[PATCH 00/13] shadow page table support

Liu, Monk Monk.Liu at amd.com
Tue Jul 26 08:52:57 UTC 2016

Correction, after full asic reset

BR Monk

-----Original Message-----
From: Liu, Monk 
Sent: Tuesday, July 26, 2016 4:51 PM
To: 'Chunming Zhou' <David1.Zhou at amd.com>; amd-gfx at lists.freedesktop.org
Cc: Zhou, David(ChunMing) <David1.Zhou at amd.com>
Subject: RE: [PATCH 00/13] shadow page table support

Hi David

amdgpu_asic_reset will finally took over by SMU, which will reset GFX ip, BIF, etc.. but currently that logic will not clear VRAM at all, and no circuit drop will happen.
So with my understanding, no need to take care VRAM after full asic access...

BR Monk

-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf Of Chunming Zhou
Sent: Monday, July 25, 2016 3:22 PM
To: amd-gfx at lists.freedesktop.org
Cc: Zhou, David(ChunMing) <David1.Zhou at amd.com>
Subject: [PATCH 00/13] shadow page table support

Since we cannot make sure VRAM is safe after gpu reset, page table backup is neccessary, shadow page table is sense way to recovery page talbe when gpu reset happens.
We need to allocate GTT bo as the shadow of VRAM bo when creating page table, and make them same. After gpu reset, we will need to use SDMA to copy GTT bo content to VRAM bo, then page table will be recoveried.

Chunming Zhou (13):
  drm/amdgpu: add pd/pt bo shadow
  drm/amdgpu: update shadow pt bo while update pt
  drm/amdgpu: update pd shadow while updating pd
  drm/amdgpu: implement amdgpu_vm_recover_page_table_from_shadow
  drm/amdgpu: link all vm clients
  drm/amdgpu: add vm_list_lock
  drm/amd: add block entity function
  drm/amdgpu: recover page tables after gpu reset
  drm/amdgpu: add vm recover pt fence
  drm/amd: reset hw count when reset job
  drm/amd: fix deadlock of job_list_lock
  drm/amd: wait neccessary dependency before running job
  drm/amdgpu: fix sched deadoff

 drivers/gpu/drm/amd/amdgpu/amdgpu.h           |  17 ++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c        |  12 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |  30 ++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c       |   5 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c       |   5 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c        | 161 ++++++++++++++++++++++++--
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.c |  35 +++++-
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.h |   3 +
 8 files changed, 250 insertions(+), 18 deletions(-)


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