[PATCH 00/13] shadow page table support

Chunming Zhou David1.Zhou at amd.com
Thu Jul 28 10:11:27 UTC 2016

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.

TODO: gart table should be saved as well, will generate a sperate patch set.

Chunming Zhou (13):
  drm/amdgpu: irq resume should be immediately after gpu resume
  drm/amdgpu: add shadow bo support
  drm/amdgpu: set shadow flag for pd/pt bo
  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/amd: wait neccessary dependency before running job
  drm/amdgpu: add vm recover pt fence
  drm/amdgpu: add backup condition for shadow page table

 drivers/gpu/drm/amd/amdgpu/amdgpu.h           |  15 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c        |   6 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |  33 +++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c       |   5 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c    |  36 ++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c        | 219 ++++++++++++++++++++++----
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.c |  30 +++-
 drivers/gpu/drm/amd/scheduler/gpu_scheduler.h |   3 +
 include/uapi/drm/amdgpu_drm.h                 |   2 +
 9 files changed, 316 insertions(+), 33 deletions(-)


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