[PATCH 0/9] BAD GPU retirement policy by total bad pages

[Guchun Chen]

The series is to enable GPU retirement feature, which is trigged
when bad pages detected by RAS ECC exceed the threshold value.

When the saved bad pages written to eeprom reach the threshold,
one ras recovery will be issued immediately and the recovery will
fail to tell user that the GPU is BAD and needs to be retired for
further check.

During bootup, similar BAD GPU check is conducted as well when
eeprom get initialized, and it will break boot up for user's
awareness.

User could set bad_page_threshold=0 when probing amdgpu driver to
disable this feature and bring up GPU as usual.

Guchun Chen (9):
  drm/amdgpu: add bad page count threshold in module parameter
  drm/amdgpu: validate bad page threshold in ras
  drm/amdgpu: add bad gpu tag definition
  drm/amdgpu: break driver init process when it's bad GPU
  drm/amdgpu: skip bad page reservation once issuing from eeprom write
  drm/amdgpu: schedule ras recovery when reaching bad page threshold
  drm/amdgpu: break GPU recovery once it's bad
  drm/amdgpu: restore ras flags when user resets eeprom
  drm/amdgpu: calculate actual size instead of hardcode size

 drivers/gpu/drm/amd/amdgpu/amdgpu.h           |   1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |  29 ++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c       |  11 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c       |  77 ++++++++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h       |  19 ++-
 .../gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c    | 109 ++++++++++++++++--
 .../gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h    |   8 +-
 7 files changed, 230 insertions(+), 24 deletions(-)

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2.17.1