[PATCH 1/2] drm/amdgpu: don't clean the framebuffer for VF

[Yu, Xiangliang]

Acked-by: Xiangliang.Yu <Xiangliang.Yu at amd.com>


Thanks!
Xiangliang Yu


> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Pixel Ding
> Sent: Monday, February 06, 2017 2:25 PM
> To: amd-gfx at lists.freedesktop.org
> Cc: Ding, Pixel <Pixel.Ding at amd.com>; Ding.Pixel at amd.com
> Subject: [PATCH 1/2] drm/amdgpu: don't clean the framebuffer for VF
> 
> The SRIOV host driver cleans framebuffer for each VF, guest driver needn't
> this action which costs much time on some virtualization platform, otherwise
> it might get timeout to initialize.
> 
> Signed-off-by: Pixel Ding <Pixel.Ding at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
> index 1e735c4..f1eb4f5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
> @@ -242,7 +242,9 @@ static int amdgpufb_create(struct drm_fb_helper
> *helper,
>  	/* setup helper */
>  	rfbdev->helper.fb = fb;
> 
> -	memset_io(abo->kptr, 0x0, amdgpu_bo_size(abo));
> +	if (!amdgpu_sriov_vf(adev)) {
> +		memset_io(abo->kptr, 0x0, amdgpu_bo_size(abo));
> +	}
> 
>  	strcpy(info->fix.id, "amdgpudrmfb");
> 
> --
> 2.7.4
> 
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