Check and pass the readonly flags when set amdgpu_ttm_tt flags
for readonly ptr pages. Otherwise, there is EPERM error returned
during the KFDExceptionTest.PermissionFaultUserPointer test on
ploaris10.
Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index d426333e865a..85d1087439c0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -1036,10 +1036,17 @@ static int init_user_pages(struct kgd_mem *mem, uint64_t user_addr,
struct ttm_operation_ctx ctx = { true, false };
struct hmm_range *range;
int ret = 0;
+ uint32_t tt_flags = 0;
mutex_lock(&process_info->lock);
- ret = amdgpu_ttm_tt_set_userptr(&bo->tbo, user_addr, 0);
+ if (!(mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE))
+ tt_flags |= AMDGPU_GEM_USERPTR_READONLY;
+ else
+ tt_flags = 0;
+
+
+ ret = amdgpu_ttm_tt_set_userptr(&bo->tbo, user_addr, tt_flags);
if (ret) {
pr_err("%s: Failed to set userptr: %d\n", __func__, ret);
goto out;
--
2.34.1
