From patchwork Mon Sep 25 07:44:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuai Xue X-Patchwork-Id: 13397411 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3174610A1F; Mon, 25 Sep 2023 07:44:54 +0000 (UTC) Received: from out30-131.freemail.mail.aliyun.com (out30-131.freemail.mail.aliyun.com [115.124.30.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E69EB196; Mon, 25 Sep 2023 00:44:49 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R451e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046049;MF=xueshuai@linux.alibaba.com;NM=1;PH=DS;RN=22;SR=0;TI=SMTPD_---0Vsmvt1q_1695627884; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0Vsmvt1q_1695627884) by smtp.aliyun-inc.com; Mon, 25 Sep 2023 15:44:45 +0800 From: Shuai Xue To: keescook@chromium.org, tony.luck@intel.com, gpiccoli@igalia.com, rafael@kernel.org, lenb@kernel.org, james.morse@arm.com, bp@alien8.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, ardb@kernel.org, robert.moore@intel.com Cc: linux-hardening@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-efi@vger.kernel.org, acpica-devel@lists.linuxfoundation.org, xueshuai@linux.alibaba.com, baolin.wang@linux.alibaba.com Subject: [RFC PATCH v2 7/9] ACPI: APEI: ESRT: kick ghes_report_chain notifier to report serialized memory errors Date: Mon, 25 Sep 2023 15:44:24 +0800 Message-Id: <20230925074426.97856-8-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230925074426.97856-1-xueshuai@linux.alibaba.com> References: <20230925074426.97856-1-xueshuai@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-9.9 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Introduce a new pstore_record type, PSTORE_TYPE_CPER_MEM, so that serialized memory errors can be retrieved and saved as a file in pstore file system. While the serialized errors is retrieved from ERST backend, kick ghes_report_chain notifier. Signed-off-by: Shuai Xue --- drivers/acpi/apei/erst.c | 5 +++++ fs/pstore/platform.c | 1 + include/linux/pstore.h | 3 +++ 3 files changed, 9 insertions(+) diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index 82f57aaf89ad..786d46c767ee 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -26,6 +26,7 @@ #include #include /* kvfree() */ #include +#include #ifdef CONFIG_X86_MCE /* only define CREATE_TRACE_POINTS once */ #include @@ -1072,6 +1073,10 @@ static ssize_t erst_reader(struct pstore_record *record) trace_mce_record((struct mce *)rcd->data); #endif record->type = PSTORE_TYPE_MCE; + } else if (guid_equal(&rcd->sec_hdr.section_type, &CPER_SEC_PLATFORM_MEM)) { + record->type = PSTORE_TYPE_CPER_MEM; + arch_apei_report_mem_error(0x2, (struct cper_sec_mem_err *)rcd->data); + atomic_notifier_call_chain(&ghes_report_chain, 0x2, rcd->data); } else record->type = PSTORE_TYPE_MAX; diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index e5bca9a004cc..4e63ac8be755 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -51,6 +51,7 @@ static const char * const pstore_type_names[] = { "powerpc-common", "pmsg", "powerpc-opal", + "cper-mem", }; static int pstore_new_entry; diff --git a/include/linux/pstore.h b/include/linux/pstore.h index ad44b3baf10e..d18ecaacd1b5 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -40,6 +40,9 @@ enum pstore_type_id { PSTORE_TYPE_PMSG = 7, PSTORE_TYPE_PPC_OPAL = 8, + /* APEI section */ + PSTORE_TYPE_CPER_MEM = 9, + /* End of the list */ PSTORE_TYPE_MAX };