[PATCH 00/10] shadow page table support V4

[Zhou, David(ChunMing)]

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> -----Original Message-----
> From: Chunming Zhou [mailto:David1.Zhou at amd.com]
> Sent: Monday, August 15, 2016 2:07 PM
> To: amd-gfx at lists.freedesktop.org
> Cc: Zhou, David(ChunMing) <David1.Zhou at amd.com>
> Subject: [PATCH 00/10] shadow page table support V4
> 
> Since we cannot ensure VRAM is consistent after a GPU reset, page table
> shadowing is necessary. Shadowed page tables are, in a sense, a method to
> recover the consistent state of the page tables before the reset occurred.
> 
> We need to allocate GTT bo as the shadow of VRAM bo when creating page
> table, and make them the same. After gpu reset, we will need to use SDMA
> to copy GTT bo content to VRAM bo, then page table will be recoveried.
> 
> 
> V2:
> Shadow bo uses a shadow entity running on normal run queue, after gpu
> reset, we need to wait for all shadow jobs finished first, then recovery page
> table from shadow.
> 
> V3:
> Addressed Christian comments for shadow bo part.
> 
> V4:
> Switch back to update page table twice (one of two is for shadow)
> 
> Chunming Zhou (10):
>   drm/amdgpu: add direct submision option for copy_buffer
>   drm/amdgpu: sync bo and shadow V2
>   drm/amdgpu: implement vm recovery function from shadow V2
>   drm/amdgpu: update pd shadow while updating pd
>   drm/amdgpu: update pt shadow while updating pt
>   drm/amdgpu: link all vm clients
>   drm/amdgpu: add vm_list_lock
>   drm/amdgpu: recover page tables after gpu reset
>   drm/amdgpu: add need backup function
>   drm/amdgpu: add backup condition for vm
> 
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h           |  14 ++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c |   3 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c        |   6 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |  38 +++++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.c    |  43 +++++++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.h    |   5 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_test.c      |   4 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c       |  21 +++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c        | 163
> +++++++++++++++++++++-----
>  9 files changed, 257 insertions(+), 40 deletions(-)
> 
> --
> 1.9.1