> 代表 Liu, Monk
<monk@amd.com>
发送时间: 2017年1月22日 10:47:03
收件人: Christian König; amd-gfx@lists.freedesktop.org
主题: 答复: [PATCH] drm/amdgpu:guarantee 128dws between vm flush and IB(v3)
1, windows separate vm flush and gfx submit, so if with vm flush windows
actually submit 256 dw totally
1, windows separate vm flush and gfx submit, so if with vm flush windows
actually submit 256 dw totally (128 for vm flush and 128 for gfx submit)
2, for gfx submit frame: windows always emit pipeline sync(name is
"w0ait_3d_idle" for windows)
3, for vm flush frame: windows always emit pipeline
*发件人:* amd-gfx <amd-gfx-boun...@lists.freedesktop.org> 代表 Christian
König <deathsim...@vodafone.de>
*发送时间:* 2017年1月18日 20:52:14
*收件人:* Liu, Monk; amd-gfx@lists.freedesktop.org
*主题:* Re: 答复: [PATCH] drm/amdgpu:guarantee 128dws between vm f
发件人: amd-gfx <amd-gfx-boun...@lists.freedesktop.org> 代表 Christian König
<deathsim...@vodafone.de>
发送时间: 2017年1月18日 20:52:14
收件人: Liu, Monk; amd-gfx@lists.freedesktop.org
主题: Re: 答复: [PATCH] drm/amdgpu:guarantee 128dws between vm flush and I
suppose hw_submit_count in gpu_scheduler is 2 (by default), and
without suppress frame size under 256, we may sometime submit 256dw,
and sometime submit 512 dw, and that could lead to CPU override ring
buffer content which is under processing by GPU, e.g. :
The max_dw parameter for
>First question why do we want to limit the dw per submit to 256? Some
>limitation for SRIOV?
[ML]
suppose hw_submit_count in gpu_scheduler is 2 (by default), and without
suppress frame size under 256, we may sometime submit 256dw, and sometime
submit 512 dw, and that could lead to CPU
