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| author | Jonathan Kim <[email protected]> | 2021-12-09 21:48:56 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2022-01-14 22:52:00 +0000 |
| commit | cb5cc4f573e18deb7d9143de0ccb62c08181bc85 (patch) | |
| tree | b3f34dec7112248a460d5b6ceff3a8f6aacc5158 /drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.h | |
| parent | drm/amdgpu: Removed redundant ras code (diff) | |
| download | kernel-cb5cc4f573e18deb7d9143de0ccb62c08181bc85.tar.gz kernel-cb5cc4f573e18deb7d9143de0ccb62c08181bc85.zip | |
drm/amdgpu: improve debug VRAM access performance using sdma
For better performance during VRAM access for debugged processes, do
read/write copies over SDMA.
In order to fulfill post mortem debugging on a broken device, fallback to
stable MMIO access when gpu recovery is disabled or when job submission
time outs are set to max. Failed SDMA access should automatically fall
back to MMIO access.
Use a pre-allocated GTT bounce buffer pre-mapped into GART to avoid
page-table updates and TLB flushes on access.
Signed-off-by: Jonathan Kim <[email protected]>
Reviewed-by: Felix Kuehling <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.h')
0 files changed, 0 insertions, 0 deletions