This is a note to let you know that I've just added the patch titled
drm/amdkfd: Use correct drm device for cgroup permission check
to the 6.6-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-amdkfd-use-correct-drm-device-for-cgroup-permiss.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b4ab79aa8664ffa1867a40b59f2d3eb4c5af7270
Author: Mukul Joshi <mukul.joshi@xxxxxxx>
Date: Fri Jan 26 15:14:50 2024 -0500
drm/amdkfd: Use correct drm device for cgroup permission check
[ Upstream commit 4119734e06a7f30e7e8eb666692a58b85dca0269 ]
On GFX 9.4.3, for a given KFD node, fetch the correct drm device from
XCP manager when checking for cgroup permissions.
Signed-off-by: Mukul Joshi <mukul.joshi@xxxxxxx>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 3287a39613959..12ee273e87e1e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -1482,10 +1482,15 @@ void kfd_dec_compute_active(struct kfd_node *dev);
/* Cgroup Support */
/* Check with device cgroup if @kfd device is accessible */
-static inline int kfd_devcgroup_check_permission(struct kfd_node *kfd)
+static inline int kfd_devcgroup_check_permission(struct kfd_node *node)
{
#if defined(CONFIG_CGROUP_DEVICE) || defined(CONFIG_CGROUP_BPF)
- struct drm_device *ddev = adev_to_drm(kfd->adev);
+ struct drm_device *ddev;
+
+ if (node->xcp)
+ ddev = node->xcp->ddev;
+ else
+ ddev = adev_to_drm(node->adev);
return devcgroup_check_permission(DEVCG_DEV_CHAR, DRM_MAJOR,
ddev->render->index,
