[PATCH 15/20] qemu_cgroup.c: skip absent PCI devices in qemuTeardownHostdevCgroup()
There is no need to bother with cgroup tearing down for absent
PCI devices, given that their entries in the sysfs are already
gone.
Signed-off-by: Daniel Henrique Barboza <danielhb413(a)gmail.com>
---
src/qemu/qemu_cgroup.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index f7146a71c9..050df21d87 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -467,6 +467,16 @@ qemuTeardownHostdevCgroup(virDomainObjPtr vm,
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_DEVICES))
return 0;
+ /* Skip tearing down Cgroup for hostdevs that represents absent
+ * PCI devices, e.g. SR-IOV virtual functions that were removed from
+ * the host while the domain was still running. */
+ if (virHostdevIsPCIDevice(dev)) {
+ const virDomainHostdevSubsysPCI *pcisrc = &dev->source.subsys.u.pci;
+
+ if (!virPCIDeviceExists(&pcisrc->addr))
+ return 0;
+ }
+
if (qemuDomainGetHostdevPath(dev, &path, NULL) < 0)
return -1;
--
2.26.2