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drm/amdgpu: implement AMDGPU_VA_OP_CLEAR v2

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A new VM operation to remove all mappings in a range.

v2: limit unmapped area as noted by Jerry

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-03-13 10:13:38 +01:00 • committed by Alex Deucher
commit dc54d3d174
5 changed files with 124 additions and 8 deletions
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1
include/uapi/drm/amdgpu_drm.h
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@ -350,6 +350,7 @@ struct drm_amdgpu_gem_op {
#define AMDGPU_VA_OP_MAP 1
#define AMDGPU_VA_OP_UNMAP 2
#define AMDGPU_VA_OP_CLEAR 3
/* Delay the page table update till the next CS */
#define AMDGPU_VM_DELAY_UPDATE (1 << 0)