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Date: Wed, 16 Oct 2013 13:43:00 -0300
From: Mauro Carvalho Chehab <m.chehab@...sung.com>
To: "Chen, Gong" <gong.chen@...ux.intel.com>
Cc: tony.luck@...el.com, bp@...en8.de, joe@...ches.com,
naveen.n.rao@...ux.vnet.ibm.com, arozansk@...hat.com,
linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/9] ACPI, APEI,
CPER: Add UEFI 2.4 support for memory error
Em Wed, 16 Oct 2013 10:56:03 -0400
"Chen, Gong" <gong.chen@...ux.intel.com> escreveu:
> 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 on actual DIMM location.
>
> Original-author: Tony Luck <tony.luck@...el.com>
> Signed-off-by: Chen, Gong <gong.chen@...ux.intel.com>
> Reviewed-by: Borislav Petkov <bp@...e.de>
Reviewed-by: Mauro Carvalho Chehab <m.chehab@...sung.com>
> ---
> arch/x86/kernel/cpu/mcheck/mce-apei.c | 3 +--
> drivers/acpi/apei/cper.c | 7 ++++---
> drivers/acpi/apei/ghes.c | 4 ++--
> drivers/edac/ghes_edac.c | 5 ++---
> include/linux/cper.h | 11 +++++++++--
> 5 files changed, 18 insertions(+), 12 deletions(-)
>
> diff --git a/arch/x86/kernel/cpu/mcheck/mce-apei.c b/arch/x86/kernel/cpu/mcheck/mce-apei.c
> index cd8b166..de8b60a 100644
> --- a/arch/x86/kernel/cpu/mcheck/mce-apei.c
> +++ b/arch/x86/kernel/cpu/mcheck/mce-apei.c
> @@ -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);
> diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c
> index eb5f6d6..946ef52 100644
> --- a/drivers/acpi/apei/cper.c
> +++ b/drivers/acpi/apei/cper.c
> @@ -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)
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 0db6e4f..a30bc31 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -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);
> }
> diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
> index bb53467..0ad797b 100644
> --- a/drivers/edac/ghes_edac.c
> +++ b/drivers/edac/ghes_edac.c
> @@ -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;
> diff --git a/include/linux/cper.h b/include/linux/cper.h
> index 09ebe21..2fc0ec3 100644
> --- a/include/linux/cper.h
> +++ b/include/linux/cper.h
> @@ -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 {
--
Cheers,
Mauro
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