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drm/amdgpu: Add kernel parameter support for ignoring bad page threshold

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When a GPU hits the bad_page_threshold, it will not be initialized by
the amdgpu driver. This means that the table cannot be cleared, nor can
information gathering be performed (getting serial number, BDF, etc).

If the bad_page_threshold kernel parameter is set to -2,
continue to initialize the GPU, while printing a warning to dmesg that
this action has been done

v2: squash in Luben's fix to restore RAS info reporting

Cc: Luben Tuikov <luben.tuikov@amd.com>
Cc: Mukul Joshi <Mukul.Joshi@amd.com>
Signed-off-by: Kent Russell <kent.russell@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Kent Russell
2021-10-19 10:05:07 -04:00
committed by Alex Deucher
parent 8483fdfea7
commit 68daadf3d6
3 changed files with 13 additions and 5 deletions
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15
drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
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@@ -1105,11 +1105,18 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
res = amdgpu_ras_eeprom_correct_header_tag(control,
RAS_TABLE_HDR_VAL);
} else {
*exceed_err_limit = true;
dev_err(adev->dev,
"RAS records:%d exceed threshold:%d, "
"GPU will not be initialized. Replace this GPU or increase the threshold",
dev_err(adev->dev, "RAS records:%d exceed threshold:%d",
control->ras_num_recs, ras->bad_page_cnt_threshold);
if (amdgpu_bad_page_threshold == -2) {
dev_warn(adev->dev, "GPU will be initialized due to bad_page_threshold = -2.");
res = 0;
} else {
*exceed_err_limit = true;
dev_err(adev->dev,
"RAS records:%d exceed threshold:%d, "
"GPU will not be initialized. Replace this GPU or increase the threshold",
control->ras_num_recs, ras->bad_page_cnt_threshold);
}
}
} else {
DRM_INFO("Creating a new EEPROM table");