vmm: device_manager: introduce add_passthrough_device
It calls add_vfio_device on KVM or returns an error when not running on
KVM.
@@ -369,6 +369,9 @@ pub enum DeviceManagerError {
/// Missing PCI b/d/f from the DeviceNode.
#[cfg(feature = "pci_support")]
MissingDeviceNodePciBdf,
+
+ /// No support for device passthrough
+ NoDevicePassthroughSupport,
}
pub type DeviceManagerResult<T> = result::Result<T, DeviceManagerError>;
@@ -2383,6 +2386,21 @@ impl DeviceManager {
}
#[cfg(feature = "pci_support")]
+ fn add_passthrough_device(
+ &mut self,
+ pci: &mut PciBus,
+ interrupt_manager: &Arc<dyn InterruptManager<GroupConfig = MsiIrqGroupConfig>>,
+ device_fd: &Arc<DeviceFd>,
+ device_cfg: &mut DeviceConfig,
+ ) -> DeviceManagerResult<(u32, String)> {
+ #[cfg(feature = "kvm")]
+ return self.add_vfio_device(pci, interrupt_manager, device_fd, device_cfg);
+
+ #[cfg(not(feature = "kvm"))]
+ Err(DeviceManagerError::NoDevicePassthroughSupport)
+ }
+
+ #[cfg(all(feature = "pci_support", feature = "kvm"))]
fn add_vfio_device(
&mut self,
pci: &mut PciBus,
@@ -2503,7 +2521,7 @@ impl DeviceManager {
for device_cfg in device_list_cfg.iter_mut() {
let (device_id, _) =
- self.add_vfio_device(pci, interrupt_manager, &device_fd, device_cfg)?;
+ self.add_passthrough_device(pci, interrupt_manager, &device_fd, device_cfg)?;
if device_cfg.iommu && self.iommu_device.is_some() {
iommu_attached_device_ids.push(device_id);
}
@@ -2934,7 +2952,7 @@ impl DeviceManager {
device_fd
};
- let (device_id, device_name) = self.add_vfio_device(
+ let (device_id, device_name) = self.add_passthrough_device(
&mut pci.lock().unwrap(),
&interrupt_manager,
&device_fd,
