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drm/amdkfd: SVM map to gpus check vma boundary

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SVM range may includes multiple VMAs with different vm_flags, if prange
page index is the last page of the VMA offset + npages, update GPU
mapping to create GPU page table with same VMA access permission.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang 2021-09-13 10:03:36 -04:00 committed by Alex Deucher
parent 6de0653f77
commit 7beb26dced
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/amd/amdkfd/kfd_svm.c
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@ -1178,7 +1178,11 @@ svm_range_map_to_gpu(struct amdgpu_device *adev, struct amdgpu_vm *vm,
for (i = offset; i < offset + npages; i++) {
last_domain = dma_addr[i] & SVM_RANGE_VRAM_DOMAIN;
dma_addr[i] &= ~SVM_RANGE_VRAM_DOMAIN;
if ((prange->start + i) < prange->last &&
/* Collect all pages in the same address range and memory domain
* that can be mapped with a single call to update mapping.
*/
if (i < offset + npages - 1 &&
last_domain == (dma_addr[i + 1] & SVM_RANGE_VRAM_DOMAIN))
continue;