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-call.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.
>From f423fa1bc9fe1978e6b9f54927411b62cb43eb04 Mon Sep 17 00:00:00 2001
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Thu, 29 Sep 2022 14:48:35 -0300
Subject: drm/i915/gvt: Add missing vfio_unregister_group_dev() call
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
commit f423fa1bc9fe1978e6b9f54927411b62cb43eb04 upstream.
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>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx> # v6.0 backport
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx> # v6.0 backport
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gvt/kvmgt.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1595,6 +1595,9 @@ static void intel_vgpu_remove(struct mde
if (WARN_ON_ONCE(vgpu->attached))
return;
+
+ vfio_unregister_group_dev(&vgpu->vfio_device);
+ vfio_uninit_group_dev(&vgpu->vfio_device);
intel_gvt_destroy_vgpu(vgpu);
}
Patches currently in stable-queue which might be from jgg@xxxxxxxxxx are
queue-6.0/drm-i915-gvt-add-missing-vfio_unregister_group_dev-call.patch
