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Commit ba61ca4a authored by Huang Ying's avatar Huang Ying Committed by Len Brown
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ACPI, APEI, GHES: Add hardware memory error recovery support 



memory_failure_queue() is called when recoverable memory errors are
notified by firmware to do the recovery work.

Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent ea8f5fb8

drivers/acpi/apei/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -32,6 +32,13 @@ config ACPI_APEI_PCIEAER 
	  PCIe AER errors may be reported via APEI firmware first mode.

	  Turn on this option to enable the corresponding support.



config ACPI_APEI_MEMORY_FAILURE

	bool "APEI memory error recovering support"

	depends on ACPI_APEI && MEMORY_FAILURE

	help

	  Memory errors may be reported via APEI firmware first mode.

	  Turn on this option to enable the memory recovering support.



config ACPI_APEI_EINJ

	tristate "APEI Error INJection (EINJ)"

	depends on ACPI_APEI && DEBUG_FS

drivers/acpi/apei/ghes.c

+17 −7
Original line number Diff line number Diff line
@@ -451,22 +451,32 @@ static void ghes_clear_estatus(struct ghes *ghes) 


static void ghes_do_proc(const struct acpi_hest_generic_status *estatus)

{

	int sev, processed = 0;

	int sev, sec_sev;

	struct acpi_hest_generic_data *gdata;



	sev = ghes_severity(estatus->error_severity);

	apei_estatus_for_each_section(estatus, gdata) {

#ifdef CONFIG_X86_MCE

		sec_sev = ghes_severity(gdata->error_severity);

		if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,

				 CPER_SEC_PLATFORM_MEM)) {

			apei_mce_report_mem_error(

				sev == GHES_SEV_CORRECTED,

				(struct cper_sec_mem_err *)(gdata+1));

			processed = 1;

			struct cper_sec_mem_err *mem_err;

			mem_err = (struct cper_sec_mem_err *)(gdata+1);

#ifdef CONFIG_X86_MCE

			apei_mce_report_mem_error(sev == GHES_SEV_CORRECTED,

						  mem_err);

#endif

#ifdef CONFIG_ACPI_APEI_MEMORY_FAILURE

			if (sev == GHES_SEV_RECOVERABLE &&

			    sec_sev == GHES_SEV_RECOVERABLE &&

			    mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {

				unsigned long pfn;

				pfn = mem_err->physical_addr >> PAGE_SHIFT;

				memory_failure_queue(pfn, 0, 0);

			}

#endif

		}

	}

}



static void __ghes_print_estatus(const char *pfx,

				 const struct acpi_hest_generic *generic,