From: Philip Yang Date: Tue, 10 May 2022 14:29:54 +0000 (-0400) Subject: drm/amdgpu: vm flush needed after updating PDEs X-Git-Tag: v5.19-rc1~153^2~3^2~28 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5be323562c6a699d38430bc068a3fd192be8ed0d;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: vm flush needed after updating PDEs 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 Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 7276b03ef9701..9596c22fded6c 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,