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| author | Jacob He <jacob.he@amd.com> | 2020-02-27 21:17:40 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-02-28 16:59:21 -0500 |
| commit | 460c484f2411b1f3d291a3237d1bab7327448f01 (patch) | |
| tree | 82348223160cababc8594779a50d9a1fbd1534dd /drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | |
| parent | 89510a2737ae6515dcc5e6cbd3cf588753d4fa17 (diff) | |
drm/amdgpu: Initialize SPM_VMID with 0xf (v2)
SPM_VMID is a global resource, SPM access the video memory according to
SPM_VMID. The initial valude of SPM_VMID is 0 which is used by kernel.
That means UMD can overwrite the memory of VMID0 by enabling SPM, that
is really dangerous.
Initialize SPM_VMID with 0xf, it messes up other user mode process at
most.
v2: squash in indentation fix
Signed-off-by: Jacob He <jacob.he@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c')
0 files changed, 0 insertions, 0 deletions