Commit 147de147 authored by Chen, Gong's avatar Chen, Gong Committed by Tony Luck
Browse files

ACPI, APEI, CPER: Add UEFI 2.4 support for memory error 



In latest UEFI spec(by now it is 2.4) memory error definition
for CPER (UEFI 2.4 Appendix N Common Platform Error Record)
adds some new fields. These fields help people to locate
memory error to an actual DIMM location.

Original-author: Tony Luck <tony.luck@intel.com>
Signed-off-by: default avatarChen, Gong <gong.chen@linux.intel.com>
Reviewed-by: default avatarBorislav Petkov <bp@suse.de>
Reviewed-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
Acked-by: default avatarNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent dd6dad42

arch/x86/kernel/cpu/mcheck/mce-apei.c

+1 −2
Original line number Diff line number Diff line
@@ -42,8 +42,7 @@ void apei_mce_report_mem_error(int corrected, struct cper_sec_mem_err *mem_err) 
	struct mce m;



	/* Only corrected MC is reported */

	if (!corrected || !(mem_err->validation_bits &

				CPER_MEM_VALID_PHYSICAL_ADDRESS))

	if (!corrected || !(mem_err->validation_bits & CPER_MEM_VALID_PA))

		return;



	mce_setup(&m);

drivers/acpi/apei/cper.c

+4 −3
Original line number Diff line number Diff line
@@ -8,7 +8,7 @@ 
 * various tables, such as ERST, BERT and HEST etc.

 *

 * For more information about CPER, please refer to Appendix N of UEFI

 * Specification version 2.3.

 * Specification version 2.4.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License version
@@ -191,16 +191,17 @@ static const char *cper_mem_err_type_strs[] = { 
	"memory sparing",

	"scrub corrected error",

	"scrub uncorrected error",

	"physical memory map-out event",

};



static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem)

{

	if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)

		printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);

	if (mem->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS)

	if (mem->validation_bits & CPER_MEM_VALID_PA)

		printk("%s""physical_address: 0x%016llx\n",

		       pfx, mem->physical_addr);

	if (mem->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK)

	if (mem->validation_bits & CPER_MEM_VALID_PA_MASK)

		printk("%s""physical_address_mask: 0x%016llx\n",

		       pfx, mem->physical_addr_mask);

	if (mem->validation_bits & CPER_MEM_VALID_NODE)

drivers/acpi/apei/ghes.c

+2 −2
Original line number Diff line number Diff line
@@ -419,7 +419,7 @@ static void ghes_handle_memory_failure(struct acpi_generic_data *gdata, int sev) 


	if (sec_sev == GHES_SEV_CORRECTED &&

	    (gdata->flags & CPER_SEC_ERROR_THRESHOLD_EXCEEDED) &&

	    (mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS)) {

	    (mem_err->validation_bits & CPER_MEM_VALID_PA)) {

		pfn = mem_err->physical_addr >> PAGE_SHIFT;

		if (pfn_valid(pfn))

			memory_failure_queue(pfn, 0, MF_SOFT_OFFLINE);
@@ -430,7 +430,7 @@ static void ghes_handle_memory_failure(struct acpi_generic_data *gdata, int sev) 
	}

	if (sev == GHES_SEV_RECOVERABLE &&

	    sec_sev == GHES_SEV_RECOVERABLE &&

	    mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {

	    mem_err->validation_bits & CPER_MEM_VALID_PA) {

		pfn = mem_err->physical_addr >> PAGE_SHIFT;

		memory_failure_queue(pfn, 0, 0);

	}

drivers/edac/ghes_edac.c

+2 −3
Original line number Diff line number Diff line
@@ -297,15 +297,14 @@ void ghes_edac_report_mem_error(struct ghes *ghes, int sev, 
	}



	/* Error address */

	if (mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {

	if (mem_err->validation_bits & CPER_MEM_VALID_PA) {

		e->page_frame_number = mem_err->physical_addr >> PAGE_SHIFT;

		e->offset_in_page = mem_err->physical_addr & ~PAGE_MASK;

	}



	/* Error grain */

	if (mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK) {

	if (mem_err->validation_bits & CPER_MEM_VALID_PA_MASK)

		e->grain = ~(mem_err->physical_addr_mask & ~PAGE_MASK);

	}



	/* Memory error location, mapped on e->location */

	p = e->location;

include/linux/cper.h

+9 −2
Original line number Diff line number Diff line
@@ -218,8 +218,8 @@ enum { 
#define CPER_PROC_VALID_IP			0x1000



#define CPER_MEM_VALID_ERROR_STATUS		0x0001

#define CPER_MEM_VALID_PHYSICAL_ADDRESS		0x0002

#define CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK	0x0004

#define CPER_MEM_VALID_PA			0x0002

#define CPER_MEM_VALID_PA_MASK			0x0004

#define CPER_MEM_VALID_NODE			0x0008

#define CPER_MEM_VALID_CARD			0x0010

#define CPER_MEM_VALID_MODULE			0x0020
@@ -232,6 +232,9 @@ enum { 
#define CPER_MEM_VALID_RESPONDER_ID		0x1000

#define CPER_MEM_VALID_TARGET_ID		0x2000

#define CPER_MEM_VALID_ERROR_TYPE		0x4000

#define CPER_MEM_VALID_RANK_NUMBER		0x8000

#define CPER_MEM_VALID_CARD_HANDLE		0x10000

#define CPER_MEM_VALID_MODULE_HANDLE		0x20000



#define CPER_PCIE_VALID_PORT_TYPE		0x0001

#define CPER_PCIE_VALID_VERSION			0x0002
@@ -347,6 +350,10 @@ struct cper_sec_mem_err { 
	__u64	responder_id;

	__u64	target_id;

	__u8	error_type;

	__u8	reserved;

	__u16	rank;

	__u16	mem_array_handle;	/* card handle in UEFI 2.4 */

	__u16	mem_dev_handle;		/* module handle in UEFI 2.4 */

};



struct cper_sec_pcie {

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