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drm/amdgpu: restrict userptr even more

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Don't allow them to be GEM imported into another process.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-08-29 16:07:31 +02:00 committed by Alex Deucher
parent 0f2fc435d8
commit 4f5839c56e
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
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@ -112,7 +112,13 @@ int amdgpu_gem_object_open(struct drm_gem_object *obj,
struct amdgpu_fpriv *fpriv = file_priv->driver_priv;
struct amdgpu_vm *vm = &fpriv->vm;
struct amdgpu_bo_va *bo_va;
struct mm_struct *mm;
int r;
mm = amdgpu_ttm_tt_get_usermm(abo->tbo.ttm);
if (mm && mm != current->mm)
return -EPERM;
r = amdgpu_bo_reserve(abo, false);
if (r)
return r;