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drm/msm/a6xx: Track current ctx by seqno

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commit 14eb0cb4e9a7323c8735cf6c681ed8423ce6ae06 upstream.

In theory a context can be destroyed and a new one allocated at the same
address, making the pointer comparision to detect when we don't need to
update the current pagetables invalid.  Instead assign a sequence number
to each context on creation, and use this for the check.

Fixes: 84c31ee16f ("drm/msm/a6xx: Add support for per-instance pagetables")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Clark
2021-09-30 10:43:20 -07:00
committed by Greg Kroah-Hartman
parent abd1186415
commit b28586fb04
4 changed files with 17 additions and 4 deletions
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drivers/gpu/drm/msm/msm_drv.h
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@@ -58,6 +58,7 @@ struct msm_file_private {
int queueid;
struct msm_gem_address_space *aspace;
struct kref ref;
int seqno;
};
enum msm_mdp_plane_property {