drm/amd/ras: fix CPER command record retrieval

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The CPER command reports the next batch ID as the latest valid record
and does not handle a request starting at the write pointer. Batch trace
responses also copy only the ACA interpretation of the log union.

Report the latest valid CPER ID, select the preceding record for a write
pointer request, expose a bounded command transfer size, and copy the
complete log body for batch trace records.

Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Xiang Liu 2026-08-06 11:27:44 +08:00 • committed by Alex Deucher

parent 34d5db3e7d

commit bcd793c804

2 changed files with 19 additions and 6 deletions

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23

drivers/gpu/drm/amd/ras/core/cmd.c

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2

drivers/gpu/drm/amd/ras/core/cmd.h

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