drm/amdgpu: attach tlb fence to the PTs update

prliangpub · alexdeucher · commit f3854e04b708 · 2025-11-26T11:50:43.000-05:00
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 &lt;christian.koenig@amd.com&gt;
Signed-off-by: Prike Liang &lt;Prike.Liang@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1069,7 +1069,7 @@ 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
`@@ -1069,7 +1069,7 @@ amdgpu_vm_tlb_flush(struct amdgpu_vm_update_params *params,`
`1069`	`1069`	`}`
`1070`	`1070`
`1071`	`1071`	`/* Prepare a TLB flush fence to be attached to PTs */`
`1072`		`- if (!params->unlocked && vm->is_compute_context) {`
	`1072`	`+ if (!params->unlocked) {`
`1073`	`1073`	`amdgpu_vm_tlb_fence_create(params->adev, vm, fence);`
`1074`	`1074`
`1075`	`1075`	`/* Makes sure no PD/PT is freed before the flush */`