Re: [PATCH 1/2] drm/ttm: Clean up page shift operation

["Christian König" <christian.koenig@amd.com>]

Am 16.11.22 um 09:50 schrieb Somalapuram Amaranath:
> remove page shift operations as ttm_resource moved
> from num_pages to size_t size in bytes.
>
> Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 4 +---
>   drivers/gpu/drm/ttm/ttm_range_manager.c    | 2 +-
>   2 files changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 974e85d8b6cc..19ad365dc159 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -541,12 +541,10 @@ int amdgpu_bo_create(struct amdgpu_device *adev,
>   	if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
>   		/* GWS and OA don't need any alignment. */
>   		page_align = bp->byte_align;
> -		size <<= PAGE_SHIFT;
> -
>   	} else if (bp->domain & AMDGPU_GEM_DOMAIN_GDS) {
>   		/* Both size and alignment must be a multiple of 4. */
>   		page_align = ALIGN(bp->byte_align, 4);
> -		size = ALIGN(size, 4) << PAGE_SHIFT;
> +		size = ALIGN(size, 4);
>   	} else {
>   		/* Memory should be aligned at least to a page size. */
>   		page_align = ALIGN(bp->byte_align, PAGE_SIZE) >> PAGE_SHIFT;
> diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c
> index 0a8bc0b7f380..4c7cba4ffdbf 100644
> --- a/drivers/gpu/drm/ttm/ttm_range_manager.c
> +++ b/drivers/gpu/drm/ttm/ttm_range_manager.c
> @@ -83,7 +83,7 @@ static int ttm_range_man_alloc(struct ttm_resource_manager *man,
>   
>   	spin_lock(&rman->lock);
>   	ret = drm_mm_insert_node_in_range(mm, &node->mm_nodes[0],
> -					  PFN_UP(node->base.size),
> +					  node->base.size,
>   					  bo->page_alignment, 0,
>   					  place->fpfn, lpfn, mode);

You need to make sure that fpfn and lpfn are now page shifted instead.

Same for the overlap and compatible functions.

Regards,
Christian.

>   	spin_unlock(&rman->lock);