If page table PDEs is evicted and restored, after updating PDEs, need
increase vm->tlb_seq, then amdgpu_vm_flush will flush TLB before command
submission.
Signed-off-by: Philip Yang <Philip.Yang@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 7276b03ef970..9596c22fded6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -764,6 +764,9 @@ int amdgpu_vm_update_pdes(struct amdgpu_device *adev,
if (r)
goto error;
+ /* vm_flush_needed after updating PDEs */
+ atomic64_inc(&vm->tlb_seq);
+
while (!list_empty(&vm->relocated)) {
entry = list_first_entry(&vm->relocated,
struct amdgpu_vm_bo_base,
--
2.35.1
