[PATCH] drm/amdkfd: SVM map to gpus check vma boundary

[Philip Yang]

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.y...@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 110c46cd7fac..2e3ee9c46a10 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1178,7 +1178,9 @@ 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 &&
+                   i + 1 < offset + npages &&
                    last_domain == (dma_addr[i + 1] & SVM_RANGE_VRAM_DOMAIN))
                        continue;
 
-- 
2.17.1