From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7AB7C43387 for ; Tue, 18 Dec 2018 09:44:17 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ED888214C6 for ; Tue, 18 Dec 2018 09:44:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ED888214C6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43JtQQ67xvzDqSl for ; Tue, 18 Dec 2018 20:44:14 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=aneesh.kumar@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43JtMx3rxVzDqN6 for ; Tue, 18 Dec 2018 20:42:04 +1100 (AEDT) Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wBI9ddVZ118411 for ; Tue, 18 Dec 2018 04:42:01 -0500 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0a-001b2d01.pphosted.com with ESMTP id 2pevdt5ucm-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 18 Dec 2018 04:42:01 -0500 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 18 Dec 2018 09:41:57 -0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wBI9ftsW27132062 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 18 Dec 2018 09:41:56 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DDD506E04C; Tue, 18 Dec 2018 09:41:55 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6A2036E050; Tue, 18 Dec 2018 09:41:52 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.85.88.39]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Tue, 18 Dec 2018 09:41:51 +0000 (GMT) From: "Aneesh Kumar K.V" To: npiggin@gmail.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, akpm@linux-foundation.org, x86@kernel.org Subject: [PATCH V4 0/5] NestMMU pte upgrade workaround for mprotect Date: Tue, 18 Dec 2018 15:11:32 +0530 X-Mailer: git-send-email 2.19.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 18121809-8235-0000-0000-00000E3A49E3 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010242; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000271; SDB=6.01133443; UDB=6.00589233; IPR=6.00913618; MB=3.00024731; MTD=3.00000008; XFM=3.00000015; UTC=2018-12-18 09:41:59 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18121809-8236-0000-0000-000043BF9984 Message-Id: <20181218094137.13732-1-aneesh.kumar@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-12-18_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=378 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1812180086 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" We can upgrade pte access (R -> RW transition) via mprotect. We need to make sure we follow the recommended pte update sequence as outlined in commit bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang") for such updates. This patch series do that. Changes from V3: * Build fix for x86 Changes from V2: * Update commit message for patch 4 * use radix tlb flush routines directly. Changes from V1: * Restrict ths only for R->RW upgrade. We don't need to do this for Autonuma * Restrict this only for radix translation mode. Aneesh Kumar K.V (5): mm: Update ptep_modify_prot_start/commit to take vm_area_struct as arg mm: update ptep_modify_prot_commit to take old pte value as arg arch/powerpc/mm: Nest MMU workaround for mprotect RW upgrade. mm/hugetlb: Add prot_modify_start/commit sequence for hugetlb update arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW upgrade arch/powerpc/include/asm/book3s/64/hugetlb.h | 12 +++++++++ arch/powerpc/include/asm/book3s/64/pgtable.h | 18 +++++++++++++ arch/powerpc/include/asm/book3s/64/radix.h | 4 +++ arch/powerpc/mm/hugetlbpage-hash64.c | 27 ++++++++++++++++++++ arch/powerpc/mm/hugetlbpage-radix.c | 17 ++++++++++++ arch/powerpc/mm/pgtable-book3s64.c | 27 ++++++++++++++++++++ arch/powerpc/mm/pgtable-radix.c | 18 +++++++++++++ arch/s390/include/asm/pgtable.h | 5 ++-- arch/s390/mm/pgtable.c | 8 +++--- arch/x86/include/asm/paravirt.h | 13 +++++----- arch/x86/include/asm/paravirt_types.h | 5 ++-- arch/x86/xen/mmu.h | 4 +-- arch/x86/xen/mmu_pv.c | 8 +++--- fs/proc/task_mmu.c | 8 +++--- include/asm-generic/pgtable.h | 18 ++++++------- include/linux/hugetlb.h | 20 +++++++++++++++ mm/hugetlb.c | 8 +++--- mm/memory.c | 8 +++--- mm/mprotect.c | 6 ++--- 19 files changed, 193 insertions(+), 41 deletions(-) -- 2.19.2