On 03/22/2017 11:27 AM, Erik Skultety wrote:
> 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>
> ---
> src/qemu/qemu_domain.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index c0f060b0a3..d1ac1d641b 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -6999,10 +6999,12 @@ 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;
> @@ -7103,6 +7105,17 @@ 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;
> }
> @@ -7152,6 +7165,7 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
> virUSBDeviceFree(usb);
> virSCSIDeviceFree(scsi);
> virSCSIVHostDeviceFree(host);
> + virMediatedDeviceFree(mdev);
> if (freeTmpPath)
> VIR_FREE(tmpPath);
> return ret;
>
Yep. Faithful recreation of what's done to PCI devices.
ACK.
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