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| author | Tomita Moeko <tomitamoeko@gmail.com> | 2025-05-06 01:03:01 +0800 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-05-09 12:42:27 +0200 |
| commit | 106cdbcef4ef1c99c2c66b68f8c3349363fac97b (patch) | |
| tree | cbfad5caf5c4e97e176de8e814e5ce76a1c839ea | |
| parent | 2bd33abcf16b50de8e71b1db98186d6fa67f9a39 (diff) | |
| download | qemu-106cdbcef4ef1c99c2c66b68f8c3349363fac97b.zip qemu-106cdbcef4ef1c99c2c66b68f8c3349363fac97b.tar.gz qemu-106cdbcef4ef1c99c2c66b68f8c3349363fac97b.tar.bz2 | |
vfio/igd: Check OpRegion support on GVT-g mdev
The Intel GVT-g backend `kvmgt` always emulates OpRegion for vGPU,
make sure the OpRegion is present for enabling access to it
automatically later.
Also, hotplugging GVT-g vGPU is now always disallowed regardless of
OpRegion to prevent potential issues. Intel has never claimed support
for GVT-g hotplugging.
Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
Reviewed-by: Corvin Köhne <c.koehne@beckhoff.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250505170305.23622-6-tomitamoeko@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
| -rw-r--r-- | hw/vfio/igd.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/hw/vfio/igd.c b/hw/vfio/igd.c index f5dd475..9dec328 100644 --- a/hw/vfio/igd.c +++ b/hw/vfio/igd.c @@ -685,9 +685,13 @@ static bool vfio_pci_kvmgt_config_quirk(VFIOPCIDevice *vdev, Error **errp) return true; } + if (!vfio_pci_igd_opregion_detect(vdev, &opregion, errp)) { + /* Should never reach here, KVMGT always emulates OpRegion */ + return false; + } + if ((vdev->features & VFIO_FEATURE_ENABLE_IGD_OPREGION) && - (!vfio_pci_igd_opregion_detect(vdev, &opregion, errp) || - !vfio_pci_igd_opregion_init(vdev, opregion, errp))) { + !vfio_pci_igd_opregion_init(vdev, opregion, errp)) { return false; } |