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{ "id": 810082, "url": "http://patchwork.ozlabs.org/api/covers/810082/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/cover/1504609566-66318-1-git-send-email-xiexiuqi@huawei.com/", "project": { "id": 19, "url": "http://patchwork.ozlabs.org/api/projects/19/?format=api", "name": "Linux IMX development", "link_name": "linux-imx", "list_id": "linux-imx-kernel.lists.patchwork.ozlabs.org", "list_email": "linux-imx-kernel@lists.patchwork.ozlabs.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1504609566-66318-1-git-send-email-xiexiuqi@huawei.com>", "list_archive_url": null, "date": "2017-09-05T11:06:03", "name": "[v2,0/3] arm64/ras: support sea error recovery", "submitter": { "id": 24815, "url": "http://patchwork.ozlabs.org/api/people/24815/?format=api", "name": "Xie XiuQi", "email": "xiexiuqi@huawei.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-imx/cover/1504609566-66318-1-git-send-email-xiexiuqi@huawei.com/mbox/", "series": [ { "id": 1551, "url": "http://patchwork.ozlabs.org/api/series/1551/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-imx/list/?series=1551", "date": "2017-09-05T11:06:03", "name": "arm64/ras: support sea error recovery", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/1551/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/810082/comments/", "headers": { "Return-Path": "<linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming-imx@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming-imx@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.infradead.org\n\t(client-ip=65.50.211.133; helo=bombadil.infradead.org;\n\tenvelope-from=linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=lists.infradead.org\n\theader.i=@lists.infradead.org\n\theader.b=\"qlIj6zh1\"; dkim-atps=neutral" ], "Received": [ "from bombadil.infradead.org (bombadil.infradead.org\n\t[65.50.211.133])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xmkSD43sJz9s83\n\tfor <incoming-imx@patchwork.ozlabs.org>;\n\tTue, 5 Sep 2017 21:06:52 +1000 (AEST)", "from localhost ([127.0.0.1] helo=bombadil.infradead.org)\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1dpBgu-00077z-PX; Tue, 05 Sep 2017 11:06:48 +0000", "from szxga04-in.huawei.com ([45.249.212.190])\n\tby bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux))\n\tid 1dpBfu-0005qq-QH for linux-arm-kernel@lists.infradead.org;\n\tTue, 05 Sep 2017 11:05:53 +0000", "from 172.30.72.58 (EHLO DGGEMS411-HUB.china.huawei.com)\n\t([172.30.72.58])\n\tby dggrg04-dlp.huawei.com (MOS 4.4.6-GA FastPath queued)\n\twith ESMTP id DGO22104; Tue, 05 Sep 2017 19:05:16 +0800 (CST)", "from localhost.localdomain.localdomain (10.175.113.25) by\n\tDGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP\n\tServer id 14.3.301.0; Tue, 5 Sep 2017 19:05:08 +0800" ], "DKIM-Signature": "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20170209; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To\n\t:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:\n\tResent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:\n\tList-Owner; bh=hFOUPIjkEjv6NWFVOFcz7RN/fPVLYVzsDez13+NGrak=;\n\tb=qlIj6zh1e8zop0\n\tl1bYfuIadi1cq/CDCyuwVDrtuumNiiR3eo7Iqc6yIep1suAIF85aEXgAhTRISaQ3l8vdOxP3NHV/1\n\tckqEpYiVOqT22EuRNkGgVh3+4Zxy7sQCVyBRDOMAHQ7rzDkIEjlvKFmgpVU1E6R4x9fzGNNV/KhDg\n\tokzHeN4wfEQ7PuFEnLXn7rVa+wquke6jPUrSs67L9y+xKWf4qLmJUnBPqHe8QsqZmk9uJHZDODKx5\n\temsVAl69nvdqGPe3kUbzFvvlzDIXWlcSnzakEU3U8NOJ98yEWbmyPVZBegPkbxb9TIvgBGsMyK2VV\n\tTH/5yrpesiTeq2wB3Rlg==;", "From": "Xie XiuQi <xiexiuqi@huawei.com>", "To": "<catalin.marinas@arm.com>, <will.deacon@arm.com>, <mingo@redhat.com>,\n\t<mark.rutland@arm.com>, <ard.biesheuvel@linaro.org>,\n\t<james.morse@arm.com>, <Dave.Martin@arm.com>,\n\t<takahiro.akashi@linaro.org>, <tbaicar@codeaurora.org>,\n\t<stephen.boyd@linaro.org>, <bp@suse.de>, <shiju.jose@huawei.com>,\n\t<zjzhang@codeaurora.org>", "Subject": "[PATCH v2 0/3] arm64/ras: support sea error recovery", "Date": "Tue, 5 Sep 2017 19:06:03 +0800", "Message-ID": "<1504609566-66318-1-git-send-email-xiexiuqi@huawei.com>", "X-Mailer": "git-send-email 1.8.3.1", "MIME-Version": "1.0", "X-Originating-IP": "[10.175.113.25]", "X-CFilter-Loop": "Reflected", "X-Mirapoint-Virus-RAPID-Raw": "score=unknown(0),\n\trefid=str=0001.0A020206.59AE84ED.000C, ss=1, re=0.000, recu=0.000,\n\treip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0,\n\tso=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32", "X-Mirapoint-Loop-Id": "10d95c733978a5e12eedc87d22bd0446", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20170905_040547_951040_0ABA56A5 ", "X-CRM114-Status": "GOOD ( 11.54 )", "X-Spam-Score": "-1.9 (-)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-1.9 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t-0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay\n\tdomain\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]", "X-BeenThere": "linux-arm-kernel@lists.infradead.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-arm-kernel/>", "List-Post": "<mailto:linux-arm-kernel@lists.infradead.org>", "List-Help": "<mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,\n\t<mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>", "Cc": "wangkefeng.wang@huawei.com, xiexiuqi@huawei.com,\n\tlinux-kernel@vger.kernel.org, gengdongjiu@huawei.com,\n\tlijinyue@huawei.com, \n\tlinux-acpi@vger.kernel.org, huawei.libin@huawei.com,\n\tguohanjun@huawei.com, \n\tzhengqiang10@huawei.com, wangxiongfeng2@huawei.com,\n\tlinux-arm-kernel@lists.infradead.org", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-arm-kernel\" <linux-arm-kernel-bounces@lists.infradead.org>", "Errors-To": "linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org", "List-Id": "linux-imx-kernel.lists.patchwork.ozlabs.org" }, "content": "With ARM v8.2 RAS Extension, SEA are usually triggered when memory errors\nare consumed. In some cases, if the error address is in a clean page or a\nread-only page, there is a chance to recover. Such as error occurs in a\ninstruction page, we can reread this page from disk instead of killing process.\n\nBecause memory_failure() may sleep, we can not call it directly in SEA exception\ncontext. So we saved faulting physical address associated with a process in the\nghes handler and set __TIF_SEA_NOTIFY. When we return from SEA exception context\nand get into do_notify_resume() before the process running, we could check it\nand call memory_failure() to do recovery. It's safe, because we are in process\ncontext.\n\nIn some platform, when SEA triggerred, physical address could be\nreported by memory section or by processor section, so we save \naddress at this two place.\n\nThis patchset is only for internal review, and it's only compiled OK,\nnot yet tested now.\n\n---\nv2 - v1:\n - wrap arm_proc_error_check and log_arm_hw_error in a single arm_process_error()\n - fix sea_save_info return value issue\n - fix link error if this CONFIG_ARM64_ERR_RECOV is not selected\n - use a notify chain instead of call arch_apei_report_mem_error directly\n\n https://lkml.org/lkml/2017/9/1/189\n\nXie XiuQi (3):\n arm64/ras: support sea error recovery\n GHES: add a notify chain for process memory section\n arm64/ras: save error address from memory section for recovery\n\n arch/arm64/Kconfig | 11 +++\n arch/arm64/include/asm/ras.h | 36 ++++++++\n arch/arm64/include/asm/thread_info.h | 4 +-\n arch/arm64/kernel/Makefile | 1 +\n arch/arm64/kernel/ras.c | 174 +++++++++++++++++++++++++++++++++++\n arch/arm64/kernel/signal.c | 8 ++\n arch/arm64/mm/fault.c | 27 ++++--\n drivers/acpi/apei/ghes.c | 14 ++-\n include/acpi/ghes.h | 8 ++\n 9 files changed, 272 insertions(+), 11 deletions(-)\n create mode 100644 arch/arm64/include/asm/ras.h\n create mode 100644 arch/arm64/kernel/ras.c" }