[PATCH] drm/amdgpu: align frag_end to covered address space

[Christian König]

Am 05.10.20 um 16:40 schrieb Alex Sierra:
> align frag_end to the next pd when there are no
> page table entries on the current pde.

Maybe add something like "This fixes invalidation of larger address 
space areas where some page tables are allocated and other aren't".

>
> Signed-off-by: Alex Sierra <alex.sierra at amd.com>
> Signed-off-by: Christian König <christian.koenig at amd.com>

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

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index b41517d0f00c..3cd949aad500 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -1502,6 +1502,8 @@ static int amdgpu_vm_update_ptes(struct amdgpu_vm_update_params *params,
>   
>   			pt = cursor.entry->base.bo;
>   			shift = parent_shift;
> +			frag_end = max(frag_end, ALIGN(frag_start + 1,
> +				   1ULL << shift));
>   		}
>   
>   		/* Looks good so far, calculate parameters for the update */