Make sure that we never allocate a page table for an invalidation operation.
Signed-off-by: Christian König <christian.koe...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 4de9b3300870..9af5bde885a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1416,15 +1416,15 @@ static int amdgpu_vm_update_ptes(struct
amdgpu_vm_update_params *params,
uint64_t incr, entry_end, pe_start;
struct amdgpu_bo *pt;
- /* make sure that the page tables covering the address range are
- * actually allocated
- */
- r = amdgpu_vm_alloc_pts(params->adev, params->vm, &cursor,
- params->direct);
- if (r)
- return r;
-
- pt = cursor.entry->base.bo;
+ if (flags & AMDGPU_PTE_VALID) {
+ /* make sure that the page tables covering the
+ * address range are actually allocated
+ */
+ r = amdgpu_vm_alloc_pts(params->adev, params->vm,
+ &cursor, params->direct);
+ if (r)
+ return r;
+ }
shift = amdgpu_vm_level_shift(adev, cursor.level);
parent_shift = amdgpu_vm_level_shift(adev, cursor.level - 1);
@@ -1453,6 +1453,10 @@ static int amdgpu_vm_update_ptes(struct
amdgpu_vm_update_params *params,
continue;
}
+ pt = cursor.entry->base.bo;
+ if (!pt)
+ return -ENOENT;
+
/* Looks good so far, calculate parameters for the update */
incr = (uint64_t)AMDGPU_GPU_PAGE_SIZE << shift;
mask = amdgpu_vm_entries_mask(adev, cursor.level);
--
2.17.1
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