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{ "id": 812681, "url": "http://patchwork.ozlabs.org/api/covers/812681/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20170912043859.32473-1-bsingharora@gmail.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20170912043859.32473-1-bsingharora@gmail.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20170912043859.32473-1-bsingharora@gmail.com/", "date": "2017-09-12T04:38:55", "name": "[v1,0/4] Revisit MCE handling for UE Errors", "submitter": { "id": 9347, "url": "http://patchwork.ozlabs.org/api/people/9347/?format=api", "name": "Balbir Singh", "email": "bsingharora@gmail.com" }, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/cover/20170912043859.32473-1-bsingharora@gmail.com/mbox/", "series": [ { "id": 2612, "url": "http://patchwork.ozlabs.org/api/series/2612/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=2612", "date": "2017-09-12T04:38:55", "name": "Revisit MCE handling for UE Errors", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/2612/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/812681/comments/", "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xrsYk1J9nz9s5L\n\tfor <patchwork-incoming@ozlabs.org>;\n\tTue, 12 Sep 2017 14:40:58 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xrsYk07FzzDrKs\n\tfor <patchwork-incoming@ozlabs.org>;\n\tTue, 12 Sep 2017 14:40:58 +1000 (AEST)", "from mail-pf0-x243.google.com (mail-pf0-x243.google.com\n\t[IPv6:2607:f8b0:400e:c00::243])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xrsWl0BYPzDrFM\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tTue, 12 Sep 2017 14:39:14 +1000 (AEST)", "by mail-pf0-x243.google.com with SMTP id f84so5793683pfj.3\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tMon, 11 Sep 2017 21:39:14 -0700 (PDT)", "from firefly.ozlabs.ibm.com ([122.99.82.10])\n\tby smtp.gmail.com with ESMTPSA id\n\tc62sm1165226pfl.84.2017.09.11.21.39.09\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tMon, 11 Sep 2017 21:39:11 -0700 (PDT)" ], "Authentication-Results": [ "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"Y/9sWtjL\"; dkim-atps=neutral", "lists.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"Y/9sWtjL\"; dkim-atps=neutral", "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=gmail.com\n\t(client-ip=2607:f8b0:400e:c00::243; helo=mail-pf0-x243.google.com;\n\tenvelope-from=bsingharora@gmail.com; receiver=<UNKNOWN>)", "lists.ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"Y/9sWtjL\"; dkim-atps=neutral" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=from:to:cc:subject:date:message-id;\n\tbh=LAijE37K7uK2+8He5y9dgnh3d6kdbBTXasbVWjmZGaw=;\n\tb=Y/9sWtjLkS1HxHUBraf46sa4Y8ak/yi3SfSDOy60yixP6Mw/2+IOX9ZdaqJrO9P4f8\n\tFwfiq7EB2dBzmqTZll/mt6S66pdZe492ARc/0FY0udzH7/dcBiXHV+B7akYXLP7GCx44\n\t3WpafIRVRu/R8DQCz4Mh4h/DCM1BTqBhDaMnRnDM66Ww8iiML2fc7aToJbB/qpR0/1o+\n\teTUAsUXvfIM752AMfBOkvl+ce066bG/WWvW758+eSLplS5l+PePjFbyIiQIsr+Xe2jLv\n\tLx0dcMy6ysMc0FyC9qHJ2Lkv6zkD3XFlY8Od7hW07cBz6fr6GGsiQQ5Sd0xJE2fxjrQo\n\t6Utg==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id;\n\tbh=LAijE37K7uK2+8He5y9dgnh3d6kdbBTXasbVWjmZGaw=;\n\tb=meNTGzLyUfl9+RFaAblFGMZ2tiicrTVStR72454wgXXQeDSpDNVi4BCb2sQznltgoB\n\t080zAyQxTSXz/rI6BK7UjmgEUpkCLaJbFUxe1UT6F/QFCApKj2JBLiAV4F8IrkJSkEL/\n\tCG2pU9/R3VzNp94uw8mMp5wdFeBPoONYb4hiDr/QPb3sqWJEfUbW3n6VyWlls75plOxm\n\tSINa9oRsHZjPGdvsUpjbiOWy7ewQDbUY+YlEWHj544jxABe4/FMWnXV0/MtcHpVuRrAv\n\tQY2axeueaE9HsyaBl2yqnzdaIb1hviOIRSiubIv3VbnI5TVlgLC0l2pqQRc4Ng0TIeTm\n\tv6nQ==", "X-Gm-Message-State": "AHPjjUizogcli9sjS7R7CVQy4Su1NuE6An3VmzszbnSLZdKsnD4Y3WOr\n\t/1INLk7zNvyWTw2U", "X-Google-Smtp-Source": "ADKCNb4MkFvfgVYCEhg1G916cVQc6xJe5r+HZdpU6k9Ykaiv+hzF0Siw47oTjNWdnvT3dmUidnOvig==", "X-Received": "by 10.84.232.8 with SMTP id h8mr16007251plk.423.1505191152815;\n\tMon, 11 Sep 2017 21:39:12 -0700 (PDT)", "From": "Balbir Singh <bsingharora@gmail.com>", "To": "mpe@ellerman.id.au", "Subject": "[PATCH v1 0/4] Revisit MCE handling for UE Errors", "Date": "Tue, 12 Sep 2017 14:38:55 +1000", "Message-Id": "<20170912043859.32473-1-bsingharora@gmail.com>", "X-Mailer": "git-send-email 2.9.5", "X-BeenThere": "linuxppc-dev@lists.ozlabs.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List\n\t<linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Cc": "mahesh@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,\n\tnpiggin@gmail.com", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org", "Sender": "\"Linuxppc-dev\"\n\t<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "content": "This patch series is designed to hook up memory_failure on\nUE errors, this is specially helpful for user_mode UE errors.\n\nThe first patch is a cleanup patch, it removes dead code.\nI could not find any users of get_mce_fault_addr().\nThe second patch walks kernel/user mode page tables in\nreal mode to extract the effective address of the instruction\nthat caused the UE error and the effective address it was\ntrying to access (for load/store). The third patch hooks\nup the pfn for instruction UE errors (ierror).\n\nThe fourth patch hooks up memory_failure to the MCE patch.\n\nTODO:\nLog the address in NVRAM, so that we can recover from\nbad pages at boot and keep the blacklist persistent.\n\nChangelog v2:\n\t- address review comments from Nick and Mahesh\n\t(initialization of pfn and more comments on failure\n\twhen addr_to_pfn() or anaylse_instr() fail)\n\t- Hookup ierrors to the framework as well\n\t(comments from Mahesh)\n\nBalbir Singh (4):\n powerpc/mce.c: Remove unused function get_mce_fault_addr()\n powerpc/mce: Hookup derror (load/store) UE errors\n powerpc/mce: Hookup ierror (instruction) UE errors\n powerpc/mce: hookup memory_failure for UE errors\n\n arch/powerpc/include/asm/mce.h | 4 +-\n arch/powerpc/kernel/mce.c | 108 ++++++++++++++++++++++++----------------\n arch/powerpc/kernel/mce_power.c | 105 +++++++++++++++++++++++++++++++++++---\n 3 files changed, 163 insertions(+), 54 deletions(-)" }