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qemu: cgroup: Adjust cgroups' logic to allow mediated devices

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As goes for all the other hostdev device types, grant the qemu process
access to /dev/vfio/<mediated_device_iommu_group>.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Erik Skultety 2017-02-03 14:13:25 +01:00
parent a4a39d90ab
commit de4e8bdbc7
1 changed files with 14 additions and 0 deletions
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14
src/qemu/qemu_domain.c
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@ -7002,10 +7002,12 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
virDomainHostdevSubsysPCIPtr pcisrc = &dev->source.subsys.u.pci;
virDomainHostdevSubsysSCSIPtr scsisrc = &dev->source.subsys.u.scsi;
virDomainHostdevSubsysSCSIVHostPtr hostsrc = &dev->source.subsys.u.scsi_host;
virDomainHostdevSubsysMediatedDevPtr mdevsrc = &dev->source.subsys.u.mdev;
virPCIDevicePtr pci = NULL;
virUSBDevicePtr usb = NULL;
virSCSIDevicePtr scsi = NULL;
virSCSIVHostDevicePtr host = NULL;
virMediatedDevicePtr mdev = NULL;
char *tmpPath = NULL;
bool freeTmpPath = false;
bool includeVFIO = false;
@ -7106,6 +7108,17 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
}
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV:
if (!(mdev = virMediatedDeviceNew(mdevsrc->uuidstr,
mdevsrc->model)))
goto cleanup;
if (!(tmpPath = virMediatedDeviceGetIOMMUGroupDev(mdev)))
goto cleanup;
freeTmpPath = true;
includeVFIO = true;
perm = VIR_CGROUP_DEVICE_RW;
break;
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_LAST:
break;
}
@ -7155,6 +7168,7 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
virUSBDeviceFree(usb);
virSCSIDeviceFree(scsi);
virSCSIVHostDeviceFree(host);
virMediatedDeviceFree(mdev);
if (freeTmpPath)
VIR_FREE(tmpPath);
return ret;