[PATCH] drm/amdgpu: miss PRT case when bo update

[Tao, Yintian]

Hi Christian

Many thanks for your review

Best Regards
Yintian Tao

-----Original Message-----
From: Koenig, Christian <Christian.Koenig at amd.com> 
Sent: 2020年3月16日 17:38
To: Tao, Yintian <Yintian.Tao at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>
Cc: amd-gfx at lists.freedesktop.org
Subject: Re: [PATCH] drm/amdgpu: miss PRT case when bo update

Am 16.03.20 um 08:52 schrieb Yintian Tao:
> Originally, only the PTE valid is taken in consider.
> The PRT case is missied when bo update which raise problem.
> We need add condition for PRT case.

Good catch, just one style nit pick below.

>
> Signed-off-by: Yintian Tao <yttao at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c 
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index 73398831196f..7a3e4514a00c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -1446,7 +1446,7 @@ static int amdgpu_vm_update_ptes(struct amdgpu_vm_update_params *params,
>   		uint64_t incr, entry_end, pe_start;
>   		struct amdgpu_bo *pt;
>   
> -		if (flags & AMDGPU_PTE_VALID) {
> +		if (flags & (AMDGPU_PTE_VALID | AMDGPU_PTE_PRT)) {
>   			/* make sure that the page tables covering the
>   			 * address range are actually allocated
>   			 */
> @@ -1605,7 +1605,6 @@ static int amdgpu_vm_bo_update_mapping(struct 
> amdgpu_device *adev,
>   
>   	if (flags & AMDGPU_PTE_VALID) {
>   		struct amdgpu_bo *root = vm->root.base.bo;
> -
>   		if (!dma_fence_is_signaled(vm->last_direct))

Please keep this empty line, it is required by the coding style guides.

With that fixed the patch is Reviewed-by: Christian König <christian.koenig at amd.com>.

Regards,
Christian.

>   			amdgpu_bo_fence(root, vm->last_direct, true);
>   
> @@ -1718,7 +1717,7 @@ static int amdgpu_vm_bo_split_mapping(struct amdgpu_device *adev,
>   					AMDGPU_GPU_PAGES_IN_CPU_PAGE;
>   			}
>   
> -		} else if (flags & AMDGPU_PTE_VALID) {
> +		} else if (flags & (AMDGPU_PTE_VALID | AMDGPU_PTE_PRT)) {
>   			addr += bo_adev->vm_manager.vram_base_offset;
>   			addr += pfn << PAGE_SHIFT;
>   		}