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drm/amdgpu: vm flush needed after updating PDEs

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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@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang
2022-05-10 10:29:54 -04:00
committed by Alex Deucher
parent 688ea54949
commit 5be323562c
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@@ -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,