kata-containers/cloud-hypervisor
1
0
Fork 0
mirror of https://github.com/cloud-hypervisor/cloud-hypervisor.git synced 2026-08-05 02:19:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

vmm: Conditionally update ioeventfds for virtio PCI device

Browse Source 
The specific part of PCI BAR reprogramming that happens for a virtio PCI
device is the update of the ioeventfds addresses KVM should listen to.
This should not be triggered for every BAR reprogramming associated with
the virtio device since a virtio PCI device might have multiple BARs.

The update of the ioeventfds addresses should only happen when the BAR
related to those addresses is being moved.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2019-10-30 09:13:29 -07:00
committed by Samuel Ortiz
parent de21c9ba4f
commit c7cabc88b4
4 changed files with 29 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
vmm/src/device_manager.rs
View File

@@ -358,10 +358,13 @@ impl DeviceRelocation for AddressManager {
let any_dev = pci_dev.as_any();
if let Some(virtio_pci_dev) = any_dev.downcast_ref::<VirtioPciDevice>() {
for (event, addr, _) in virtio_pci_dev.ioeventfds() {
let io_addr = IoEventAddress::Mmio(addr);
self.vm_fd
.register_ioevent(event.as_raw_fd(), &io_addr, NoDatamatch)?;
let bar_addr = virtio_pci_dev.config_bar_addr();
if bar_addr == new_base {
for (event, addr, _) in virtio_pci_dev.ioeventfds(new_base) {
let io_addr = IoEventAddress::Mmio(addr);
self.vm_fd
.register_ioevent(event.as_raw_fd(), &io_addr, NoDatamatch)?;
}
}
}
@@ -1200,7 +1203,8 @@ impl DeviceManager {
.allocate_bars(&mut allocator)
.map_err(DeviceManagerError::AllocateBars)?;
for (event, addr, _) in virtio_pci_device.ioeventfds() {
let bar_addr = virtio_pci_device.config_bar_addr();
for (event, addr, _) in virtio_pci_device.ioeventfds(bar_addr) {
let io_addr = IoEventAddress::Mmio(addr);
vm_fd
.register_ioevent(event.as_raw_fd(), &io_addr, NoDatamatch)