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vmm: make PCI BDF configurable for balloon

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Add shared PCI config to virtio-balloon.

On-behalf-of: SAP philipp.schuster@sap.com
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
This commit is contained in:
Philipp Schuster
2026-05-19 14:58:52 +02:00
committed by Rob Bradford
parent 08bd7727ff
commit 5aa0587f2a
5 changed files with 126 additions and 8 deletions
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19
vmm/src/device_manager.rs
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@@ -3664,8 +3664,16 @@ impl DeviceManager {
&mut self,
snapshot: Option<&Snapshot>,
) -> DeviceManagerResult<()> {
if let Some(balloon_config) = &self.config.lock().unwrap().balloon {
let id = String::from(BALLOON_DEVICE_NAME);
let mut balloon_config = self.config.lock().unwrap().balloon.clone();
if let Some(balloon_config) = &mut balloon_config {
let id = match balloon_config.pci_common.id.as_ref() {
Some(id) => id.clone(),
None => balloon_config
.pci_common
.id
.insert(BALLOON_DEVICE_NAME.to_string())
.clone(),
};
info!("Creating virtio-balloon device: id = {id}");
let virtio_balloon_device = Arc::new(Mutex::new(
@@ -3674,7 +3682,7 @@ impl DeviceManager {
balloon_config.size,
balloon_config.deflate_on_oom,
balloon_config.free_page_reporting,
self.force_access_platform,
self.force_access_platform | balloon_config.pci_common.iommu,
self.seccomp_action.clone(),
self.exit_evt
.try_clone()
@@ -3690,10 +3698,7 @@ impl DeviceManager {
self.virtio_devices.push(MetaVirtioDevice {
virtio_device: Arc::clone(&virtio_balloon_device)
as Arc<Mutex<dyn virtio_devices::VirtioDevice>>,
pci_common: PciDeviceCommonConfig {
id: Some(id.clone()),
..Default::default()
},
pci_common: balloon_config.pci_common.clone(),
dma_handler: None,
});