Re: [PATCH 1/5] drm/amdgpu: allow variable BO struct creation

[Christian König <ckoenig.leichtzumerken@xxxxxxxxx>]

Am 05.03.21 um 15:35 schrieb Nirmoy Das:
> Allow allocating BO structures with different structure size
> than struct amdgpu_bo.
>
> Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 ++
>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 1 +
>   2 files changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 0bd22ed1dacf..745393472564 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -551,6 +551,8 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
>   
>   	acc_size = ttm_bo_dma_acc_size(&adev->mman.bdev, size,
>   				       sizeof(struct amdgpu_bo));
> +	if (bp->bo_ptr_size < sizeof(struct amdgpu_bo))
> +		bp->bo_ptr_size = sizeof(struct amdgpu_bo);

You should probably rather fix up all callers and make sure that the 
parameter structure is correctly filled in.

Christian.

>   
>   	bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
>   	if (bo == NULL)
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> index 8cd96c9330dd..848dc0a017dd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> @@ -40,6 +40,7 @@
>   struct amdgpu_bo_param {
>   	unsigned long			size;
>   	int				byte_align;
> +	u32				bo_ptr_size;
>   	u32				domain;
>   	u32				preferred_domain;
>   	u64				flags;

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