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vfio/ccw: Don't initialize HOST_IOMMU_DEVICE with mdev

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mdevs aren't "physical" devices and when asking for backing IOMMU info,
it fails the entire provisioning of the guest. Fix that by setting
vbasedev->mdev true so skipping HostIOMMUDevice initialization in the
presence of mdevs.

Fixes: 9305895201 ("vfio/iommufd: Implement HostIOMMUDeviceClass::realize() handler")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Acked-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
This commit is contained in:
Zhenzhong Duan
2024-07-23 17:14:52 +02:00
committed by Cédric Le Goater
parent c598d65aef
commit 8b8705e7f2
1 changed files with 3 additions and 0 deletions
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hw/vfio/ccw.c
+3
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@@ -675,6 +675,9 @@ static void vfio_ccw_instance_init(Object *obj)
VFIOCCWDevice *vcdev = VFIO_CCW(obj);
VFIODevice *vbasedev = &vcdev->vdev;
/* CCW device is mdev type device */
vbasedev->mdev = true;
/*
* All vfio-ccw devices are believed to operate in a way compatible with
* discarding of memory in RAM blocks, ie. pages pinned in the host are