From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt1-f198.google.com (mail-qt1-f198.google.com [209.85.160.198]) by kanga.kvack.org (Postfix) with ESMTP id 860D38E0002 for ; Wed, 16 Jan 2019 03:51:05 -0500 (EST) Received: by mail-qt1-f198.google.com with SMTP id m37so5019519qte.10 for ; Wed, 16 Jan 2019 00:51:05 -0800 (PST) Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com. [148.163.158.5]) by mx.google.com with ESMTPS id a13si5824844qtp.35.2019.01.16.00.51.04 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 16 Jan 2019 00:51:04 -0800 (PST) Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id x0G8n5GJ126749 for ; Wed, 16 Jan 2019 03:51:03 -0500 Received: from e13.ny.us.ibm.com (e13.ny.us.ibm.com [129.33.205.203]) by mx0b-001b2d01.pphosted.com with ESMTP id 2q1xfcrabe-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 16 Jan 2019 03:51:03 -0500 Received: from localhost by e13.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 16 Jan 2019 08:51:03 -0000 From: "Aneesh Kumar K.V" Subject: [PATCH V5 0/5] NestMMU pte upgrade workaround for mprotect Date: Wed, 16 Jan 2019 14:20:30 +0530 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: <20190116085035.29729-1-aneesh.kumar@linux.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: npiggin@gmail.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, akpm@linux-foundation.org, x86@kernel.org Cc: linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, "Aneesh Kumar K.V" 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 V4: * Drop EXPORT_SYMBOL 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 | 25 ++++++++++++++++++++ arch/powerpc/mm/hugetlbpage-radix.c | 17 +++++++++++++ arch/powerpc/mm/pgtable-book3s64.c | 25 ++++++++++++++++++++ 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, 189 insertions(+), 41 deletions(-) -- 2.20.1