drm/amdgpu: attach tlb fence to the PTs update

prliangpub · alexdeucher · commit b4a7f4e7ad2b · 2025-11-26T12:33:05.000-05:00
Ensure the userq TLB flush is emitted only after the VM update finishes and the PT BOs have been annotated with bookkeeping fences. Suggested-by: Christian König <christian.koenig@amd.com> Signed-off-by: Prike Liang <Prike.Liang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit f3854e0) Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1066,7 +1066,7 @@ amdgpu_vm_tlb_flush(struct amdgpu_vm_update_params *params,
 	}
 
 	/* Prepare a TLB flush fence to be attached to PTs */
-	if (!params->unlocked && vm->is_compute_context) {
+	if (!params->unlocked) {
 		amdgpu_vm_tlb_fence_create(params->adev, vm, fence);
 
 		/* Makes sure no PD/PT is freed before the flush */

Original file line number	Diff line number	Diff line change
`@@ -1066,7 +1066,7 @@ amdgpu_vm_tlb_flush(struct amdgpu_vm_update_params *params,`
`1066`	`1066`	`}`
`1067`	`1067`
`1068`	`1068`	`/* Prepare a TLB flush fence to be attached to PTs */`
`1069`		`- if (!params->unlocked && vm->is_compute_context) {`
	`1069`	`+ if (!params->unlocked) {`
`1070`	`1070`	`amdgpu_vm_tlb_fence_create(params->adev, vm, fence);`
`1071`	`1071`
`1072`	`1072`	`/* Makes sure no PD/PT is freed before the flush */`