Re: [PATCH 1/4] drm/amdgpu: Movie the amdgpu_gtt_mgr start and size from pages to bytes

[Christian König <christian.koenig@xxxxxxx>]

Am 25.01.23 um 11:00 schrieb Somalapuram Amaranath:
> To support GTT manager amdgpu_res_first, amdgpu_res_next
> from pages to bytes and clean up PAGE_SHIFT operation.

You really need to think more about the order and integrity of your 
patches. Keep in mind that each patch on its own should be applicable 
without breaking anything.

This change here won't work without the changes in the follow up patches.

So patches #3 and #4 should come first, because they are stand alone 
cleanups which can be pushed immediately after review.

Regards,
Christian.

> Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram@xxxxxxx>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h
> index 5c4f93ee0c57..5c78f0b09351 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_res_cursor.h
> @@ -94,8 +94,8 @@ static inline void amdgpu_res_first(struct ttm_resource *res,
>   		while (start >= node->size << PAGE_SHIFT)
>   			start -= node++->size << PAGE_SHIFT;
>   
> -		cur->start = (node->start << PAGE_SHIFT) + start;
> -		cur->size = min((node->size << PAGE_SHIFT) - start, size);
> +		cur->start = node->start + start;
> +		cur->size = min(node->size - start, size);
>   		cur->remaining = size;
>   		cur->node = node;
>   		break;
> @@ -155,8 +155,8 @@ static inline void amdgpu_res_next(struct amdgpu_res_cursor *cur, uint64_t size)
>   		node = cur->node;
>   
>   		cur->node = ++node;
> -		cur->start = node->start << PAGE_SHIFT;
> -		cur->size = min(node->size << PAGE_SHIFT, cur->remaining);
> +		cur->start = node->start;
> +		cur->size = min(node->size, cur->remaining);
>   		break;
>   	default:
>   		return;