This is a note to let you know that I've just added the patch titled
drm/i915/gvt: Add missing vfio_unregister_group_dev() call
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-gvt-add-missing-vfio_unregister_group_dev-c.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9df747c58f96b4595e835824008f2a2974ba7723
Author: Jason Gunthorpe <jgg@xxxxxxxx>
Date: Thu Sep 29 14:48:35 2022 -0300
drm/i915/gvt: Add missing vfio_unregister_group_dev() call
[ Upstream commit f423fa1bc9fe1978e6b9f54927411b62cb43eb04 ]
When converting to directly create the vfio_device the mdev driver has to
put a vfio_register_emulated_iommu_dev() in the probe() and a pairing
vfio_unregister_group_dev() in the remove.
This was missed for gvt, add it.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 978cf586ac35 ("drm/i915/gvt: convert to use vfio_register_emulated_iommu_dev")
Reported-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Link: https://lore.kernel.org/r/0-v1-013609965fe8+9d-vfio_gvt_unregister_jgg@xxxxxxxxxx
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index e3cd58946477..dacd57732dbe 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1595,6 +1595,7 @@ static void intel_vgpu_remove(struct mdev_device *mdev)
if (WARN_ON_ONCE(vgpu->attached))
return;
+ vfio_unregister_group_dev(&vgpu->vfio_device);
intel_gvt_destroy_vgpu(vgpu);
}
