diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2021-05-12 08:02:46 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-19 22:33:54 -0400 |
| commit | bf546940d5aa15852f58d59158965737505edc03 (patch) | |
| tree | 27839d0f1dacea03c4d3322af3cdf622af2fbb7a /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | |
| parent | a6ce1e1aab3fafbd97e39c4dc08add725f3abd66 (diff) | |
drm/amdgpu: flush TLB if valid PDE turns into PTE
Mapping huge page, 2MB aligned address with 2MB size, uses PDE0 as PTE.
If previously valid PDE0, PDE0.V=1 and PDE0.P=0 turns into PTE, this
requires TLB flush, otherwise page table walker will not read updated
PDE0.
Change page table update mapping to return table_freed flag to indicate
the previously valid PDE may have turned into a PTE if page table is
freed.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@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_vm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 1ae5ea8db497..f8bb1e6ed254 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -231,6 +231,11 @@ struct amdgpu_vm_update_params { * @num_dw_left: number of dw left for the IB */ unsigned int num_dw_left; + + /** + * @table_freed: return true if page table is freed when updating + */ + bool table_freed; }; struct amdgpu_vm_update_funcs { @@ -404,7 +409,7 @@ int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, uint64_t flags, uint64_t offset, struct ttm_resource *res, dma_addr_t *pages_addr, - struct dma_fence **fence); + struct dma_fence **fence, bool *free_table); int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, bool clear); |