drm/amdgpu: Update PTE flags with TF enabled

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This patch updates the PTE flags when translate further (TF) is
enabled:
- With translate_further enabled, invalid PTEs can be 0. Reading
  consecutive invalid PTEs as 0 is considered a fault. To prevent
  this, ensure invalid PTEs have at least 1 bit set.
- The current invalid PTE flags settings to translate a retry fault
  into a no-retry fault, doesn't work with TF enabled. As a result,
  update invalid PTE flags settings which works for both TF enabled
  and disabled case.

Fixes: 352e683b72 ("drm/amdgpu: Enable translate_further to extend UTCL2 reach")
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Mukul Joshi 2022-09-07 10:46:58 -04:00 • committed by Alex Deucher

parent 3913f0179b

commit 876552e5d5

2 changed files with 6 additions and 4 deletions

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3

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

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7

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

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