[PATCH] drm/amdgpu: Update invalid PTE flag setting

Mukul Joshi mukul.joshi at amd.com
Tue Apr 4 21:59:23 UTC 2023


Update the invalid PTE flag setting to ensure, in addition
to transitioning the retry fault to a no-retry fault, it
also causes the wavefront to enter the trap handler. With the
current setting, it only transitions to a no-retry fault.

Signed-off-by: Mukul Joshi <mukul.joshi at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index af6f26a97fc5..5df4f7bb241f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2488,7 +2488,7 @@ bool amdgpu_vm_handle_fault(struct amdgpu_device *adev, u32 pasid,
 		/* Intentionally setting invalid PTE flag
 		 * combination to force a no-retry-fault
 		 */
-		flags = AMDGPU_PTE_SNOOPED | AMDGPU_PTE_PRT;
+		flags = AMDGPU_PTE_VALID | AMDGPU_PTE_SYSTEM | AMDGPU_PTE_PRT;
 		value = 0;
 	} else if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_NEVER) {
 		/* Redirect the access to the dummy page */
-- 
2.35.1



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