; amd-gfx@lists.freedesktop.org
抄送: Deucher, Alexander; dan...@ffwll.ch; Koenig, Christian;
dri-de...@lists.freedesktop.org
主题: Re: 回复: 回复: [RFC PATCH 1/2] drm/amdgpu: Fix memory corruption due to
swapout and swapin
> swapout function create one swap storage which is filled with zero. And
I just sent out patch below yesterday. swapping unpopulated bo is useless
indeed.
[RFC PATCH 2/2] drm/ttm: skip swapout when ttm has no backend page.
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swapout function create one swap storage which is filled with zero. And set
ttm->page_flags as TTM_PAGE_FLAG_SWAPPED. Just because ttm has no backend page
this time, no real data is swapout to this swap storage.
That's the fundamental problem. A TT object which isn't populated
shouldn't be c
The problem is that ttm_bo_type_sg doesn't allocate a page array for the
TT object.
Christian.
Am 20.05.21 um 04:58 schrieb Pan, Xinhui:
[AMD Official Use Only]
I am not sure if we can create a ttm_bo_type_sg bo for userptr. But I have
another idea now. we can use flag AMDGPU_AMDKFD_CREATE_U
[AMD Official Use Only]
I am not sure if we can create a ttm_bo_type_sg bo for userptr. But I have
another idea now. we can use flag AMDGPU_AMDKFD_CREATE_USERPTR_BO to create the
userptr bo.
发件人: Kuehling, Felix
发送时间: 2021年5月19日 23:11
收件人: Christian Köni
[AMD Official Use Only]
swapout function create one swap storage which is filled with zero. And set
ttm->page_flags as TTM_PAGE_FLAG_SWAPPED. Just because ttm has no backend page
this time, no real data is swapout to this swap storage.
swapin function is called during populate as TTM_PAGE_FLAG
