of IOMMU mappings are
reduced.
The user is responsible for ensuring there are sufficient huge pages of the
specified size for the VMM to use. Failure to do so may result in strange VMM
behaviour, e.g. error with `ReadKernelImage` is common. If there is a strange
error with `hugepages` enabled, just disable it or check whether there are enough
huge pages.
By default this option is turned off.
_Example_
```
--memory size=1G,hugepages=on,hugepage_size=2M
```
### `prefault`
Specifies if the memory must be `mmap(2)` with `MAP_POPULATE` flag.
By triggering prefault, one can allocate all required physical memory and create
its page tables while calling `mmap`. With physical memory allocated, the number
of page faults will decrease during running, and performance will also improve.
Note that boot of VM will be slower with `prefault` enabled because of allocating
physical memory and creating page tables in advance, and physical memory of the
specified size will be consumed quickly.
This option only takes effect at boot of VM. There is also a `prefault` option in
restore and its choice will overwrite `prefault` in memory.
By default this option is turned off.
_Example_
```
--memory size=1G,prefault=on
```
## Advanced Parameters
`MemoryZoneConfig` or what is known as `--memory-zone` from the CLI perspective
@@ -155,14 +184,16 @@ struct MemoryZoneConfig {
file: Option<PathBuf>,
shared: bool,
hugepages: bool,
hugepage_size: Option<u64>,
host_numa_node: Option<u32>,
hotplug_size: Option<u64>,
hotplugged_size: Option<u64>,
prefault: bool,
}
```
```
--memory-zone <memory-zone> User defined memory zone parameters "size=<guest_memory_region_size>,file=<backing_file>,shared=on|off,hugepages=on|off,host_numa_node=<node_id>,id=<zone_identifier>,hotplug_size=<hotpluggable_memory_size>,hotplugged_size=<hotplugged_memory_size>"
--memory-zone <memory-zone> User defined memory zone parameters "size=<guest_memory_region_size>,file=<backing_file>,shared=on|off,hugepages=on|off,hugepage_size=<hugepage_size>,host_numa_node=<node_id>,id=<zone_identifier>,hotplug_size=<hotpluggable_memory_size>,hotplugged_size=<hotplugged_memory_size>,prefault=on|off"
```
This parameter expects one or more occurences, allowing for a list of memory
@@ -250,24 +281,30 @@ _Example_
--memory-zone id=mem0,size=1G,shared=on
```
### `hugepages`
### `hugepages` and `hugepage_size`
Specifies if the memory zone must be `mmap(2)` with `MAP_HUGETLB` and
`MAP_HUGE_2MB`flags. This performs a memory zone mapping relying on 2MiB
pages instead of the default 4kiB pages.
Specifies if the memory must be created and `mmap(2)` with `MAP_HUGETLB` and size
flags. This performs a memory mapping relying on the specified huge page size.
If no huge page size is supplied the system's default huge page size is used.
By using hugepages, one can improve the overall performance of the VM, assuming
the guest will allocate hugepages as well. Another interesting use case is VFIO
as it speeds up the VM's boot time since the amount of IOMMU mappings are
reduced.
The user is responsible for ensuring there are sufficient huge pages of the
specified size for the VMM to use. Failure to do so may result in strange VMM
behaviour, e.g. error with `ReadKernelImage` is common. If there is a strange
error with `hugepages` enabled, just disable it or check whether there are enough
Specifies if the memory must be `mmap(2)` with `MAP_POPULATE` flag.
By triggering prefault, one can allocate all required physical memory and create
its page tables while calling `mmap`. With physical memory allocated, the number
of page faults will decrease during running, and performance will also improve.
Note that boot of VM will be slower with `prefault` enabled because of allocating
physical memory and creating page tables in advance, and physical memory of the
specified size will be consumed quickly.
This option only takes effect at boot of VM. There is also a `prefault` option in
restore and its choice will overwrite `prefault` in memory.
By default this option is turned off.
_Example_
```
--memory size=0
--memory-zone id=mem0,size=1G,prefault=on
```
## NUMA settings
`NumaConfig` or what is known as `--numa` from the CLI perspective has been
@@ -343,15 +404,16 @@ it allows for specifying the distance between each NUMA node.
```rust
structNumaConfig{
id: u32,
guest_numa_id: u32,
cpus: Option<Vec<u8>>,
distances: Option<Vec<NumaDistance>>,
memory_zones: Option<Vec<String>>,
sgx_epc_sections: Option<Vec<String>>,
}
```
```
--numa <numa> Settings related to a given NUMA node "id=<node_id>,cpus=<cpus_id>,distances=<list_of_distances_to_destination_nodes>,memory_zones=<list_of_memory_zones>"
--numa <numa> Settings related to a given NUMA node "guest_numa_id=<node_id>,cpus=<cpus_id>,distances=<list_of_distances_to_destination_nodes>,memory_zones=<list_of_memory_zones>,sgx_epc_sections=<list_of_sgx_epc_sections>"
```
### `guest_numa_id`
@@ -384,18 +446,20 @@ integer of 8 bits.
For instance, if one needs to attach all CPUs from 0 to 4 to a specific node,
the syntax using `-` will help define a contiguous range with `cpus=0-4`. The
same example could also be described with `cpus=0:1:2:3:4`.
same example could also be described with `cpus=[0,1,2,3,4]`.
A combination of both `-` and `:` separators is useful when one might need to
A combination of both `-` and `,` separators is useful when one might need to
describe a list containing all CPUs from 0 to 99 and the CPU 255, as it could
simply be described with `cpus=0-99:255`.
simply be described with `cpus=[0-99,255]`.
As soon as one tries to describe a list of values, `[` and `]` must be used to
cloud-hypervisor can emulate one or more virtual network interfaces, represented at the hypervisor host by [tap devices](https://www.kernel.org/doc/Documentation/networking/tuntap.txt). This guide briefly describes, in a manual and distribution neutral way, how to setup and use networking with cloud-hypervisor.
## Multiple queue support for net devices ##
While multiple vcpus defined for guest, to gain the benefit of vcpu scalable to improve performance, it suggests to define multiple queue pairs for net devices, one Tx/Rx queue pair per one vcpu, that means the number of queue pairs at least is equal to the vcpu count. In that case, after virtnet driver set cpu affinity for virtqueues in guest kernel, vcpus could handle interrupt from different virtqueue pairs in parallel.
It will gain better performance for guest that has multiple queues defined for net devices while it has multiple net sessions running in userspace.
To enable multiple queue support in cloud-hypervisor, multiple queue pairs will be defined, while multiple tap fds will be opened for the same tap device, it will also have multiple threads started, each thread will monitor and handle the events from each virtqueue pairs and the associated tap fd.
Note:
- Currently, it does not support to use ethtool to change the combined queue numbers in guest.
- Multiple queue is enabled for vhost-user-net backend in cloud-hypervisor, however, multiple thread is not added to handle mq, thus, the performance for vhost-user-net backend is not supposed to be improved. The multiple thread will be added for backend later.
- Performance test for vhost-user-net will be covered once vhost-user-net backend has multiple thread supported.
- Performance test for virtio-net is done by comparing 2 queue pairs with 1 queue pairs, that to run 2 iperf3 sessions in the same test environments, throughput is improved about 37%.
## Start cloud-hypervisor with net devices
Use one `--net` command-line argument from cloud-hypervisor to specify the emulation of one or more virtual NIC's. The example below instructs cloud-hypervisor to emulate for instance 2 virtual NIC's:
num_queues is the total number of tx and rx queues, the default value is 2, and it could be increased by multiples of 2. Additionally, num_queues is suggested to be as 2 times of vcpu count. The default value for queue_size is 256.
If the tap device is pre-created on host before guest boot up. To use multiple queue support for net device in guest, the tap device should be opened like this from host.
```bash
[root@localhost ~]# ip tuntap add name ich0 mode tap multi_queue
```
And the `--net` device should specify support for multiple queues. `num_queues` must be a multiple of 2 starting at least from 4 since multiple queues really means multiple queue pairs. We need at least 2 pairs for this configuration to be correct:
Different networking models can be used to provide external connectivity. In this example we will
use 2 linux bridges emulating 2 different networks. The integration bridge (ich-int) in this example will also be used
for external connectivity.
Create the bridges and connect the cloud-hypervisor tap devices to the bridges:
```bash
root@host:~# brctl addbr ich-int
root@host:~# brctl addbr ich-dpl
root@host:~# ip link set up ich-int
root@host:~# ip link set up ich-dpl
root@host:~# brctl addif ich-int ich0
root@host:~# brctl addif ich-dpl ich1
root@host:~# brctl show
bridge name bridge id STP enabled interfaces
ich-dpl 8000.067afc1b9a67 no ich1
ich-int 8000.725412ffce6f no ich0
```
This completes the layer 2 wiring: The cloud-hypervisor is now connected to the hypervisor host via the 2 linux bridges.
## IP (Layer 3) provisioning
### Hypervisor host
On the hypervisor host add the network gateway IP address of each network to the 2 linux bridges:
```bash
root@host:~# ip addr add 192.168.4.1/24 dev ich-int
root@host:~# ip addr add 10.0.1.1/24 dev ich-dpl
```
The routing table of the hypervisor host should now also have corresponding routing entries:
```bash
root@host:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.178.1 0.0.0.0 UG 60000 wlan1
10.0.1.0 0.0.0.0 255.255.255.0 U 000 ich-dpl
192.168.4.0 0.0.0.0 255.255.255.0 U 000 ich-int
192.168.178.0 0.0.0.0 255.255.255.0 U 60000 wlan1
```
### Virtual Machine
Within the virtual machine set the vNIC's to up state and provision the corresponding IP addresses on the 2 vNIC's. The steps outlined below use the ip command as an example. Alternative distribution specific procedures can also apply.
```bash
root@guest:~# ip link set up enp0s2
root@guest:~# ip link set up enp0s3
root@guest:~# ip addr add 192.168.4.2/24 dev enp0s2
root@guest:~# ip addr add 10.0.1.2/24 dev enp0s3
```
IP connectivity between the virtual machine and the hypervisor-host can be verified by sending
ICMP requests to the hypervisor-host for the gateway IP address from within the virtual machine:
```bash
root@guest:~# ping 192.168.4.1
PING 192.168.4.1 (192.168.4.1) 56(84) bytes of data.
64 bytes from 192.168.4.1: icmp_seq=1ttl=64time=0.456 ms
64 bytes from 192.168.4.1: icmp_seq=2ttl=64time=0.226 ms
root@guest:~# ping 10.0.1.1
PING 10.0.1.1 (10.0.1.1) 56(84) bytes of data.
64 bytes from 10.0.1.1: icmp_seq=1ttl=64time=0.449 ms
64 bytes from 10.0.1.1: icmp_seq=2ttl=64time=0.393 ms
```
The connection can now be used for instance to log into the virtual machine with
ssh under the precondition that the machine has an ssh daemon provisioned:
```bash
root@host:~# ssh root@192.168.4.2
The authenticity of host '192.168.4.2 (192.168.4.2)' can't be established.
ECDSA key fingerprint is SHA256:qNAUmTtDMW9pNuZARkpLQhfw+Yc1tqUDBrQp7aZGSjw.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.4.2' (ECDSA) to the list of known hosts.
root@192.168.4.2's password:
Linux cloud-hypervisor 5.2.0 #2 SMP Thu Jul 11 08:08:16 CEST 2019 x86_64
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Fri Jul 12 13:27:56 2019 from 192.168.4.1
root@guest:~#
```
## Internet connectivity
To enable internet connectivity a default gw and a nameserver has to be set within
the virtual machine:
```bash
root@guest:~# ip route add default via 192.168.4.1
root@guest:~# cat /etc/resolv.conf
options timeout:2
domain vallis.nl
search vallis.nl
nameserver 192.168.178.1
```
make sure that the default gateway of the hypervisor host (in this example host 192.168.178.1 which is an adsl router) has an entry in the routing table for the 192.168.4.0/24 network otherwise IP connectivity will not work.
`perf` can be used to profile the `cloud-hypervisor` binary but it is necessary to make some modifications to the the build in order to produce a binary that gives useful results.
`perf` can be used to profile the `cloud-hypervisor` binary but it is necessary to make some modifications to the build in order to produce a binary that gives useful results.
After the successful build, the resulting firmware binaries are available under `Build/OvmfCh/DEBUG_GCC5/FV` underneath the edk2 checkout.
After the successful build, the resulting firmware binaries are available under `Build/CloudHvX64/DEBUG_GCC5/FV` underneath the edk2 checkout.
## Using OVMF Binaries
Any UEFI capable image can be booted using the Cloud Hypervisor specific firmware. Windows guests under Cloud Hypervisor only support UEFI boot, therefore OVMF is mandatory there.
To make Cloud Hypervisor use UEFI boot, pass the `OVMF.fd` file path as an argument to the `--kernel` option. The firmware file will be opened in read only mode.
The same firmware can be used with Cloud Hypervisor or with QEMU. This is particularly useful if using QEMU for the preparation phase.
## Building UEFI Firmware with Compatibility Support Module (CSM)
CSM is a module that allows to boot legacy operating systems using the OVMF firmware. OVMF can embed a CSM build of SeaBIOS. To build the SeaBIOS with CSM support, add `CONFIG_CSM=y` to `.config` before the build. The outcome `out/Csm16.bin` is to be moved into `OvmfPkg/Csm/Csm16/Csm16.bin` before OVMF is built. Then, the OVMF build will have to be passed the `-D CSM_ENABLE` option in order to generate a legacy aware UEFI firmware. At the current stage, all the necessary patches are included in the Cloud Hypervisor specific [SeaBIOS branch](https://github.com/cloud-hypervisor/seabios/tree/ch). Taking into account the previous instructions, the modified command sequence to compile an OVMF binary with CSM support is the following one:
Please note, that the CSM support has currently only been tested with Linux guests. There are no plans to provide legacy support for other OSes (e.g. Windows).
To make Cloud Hypervisor use UEFI boot, pass the `CLOUDHV.fd` file path as an argument to the `--kernel` option. The firmware file will be opened in read only mode.
VFIO-user is an *experimental* protocol for allowing devices to be implemented in another process and communicate over a socket; ie.e VFIO-user is to VFIO as virtio is to vhost-user.
The protocol is documented here: https://github.com/nutanix/libvfio-user/blob/master/docs/vfio-user.rst
The Cloud Hypervisor support for such devices is *experimental*. Not all Cloud Hypervisor functionality is supported in particular: virtio-mem and iommu are not supported.
## Usage
The `--user-device socket=<path>` parameter is used to create a vfio-user device when creating the VM specifying the socket to connect to. The device can also be hotplugged with `ch-remote add-user-device socket=<path>`.
## Example (GPIO device)
There is a simple GPIO device included in the libvfio-user repository: https://github.com/nutanix/libvfio-user#gpio
The test runs with multiple queue (MQ) support enabled, using 2 pairs of TX/RX queues defined for both OVS and the virtual machine. Here are the details on how the test can be run.
The test runs with multiple queue (MQ) support enabled, using 2 pairs of
TX/RX queues defined for both OVS and the virtual machine. Here are the
detailed instructions.
_Setup OVS_
`ovs_test.sh` is created to setup and start OVS. OVS will provide the `dpdkvhostuser` backend running in server mode.
Here is an example how to configure a basic OpenVswitch using DPDK:
- Suitable firmware for Cloud Hypervisor (`CLOUDHV.fd`) and for QEMU (`OVMF.fd`)
- With the suggested image size of 30G, there should be enough free disk space to hold the installation ISO and any other necessary files
This step currently requires QEMU to install Windows onto the guest. QEMU is only used at the preparation stage, the resulting image is then fully functional with Cloud Hypervisor.
@@ -30,15 +30,15 @@ This step currently requires QEMU to install Windows onto the guest. QEMU is onl
Preparing several command parts as these will be used in the follow up sections as well.
This allows for SSH login from a remote machine, for example through the `administrator` user: `ssh administrator@192.168.249.2`. For a more detailed OpenSSH guide, please follow the MSDN article from the [links](#links) section.
## Hotplug capability
CPU hotplug is supported. The VM operating system needs to support hotplug and be appropriately licensed. SKU limitations like constraints on the number of cores are to be taken into consideration. Note, that Windows doesn't support CPU hot-remove. When `ch-remote` is invoked to reduce the number of CPUs, the result will be visible after the OS reboot within the same hypervisor instance.
RAM hotplug is supported. Note, that while the `pnpmem.sys` driver in use supports RAM hot-remove, the RAM being unplugged has to be not in use and have no reserved pages. In most cases it means, hot-remove won't work. Same as with the CPU hot-remove, when `ch-remote` is invoked to reduce the RAM size, the result will be visible after the OS reboot.
Network device hotplug and hot-remove are supported.
Disk hotplug and hot-remove are supported. After the device has been hotplugged, it will need to be onlined from within the guest. Among other tools, powershell applets `Get-Disk` and `Set-Disk` can be used for the disk configuration and activation.
## Debugging
The Windows guest debugging process relies heavily on QEMU and [socat](http://www.dest-unreach.org/socat/). The procedure requires two Windows VMs:
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