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GET /api/patches/773446/?format=api
{ "id": 773446, "url": "http://patchwork.ozlabs.org/api/patches/773446/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20170608191655.19469-1-naveen.n.rao@linux.vnet.ibm.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": "<20170608191655.19469-1-naveen.n.rao@linux.vnet.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20170608191655.19469-1-naveen.n.rao@linux.vnet.ibm.com/", "date": "2017-06-08T19:16:55", "name": "powerpc/kprobes: Don't save/restore DAR/DSISR to/from pt_regs for optprobes", "commit_ref": "ec4189c4e8eea0c5e7c9b71cb1502cdcbb32aa17", "pull_url": null, "state": "accepted", "archived": false, "hash": "37fe7edce035dde74014375dc14ae8999eef5343", "submitter": { "id": 15185, "url": "http://patchwork.ozlabs.org/api/people/15185/?format=api", "name": "Naveen N. Rao", "email": "naveen.n.rao@linux.vnet.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20170608191655.19469-1-naveen.n.rao@linux.vnet.ibm.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/773446/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/773446/checks/", "tags": {}, "related": [], "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 3wkFZT21brz9s0m\n\tfor <patchwork-incoming@ozlabs.org>;\n\tFri, 9 Jun 2017 05:18:25 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3wkFZT1CMPzDqS0\n\tfor <patchwork-incoming@ozlabs.org>;\n\tFri, 9 Jun 2017 05:18:25 +1000 (AEST)", "from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com\n\t[148.163.156.1])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3wkFYC3J62zDqNp\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tFri, 9 Jun 2017 05:17:19 +1000 (AEST)", "from pps.filterd (m0098396.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id\n\tv58JE4pu094267\n\tfor <linuxppc-dev@lists.ozlabs.org>; Thu, 8 Jun 2017 15:17:16 -0400", "from e23smtp07.au.ibm.com (e23smtp07.au.ibm.com [202.81.31.140])\n\tby mx0a-001b2d01.pphosted.com with ESMTP id 2ay49hfx65-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor <linuxppc-dev@lists.ozlabs.org>; Thu, 08 Jun 2017 15:17:16 -0400", "from localhost\n\tby e23smtp07.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! Violators will be prosecuted\n\tfor <linuxppc-dev@lists.ozlabs.org> from\n\t<naveen.n.rao@linux.vnet.ibm.com>; Fri, 9 Jun 2017 05:17:14 +1000", "from d23relay06.au.ibm.com (202.81.31.225)\n\tby e23smtp07.au.ibm.com (202.81.31.204) with IBM ESMTP SMTP Gateway:\n\tAuthorized Use Only! Violators will be prosecuted; \n\tFri, 9 Jun 2017 05:17:12 +1000", "from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97])\n\tby d23relay06.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n\tv58JHB3858130464\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 9 Jun 2017 05:17:11 +1000", "from d23av03.au.ibm.com (localhost [127.0.0.1])\n\tby d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id\n\tv58JH3A6020922\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 9 Jun 2017 05:17:03 +1000", "from naverao1-tp.ibm.com ([9.79.215.140])\n\tby d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id\n\tv58JH0mE020779; Fri, 9 Jun 2017 05:17:01 +1000" ], "From": "\"Naveen N. Rao\" <naveen.n.rao@linux.vnet.ibm.com>", "To": "Michael Ellerman <mpe@ellerman.id.au>", "Subject": "[PATCH] powerpc/kprobes: Don't save/restore DAR/DSISR to/from\n\tpt_regs for optprobes", "Date": "Fri, 9 Jun 2017 00:46:55 +0530", "X-Mailer": "git-send-email 2.12.2", "X-TM-AS-MML": "disable", "x-cbid": "17060819-0044-0000-0000-00000269AAA0", "X-IBM-AV-DETECTION": "SAVI=unused REMOTE=unused XFE=unused", "x-cbparentid": "17060819-0045-0000-0000-000006F8B6B3", "Message-Id": "<20170608191655.19469-1-naveen.n.rao@linux.vnet.ibm.com>", "X-Proofpoint-Virus-Version": "vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-06-08_07:, , signatures=0", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=0\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000\n\tdefinitions=main-1706080336", "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": "linuxppc-dev@lists.ozlabs.org, Masami Hiramatsu <mhiramat@kernel.org>", "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": "We don't save/restore these across a trap, or with KPROBES_ON_FTRACE.\n\nSigned-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>\n---\n arch/powerpc/kernel/optprobes_head.S | 8 --------\n 1 file changed, 8 deletions(-)", "diff": "diff --git a/arch/powerpc/kernel/optprobes_head.S b/arch/powerpc/kernel/optprobes_head.S\nindex 4937bef7652f..52fc864cdec4 100644\n--- a/arch/powerpc/kernel/optprobes_head.S\n+++ b/arch/powerpc/kernel/optprobes_head.S\n@@ -60,10 +60,6 @@ optprobe_template_entry:\n \tstd\tr5,_CCR(r1)\n \tlbz r5,PACASOFTIRQEN(r13)\n \tstd r5,SOFTE(r1)\n-\tmfdar\tr5\n-\tstd\tr5,_DAR(r1)\n-\tmfdsisr\tr5\n-\tstd\tr5,_DSISR(r1)\n \n \t/*\n \t * We may get here from a module, so load the kernel TOC in r2.\n@@ -122,10 +118,6 @@ optprobe_template_call_emulate:\n \tmtxer\tr5\n \tld\tr5,_CCR(r1)\n \tmtcr\tr5\n-\tld\tr5,_DAR(r1)\n-\tmtdar\tr5\n-\tld\tr5,_DSISR(r1)\n-\tmtdsisr\tr5\n \tREST_GPR(0,r1)\n \tREST_10GPRS(2,r1)\n \tREST_10GPRS(12,r1)\n", "prefixes": [] }