Re: [PATCH] drm/amd/amdgpu: Modify sdma instance number

["Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Am 21.08.19 um 16:32 schrieb Gang Ba:
> To upgrade performance in small bar mode, set sdma buffer function
> ring and pte function ring to use different instance.

NAK, we intentionally reserved the first paging queue here.

I wanted to revert that as well, but in this case you would need to 
revert the whole patch and not just this change.

Just look for the patch adding that line and completely revert it instead.

Regards,
Christian.

>
> Change-Id: Ida6377914eb68a188f745e63409f344f0ce1a8c4
> Signed-off-by: Gang Ba <gaba@amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> index 071d6c9..5aca9bb4a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> @@ -2500,7 +2500,7 @@ static void sdma_v4_0_set_buffer_funcs(struct amdgpu_device *adev)
>   {
>   	adev->mman.buffer_funcs = &sdma_v4_0_buffer_funcs;
>   	if (adev->sdma.has_page_queue && adev->sdma.num_instances > 1)
> -		adev->mman.buffer_funcs_ring = &adev->sdma.instance[1].page;
> +		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].page;
>   	else
>   		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
>   }

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