tree 93712843112903e2ae697a75fafd726f14897e83
parent 6a7cbbc267c0cafa2b027983a40276deb673c066
author Philip Yang <Philip.Yang@amd.com> 1710194854 -0400
committer Alex Deucher <alexander.deucher@amd.com> 1710954777 -0400

drm/amdgpu: amdgpu_ttm_gart_bind set gtt bound flag

Otherwise after the GTT bo is released, the GTT and gart space is freed
but amdgpu_ttm_backend_unbind will not clear the gart page table entry
and leave valid mapping entry pointing to the stale system page. Then
if GPU access the gart address mistakely, it will read undefined value
instead page fault, harder to debug and reproduce the real issue.

Cc: stable@vger.kernel.org
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>