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drm/amd/ras: assign BERT platform record ownership
IA processor and Platform Memory BERT sections are system-wide records and must not be copied into every GPU RAS ring. Per-socket GPU records still need to be offered to each matching GPU. Assign platform sections to the first eligible RAS instance and claim each GPU socket before parsing its cached BERT data. Serialize ownership with the shared mutex and retain the state until the final RAS device exits. 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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