Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933232AbcKYSVQ (ORCPT ); Fri, 25 Nov 2016 13:21:16 -0500 Received: from foss.arm.com ([217.140.101.70]:52782 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755660AbcKYSVH (ORCPT ); Fri, 25 Nov 2016 13:21:07 -0500 Message-ID: <583880E0.8080705@arm.com> Date: Fri, 25 Nov 2016 18:20:16 +0000 From: James Morse User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.6.0 MIME-Version: 1.0 To: Tyler Baicar CC: marc.zyngier@arm.com, pbonzini@redhat.com, rkrcmar@redhat.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, rjw@rjwysocki.net, lenb@kernel.org, matt@codeblueprint.co.uk, robert.moore@intel.com, lv.zheng@intel.com, nkaje@codeaurora.org, zjzhang@codeaurora.org, mark.rutland@arm.com, akpm@linux-foundation.org, eun.taik.lee@samsung.com, sandeepa.s.prabhu@gmail.com, shijie.huang@arm.com, rruigrok@codeaurora.org, paul.gortmaker@windriver.com, tomasz.nowicki@linaro.org, fu.wei@linaro.org, rostedt@goodmis.org, bristot@redhat.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-efi@vger.kernel.org, Suzuki.Poulose@arm.com, punit.agrawal@arm.com, astone@redhat.com, harba@codeaurora.org, hanjun.guo@linaro.org Subject: Re: [PATCH V5 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1 References: <1479767763-27532-1-git-send-email-tbaicar@codeaurora.org> <1479767763-27532-3-git-send-email-tbaicar@codeaurora.org> In-Reply-To: <1479767763-27532-3-git-send-email-tbaicar@codeaurora.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8811 Lines: 243 Hi Tyler, On 21/11/16 22:35, Tyler Baicar wrote: > Currently when a RAS error is reported it is not timestamped. > The ACPI 6.1 spec adds the timestamp field to the generic error > data entry v3 structure. The timestamp of when the firmware > generated the error is now being reported. > diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c > index b79abc5..9063d68 100644 > --- a/drivers/acpi/apei/ghes.c > +++ b/drivers/acpi/apei/ghes.c > @@ -420,7 +420,8 @@ static void ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata, int > int flags = -1; > int sec_sev = ghes_severity(gdata->error_severity); > struct cper_sec_mem_err *mem_err; > - mem_err = (struct cper_sec_mem_err *)(gdata + 1); > + > + mem_err = acpi_hest_generic_data_payload(gdata); > > if (!(mem_err->validation_bits & CPER_MEM_VALID_PA)) > return; > @@ -450,14 +451,18 @@ static void ghes_do_proc(struct ghes *ghes, > { > int sev, sec_sev; > struct acpi_hest_generic_data *gdata; > + uuid_le sec_type; ghes.c doesn't include , but I see it already uses uuid_le_cmp(). Worth fixing as part of this patch? > > sev = ghes_severity(estatus->error_severity); > apei_estatus_for_each_section(estatus, gdata) { > sec_sev = ghes_severity(gdata->error_severity); > - if (!uuid_le_cmp(*(uuid_le *)gdata->section_type, > + sec_type = *(uuid_le *)gdata->section_type; > + You don't use sec_type again here, why change this? (should it be in a later patch?) > + if (!uuid_le_cmp(sec_type, > CPER_SEC_PLATFORM_MEM)) { > struct cper_sec_mem_err *mem_err; > - mem_err = (struct cper_sec_mem_err *)(gdata+1); > + > + mem_err = acpi_hest_generic_data_payload(gdata); > ghes_edac_report_mem_error(ghes, sev, mem_err); > > arch_apei_report_mem_error(sev, mem_err); > @@ -467,7 +472,8 @@ static void ghes_do_proc(struct ghes *ghes, > else if (!uuid_le_cmp(*(uuid_le *)gdata->section_type, > CPER_SEC_PCIE)) { > struct cper_sec_pcie *pcie_err; > - pcie_err = (struct cper_sec_pcie *)(gdata+1); > + > + pcie_err = acpi_hest_generic_data_payload(gdata); > if (sev == GHES_SEV_RECOVERABLE && > sec_sev == GHES_SEV_RECOVERABLE && > pcie_err->validation_bits & CPER_PCIE_VALID_DEVICE_ID && > diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c > index d425374..7e2439e 100644 > --- a/drivers/firmware/efi/cper.c > +++ b/drivers/firmware/efi/cper.c > @@ -32,6 +32,9 @@ > #include > #include > #include > +#include > +#include > +#include > > #define INDENT_SP " " > > @@ -386,13 +389,37 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, > pfx, pcie->bridge.secondary_status, pcie->bridge.control); > } > > +static void cper_estatus_print_section_v300(const char *pfx, > + const struct acpi_hest_generic_data_v300 *gdata) > +{ > + __u8 hour, min, sec, day, mon, year, century, *timestamp; > + > + if (gdata->validation_bits & ACPI_HEST_GEN_VALID_TIMESTAMP) { > + timestamp = (__u8 *)&(gdata->time_stamp); > + sec = bcd2bin(timestamp[0]); > + min = bcd2bin(timestamp[1]); > + hour = bcd2bin(timestamp[2]); > + day = bcd2bin(timestamp[4]); > + mon = bcd2bin(timestamp[5]); > + year = bcd2bin(timestamp[6]); > + century = bcd2bin(timestamp[7]); > + printk("%stime: %7s %02d%02d-%02d-%02d %02d:%02d:%02d\n", pfx, > + 0x01 & *(timestamp + 3) ? "precise" : "", century, > + year, mon, day, hour, min, sec); > + } > +} > + > static void cper_estatus_print_section( > - const char *pfx, const struct acpi_hest_generic_data *gdata, int sec_no) > + const char *pfx, struct acpi_hest_generic_data *gdata, int sec_no) > { > uuid_le *sec_type = (uuid_le *)gdata->section_type; > __u16 severity; > char newpfx[64]; > > + if (acpi_hest_generic_data_version(gdata) >= 3) > + cper_estatus_print_section_v300(pfx, > + (const struct acpi_hest_generic_data_v300 *)gdata); > + > severity = gdata->error_severity; > printk("%s""Error %d, type: %s\n", pfx, sec_no, > cper_severity_str(severity)); > @@ -403,14 +430,18 @@ static void cper_estatus_print_section( > > snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP); > if (!uuid_le_cmp(*sec_type, CPER_SEC_PROC_GENERIC)) { > - struct cper_sec_proc_generic *proc_err = (void *)(gdata + 1); > + struct cper_sec_proc_generic *proc_err; > + > + proc_err = acpi_hest_generic_data_payload(gdata); > printk("%s""section_type: general processor error\n", newpfx); > if (gdata->error_data_length >= sizeof(*proc_err)) > cper_print_proc_generic(newpfx, proc_err); > else > goto err_section_too_small; > } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) { > - struct cper_sec_mem_err *mem_err = (void *)(gdata + 1); > + struct cper_sec_mem_err *mem_err; > + > + mem_err = acpi_hest_generic_data_payload(gdata); > printk("%s""section_type: memory error\n", newpfx); > if (gdata->error_data_length >= > sizeof(struct cper_sec_mem_err_old)) > @@ -419,7 +450,9 @@ static void cper_estatus_print_section( > else > goto err_section_too_small; > } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) { > - struct cper_sec_pcie *pcie = (void *)(gdata + 1); > + struct cper_sec_pcie *pcie; > + > + pcie = acpi_hest_generic_data_payload(gdata); > printk("%s""section_type: PCIe error\n", newpfx); > if (gdata->error_data_length >= sizeof(*pcie)) > cper_print_pcie(newpfx, pcie, gdata); > @@ -438,7 +471,7 @@ void cper_estatus_print(const char *pfx, > const struct acpi_hest_generic_status *estatus) > { > struct acpi_hest_generic_data *gdata; > - unsigned int data_len, gedata_len; > + unsigned int data_len; > int sec_no = 0; > char newpfx[64]; > __u16 severity; > @@ -451,12 +484,12 @@ void cper_estatus_print(const char *pfx, > printk("%s""event severity: %s\n", pfx, cper_severity_str(severity)); > data_len = estatus->data_length; > gdata = (struct acpi_hest_generic_data *)(estatus + 1); > + > snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP); > - while (data_len >= sizeof(*gdata)) { > - gedata_len = gdata->error_data_length; > + > + while (data_len >= acpi_hest_generic_data_size(gdata)) { > cper_estatus_print_section(newpfx, gdata, sec_no); > - data_len -= gedata_len + sizeof(*gdata); > - gdata = (void *)(gdata + 1) + gedata_len; > + gdata = acpi_hest_generic_data_next(gdata); > sec_no++; > } > } > @@ -486,12 +519,13 @@ int cper_estatus_check(const struct acpi_hest_generic_status *estatus) > return rc; > data_len = estatus->data_length; > gdata = (struct acpi_hest_generic_data *)(estatus + 1); > - while (data_len >= sizeof(*gdata)) { > - gedata_len = gdata->error_data_length; > - if (gedata_len > data_len - sizeof(*gdata)) > + > + while (data_len >= acpi_hest_generic_data_size(gdata)) { > + gedata_len = acpi_hest_generic_data_error_length(gdata); > + if (gedata_len > data_len - acpi_hest_generic_data_size(gdata)) > return -EINVAL; > - data_len -= gedata_len + sizeof(*gdata); > - gdata = (void *)(gdata + 1) + gedata_len; > + data_len -= gedata_len + acpi_hest_generic_data_size(gdata); > + gdata = acpi_hest_generic_data_next(gdata); > } > if (data_len) > return -EINVAL; > diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h > index 68f088a..56b9679 100644 > --- a/include/acpi/ghes.h > +++ b/include/acpi/ghes.h > @@ -73,3 +73,13 @@ static inline void ghes_edac_unregister(struct ghes *ghes) > { > } > #endif > + > +#define acpi_hest_generic_data_version(gdata) \ > + (gdata->revision >> 8) > + > +static inline void *acpi_hest_generic_data_payload(struct acpi_hest_generic_data *gdata) > +{ > + return acpi_hest_generic_data_version(gdata) >= 3 ? > + (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1) : > + gdata + 1; > +} > diff --git a/include/linux/cper.h b/include/linux/cper.h > index dcacb1a..13ea41c 100644 > --- a/include/linux/cper.h > +++ b/include/linux/cper.h > @@ -255,6 +255,18 @@ enum { > > #define CPER_PCIE_SLOT_SHIFT 3 > > +#define acpi_hest_generic_data_error_length(gdata) \ > + (((struct acpi_hest_generic_data *)(gdata))->error_data_length) > +#define acpi_hest_generic_data_size(gdata) \ > + ((acpi_hest_generic_data_version(gdata) >= 3) ? \ > + sizeof(struct acpi_hest_generic_data_v300) : \ > + sizeof(struct acpi_hest_generic_data)) > +#define acpi_hest_generic_data_record_size(gdata) \ > + (acpi_hest_generic_data_size(gdata) + \ > + acpi_hest_generic_data_error_length(gdata)) > +#define acpi_hest_generic_data_next(gdata) \ > + ((void *)(gdata) + acpi_hest_generic_data_record_size(gdata)) > + How come these aren't in ghes.h? Reviewed-by: James Morse Thanks, James