External/cloud-hypervisor
1
0
Fork 0
mirror of https://github.com/cloud-hypervisor/cloud-hypervisor.git synced 2024-06-30 23:12:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

vmm: Attach all devices from specified segments to the IOMMU

Browse Source 
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>
This commit is contained in:
Rob Bradford 2022-02-11 09:33:55 +00:00
parent 6994b33a24
commit 20b9f95afd
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
vmm/src/device_manager.rs
View File

@ -1246,6 +1246,20 @@ impl DeviceManager {
let mut vfio_user_iommu_device_ids = self.add_user_devices()?;
iommu_attached_devices.append(&mut vfio_user_iommu_device_ids);
// Add all devices from forced iommu segments
if let Some(platform_config) = self.config.lock().unwrap().platform.as_ref() {
if let Some(iommu_segments) = platform_config.iommu_segments.as_ref() {
for segment in iommu_segments {
for device in 0..32 {
let bdf = PciBdf::new(*segment, 0, device, 0);
if !iommu_attached_devices.contains(&bdf) {
iommu_attached_devices.push(bdf);
}
}
}
}
}
if let Some(iommu_device) = iommu_device {
let dev_id = self.add_virtio_pci_device(iommu_device, &None, iommu_id, 0)?;
self.iommu_attached_devices = Some((dev_id, iommu_attached_devices));