Re: APEI: Can not request iomem region for GARs

[Huang Ying <ying.huang@intel.com>]

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Hi, Pavel,

On 08/27/2011 11:28 AM, Pavel Ivanov wrote:
> Huang,
> 
> I can confirm that new patch got rid of the old error message but
> introduced a new one:
> 
> ERST: Failed to get Error Log Address Range

Please try the attached patch to find why there is the error message.

> Also I noticed there's another suspicious message in dmesg and it was
> there earlier too (although it's not shown on console):
> 
> GHES: Failed to enable APEI firmware first mode
> 
> Is it bad? What does it mean?

It means you may receive a unknown NMI without GHES error record for
some detected hardware error.

Best Regards,
Huang Ying

[-- Attachment #2: dbg_erst_erange.patch --]
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---
 drivers/acpi/apei/erst.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -387,14 +387,17 @@ static int erst_get_erange(struct erst_e
 
 	erst_exec_ctx_init(&ctx);
 	rc = apei_exec_run(&ctx, ACPI_ERST_GET_ERROR_RANGE);
+	pr_info(ERST_PFX "get erange: %d\n", rc);
 	if (rc)
 		return rc;
 	range->base = apei_exec_ctx_get_output(&ctx);
 	rc = apei_exec_run(&ctx, ACPI_ERST_GET_ERROR_LENGTH);
+	pr_info(ERST_PFX "get erange length: %d\n", rc);
 	if (rc)
 		return rc;
 	range->size = apei_exec_ctx_get_output(&ctx);
 	rc = apei_exec_run(&ctx, ACPI_ERST_GET_ERROR_ATTRIBUTES);
+	pr_info(ERST_PFX "get erange attributes: %d\n", rc);
 	if (rc)
 		return rc;
 	range->attr = apei_exec_ctx_get_output(&ctx);