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GET /api/patches/811884/?format=api
{ "id": 811884, "url": "http://patchwork.ozlabs.org/api/patches/811884/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1504910713-7094-27-git-send-email-linuxram@us.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": "<1504910713-7094-27-git-send-email-linuxram@us.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/1504910713-7094-27-git-send-email-linuxram@us.ibm.com/", "date": "2017-09-08T22:45:06", "name": "[18/25] powerpc: check key protection for user page access", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "5374a0bd40d957348b7cbc137a7103a98f7c7a24", "submitter": { "id": 2667, "url": "http://patchwork.ozlabs.org/api/people/2667/?format=api", "name": "Ram Pai", "email": "linuxram@us.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1504910713-7094-27-git-send-email-linuxram@us.ibm.com/mbox/", "series": [ { "id": 2303, "url": "http://patchwork.ozlabs.org/api/series/2303/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=2303", "date": "2017-09-08T22:44:40", "name": "powerpc: Free up RPAGE_RSV bits", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/2303/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/811884/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/811884/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 3xptyQ2KSDz9sBW\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSat, 9 Sep 2017 09:37:02 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xptyQ11SmzDrVZ\n\tfor <patchwork-incoming@ozlabs.org>;\n\tSat, 9 Sep 2017 09:37:02 +1000 (AEST)", "from mail-qt0-x243.google.com (mail-qt0-x243.google.com\n\t[IPv6:2607:f8b0:400d:c0d::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 3xpsrz1Nr2zDrd6\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tSat, 9 Sep 2017 08:47:15 +1000 (AEST)", "by mail-qt0-x243.google.com with SMTP id h21so2358391qth.4\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tFri, 08 Sep 2017 15:47:15 -0700 (PDT)", "from localhost.localdomain (50-39-103-96.bvtn.or.frontiernet.net.\n\t[50.39.103.96]) by smtp.gmail.com with ESMTPSA id\n\tx124sm2033726qka.85.2017.09.08.15.47.11\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tFri, 08 Sep 2017 15:47:13 -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=\"m8cvrghI\"; 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=\"m8cvrghI\"; dkim-atps=neutral", "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=gmail.com\n\t(client-ip=2607:f8b0:400d:c0d::243; helo=mail-qt0-x243.google.com;\n\tenvelope-from=ram.n.pai@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=\"m8cvrghI\"; dkim-atps=neutral" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=sender:from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=yNZJPQ2cwn5BQXYY40Nf77WRnTtHQN2hJ7VIC/03yTk=;\n\tb=m8cvrghIRUu3KBsYDB3N35GJ8P+KHWJZBoDVVmY6hzl1s/6R1fQ2oA209Onz8IydpX\n\tIwG0ggIWnw7HdgWyuiu2HDi7PpTvbOz+WsWpQsD1zQMr6PSRpNL3uu7SIY1wkZkF7Lr4\n\tGpmwvzlhRfXYJWyPn/n1WwXOBHfx96MJT+mpDpsaPc+ugkJpUJEdOPOO8E0Ar24RwZjn\n\tAHQzYeQA+GSmkRfVFzQbLiMu9b5+D25c4UFbkXUCZOvhsZ1jKPCcb4M9kS1vK42b9PBS\n\tA+hZle0u0Gb6VFrgV23A6wHOonGVBgD0hPGQpaQUGRShjEW32vmwOIxSkMioA6WLpdre\n\tEE6g==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:sender:from:to:cc:subject:date:message-id\n\t:in-reply-to:references;\n\tbh=yNZJPQ2cwn5BQXYY40Nf77WRnTtHQN2hJ7VIC/03yTk=;\n\tb=IxebW29GmmJdKcC4+Y4m15JVuU4biJQBCeibQZcraQ+04ltda2v0/mwHW5djHYBBtx\n\tpGydwuRN/JUKGiI46NNAXdVwpieSC7RTn/rJHTie/cPifpxWoeCUhTKgmjZPtu2IchYh\n\tRm6wBs8ZtMVzCSshia2bqmYG5mrHLluNJtWLxq+vvcNkHXfws1EzekVF1N6Lu2xhZD50\n\tPnm0fyfU2TlfWlPakGaxX7wLEcGx/GTv3W9Gwp3Vqmfkz4rHmVieguPgTuTFVOztUG8/\n\thNwdh7PPla3F4+jB3MI4JVwpvarmgiq7N2j3YGOu6nKCCPNDutEdkYZyEiMIp/3Tal3T\n\ta6pw==", "X-Gm-Message-State": "AHPjjUiFTZ98rxqglygaz2nfWX6frM6uw81xTEPdi15TmsMSm8cyMFWJ\n\t+aTDaaeOt3NoYQ==", "X-Google-Smtp-Source": "AOwi7QC8CTerpQgE1qU+1DxZ1EcezJgZx8rOq22DUntZWqepLkCkd0qpuDam1wFC0OBbvLXXcSWbSA==", "X-Received": "by 10.237.59.221 with SMTP id s29mr6657665qte.27.1504910833324; \n\tFri, 08 Sep 2017 15:47:13 -0700 (PDT)", "From": "Ram Pai <linuxram@us.ibm.com>", "To": "mpe@ellerman.id.au,\n\tlinuxppc-dev@lists.ozlabs.org", "Subject": "[PATCH 18/25] powerpc: check key protection for user page access", "Date": "Fri, 8 Sep 2017 15:45:06 -0700", "Message-Id": "<1504910713-7094-27-git-send-email-linuxram@us.ibm.com>", "X-Mailer": "git-send-email 1.7.1", "In-Reply-To": "<1504910713-7094-1-git-send-email-linuxram@us.ibm.com>", "References": "<1504910713-7094-1-git-send-email-linuxram@us.ibm.com>", "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": "ebiederm@xmission.com, linuxram@us.ibm.com, mhocko@kernel.org,\n\tpaulus@samba.org, aneesh.kumar@linux.vnet.ibm.com,\n\tbauerman@linux.vnet.ibm.com, khandual@linux.vnet.ibm.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": "Make sure that the kernel does not access user pages without\nchecking their key-protection.\n\nSigned-off-by: Ram Pai <linuxram@us.ibm.com>\n---\n arch/powerpc/include/asm/book3s/64/pgtable.h | 14 ++++++++++++++\n 1 files changed, 14 insertions(+), 0 deletions(-)", "diff": "diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h\nindex bd244b3..d22bb4d 100644\n--- a/arch/powerpc/include/asm/book3s/64/pgtable.h\n+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h\n@@ -494,6 +494,20 @@ static inline void write_uamor(u64 value)\n \n #ifdef CONFIG_PPC64_MEMORY_PROTECTION_KEYS\n extern bool arch_pte_access_permitted(u64 pte, bool write, bool execute);\n+\n+#define pte_access_permitted(pte, write) \\\n+\t(pte_present(pte) && \\\n+\t ((!(write) || pte_write(pte)) && \\\n+\t arch_pte_access_permitted(pte_val(pte), !!write, 0)))\n+\n+/*\n+ * We store key in pmd for huge tlb pages. So need\n+ * to check for key protection.\n+ */\n+#define pmd_access_permitted(pmd, write) \\\n+\t(pmd_present(pmd) && \\\n+\t ((!(write) || pmd_write(pmd)) && \\\n+\t arch_pte_access_permitted(pmd_val(pmd), !!write, 0)))\n #endif /* CONFIG_PPC64_MEMORY_PROTECTION_KEYS */\n \n #define __HAVE_ARCH_PTEP_GET_AND_CLEAR\n", "prefixes": [ "18/25" ] }