Commit Graph

25 Commits

Author SHA1 Message Date
Wei Liu
7f2723d9c6 hypervisor: x86: add two safety comments
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-11-18 12:50:01 +00:00
Wei Liu
e1a70f676a hypervisor: use serde_with with LapicState
Drop the hand-rolled serializer and deserializer.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-28 14:57:29 +01:00
Wei Liu
bec47ebcc9 hypervisor: simplify LapicState
Both KVM and MSHV share the same layout. We can drop one level of
indirection.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-28 08:52:28 +01:00
Wei Liu
ff7773044c tree-wide: drop some unneeded allow clauses
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-22 14:37:03 +01:00
Wei Liu
f21fc1dcb6 hypervisor: x86: provide a generic MsrEntry structure
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-20 10:13:41 +01:00
Wei Liu
05e5106b9b hypervisor x86: provide a generic LapicState structure
This requires making get/set_lapic_reg part of the type.

For the moment we cannot provide a default variant for the new type,
because picking one will be wrong for the other hypervisor, so I just
drop the test cases that requires LapicState::default().

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-19 09:38:38 +01:00
Wei Liu
6a8c0fc887 hypervisor: provide a generic FpuState structure
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-18 22:15:30 +01:00
Wei Liu
08135fa085 hypervisor: provide a generic CpudIdEntry structure
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-18 22:15:30 +01:00
Wei Liu
f1ab86fecb hypervisor: x86: provide a generic SpecialRegisters structure
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-15 10:21:43 +01:00
Wei Liu
d2b194c4f1 hypervisor: x86: provide a generic DescriptorTable structure
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-15 10:21:43 +01:00
Wei Liu
75797827d5 hypervisor: x86: provide a generic SegmentRegister structure
And drop SegmentRegisterOps since it is no longer required.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-15 10:21:43 +01:00
Wei Liu
8b7781e267 hypervisor: x86: provide a generic StandardRegisters structure
We only need to do this for x86 since MSHV does not have aarch64 support
yet. This reduces unnecessary code churn.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2022-07-15 10:21:43 +01:00
Rob Bradford
0c27f69f1c hypervisor: Address Rust 1.51.0 clippy issue (upper_case_acroynms)
warning: name `TranslateGVA` contains a capitalized acronym
  --> hypervisor/src/arch/emulator/mod.rs:51:5
   |
51 |     TranslateGVA(#[source] anyhow::Error),
   |     ^^^^^^^^^^^^ help: consider making the acronym lowercase, except the initial letter: `TranslateGva`
   |
   = note: `#[warn(clippy::upper_case_acronyms)]` on by default
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-03-26 11:32:09 +00:00
Rob Bradford
a330a1569a arch, arch_gen, hypervisor: Remove some unnecessary clippy attributes
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-02-15 18:03:27 +01:00
Wei Liu
fd9972ecc5 hypervisor: fix exception vector numbers
According to Intel SDM, #DE should be 0 and #DB should be 1.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2021-01-25 16:39:08 +00:00
Muminul Islam
8c85dd32fa hypervisor: Move msr and msr_data macro to arch/x86
Currently these two macros(msr, msr_data) reside both on kvm and mshv
module. Definition is same for both module. Moving them to arch/x86
module eliminates redundancy and makes more sense.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
2020-12-11 00:59:46 +01:00
Samuel Ortiz
d419e30df1 hypervisor: x86: Add a SegmentRegistorOps trait
In order to validate emulated memory accesses, we need to be able to get
all the segments descriptor attributes.

This is done by abstracting the SegmentRegister attributes through a
trait that each hypervisor will have to implement.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
Samuel Ortiz
b3a1f5f1be hypervisor: Start moving register definitions to the hypervisor crate
Most of arch/src/x86_64/regs.rs will eventually move unde
hypervisor/src/x86/regs.rs.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
Samuel Ortiz
1fc97e91a4 hypervisor: x86: Add an InstructionHandler interface
And an InstructionMap helper structure to map x86 mnemonic codes
to instruction handlers.

Any instruction emulation implementation should then boil down with
implementing InstructionHandler for any supported mnemonic.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
546778ebfb hypervisor: x86: Add a CpuStateManager interface
For efficiently emulating x86 instructions, we need to build and pass a
CPU state copy/reference to instruction emulation handlers. Those handlers
will typically modify the CPU state and let the caller commit those
changes back through the PlatformEmulator trait set_cpu_state method.

Hypervisors typically have internal CPU state structures, that maps back
to the correspinding kernel APIs. By implementing the CpuState trait,
instruction emulators will be able to directly work on CPU state
instances that are directly consumable by the underlying hypervisor and
its kernel APIs.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
ae96aeda65 arch: Move the gdt module to the hypervisor crate
We will need the GDT API for the hypervisor's x86 instruction
emulator implementation, it's better if the arch crate depends on the
hypervisor one rather than the other way around.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Wei Liu
2518b9e3cd vmm: hypervisor: fix white space issues
Signed-off-by: Wei Liu <liuwe@microsoft.com>
2020-06-29 21:51:59 +01:00
Muminul Islam
72ae1577ed hypervisor: Update license to Apache-2.0 OR BSD-3-Clause
Initially the licensing was just Apache-2.0. This patch changes
the licensing to dual license Apache-2.0 OR BSD-3-Clause

Signed-off-by: Muminul Islam <muislam@microsoft.com>
2020-06-27 00:06:39 +02:00
Muminul Islam
c48d0c1a67 hypervisor: kvm: Implement vCPU state method
Implement the vCPU state getter and setter separately from the initial
KVM Hypervisor trait implementation, mostly for readability purposes.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-06-22 15:03:15 +02:00
Muminul Islam
72e39a3496 hypervisor: Add KVM implementation
For each of the traits we are defining kvm related structures
and add the trait implementation to the structs. For more information
please see the kvm-ioctls and kvm-bindings crate.

This is a standalone implementation that does not include the switch of
the Cloud-Hypervisor vmm and arch crates to it.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-06-22 15:03:15 +02:00