From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (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 42JdZM1N4JzF13T for ; Mon, 24 Sep 2018 19:04:58 +1000 (AEST) Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w8O91SOR075584 for ; Mon, 24 Sep 2018 05:04:56 -0400 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 2mpumg37sh-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 24 Sep 2018 05:04:56 -0400 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 24 Sep 2018 03:04:55 -0600 From: "Aneesh Kumar K.V" To: npiggin@gmail.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" Subject: [RFC PATCH 0/5] NestMMU pte upgrade workaround for mprotect and autonuma Date: Mon, 24 Sep 2018 14:34:13 +0530 Message-Id: <20180924090418.31282-1-aneesh.kumar@linux.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , We can upgrade pte access (R -> RW transition) via mprotect or autonuma. 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. -aneesh 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/autonuma 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 | 8 +++++ arch/powerpc/include/asm/book3s/64/pgtable.h | 18 ++++++++++ arch/powerpc/include/asm/hugetlb.h | 2 +- arch/powerpc/mm/hugetlbpage.c | 35 ++++++++++++++++++++ arch/powerpc/mm/pgtable-book3s64.c | 34 +++++++++++++++++++ arch/s390/include/asm/pgtable.h | 5 +-- arch/s390/mm/pgtable.c | 8 +++-- arch/x86/include/asm/paravirt.h | 9 +++-- fs/proc/task_mmu.c | 8 +++-- include/asm-generic/pgtable.h | 10 +++--- include/linux/hugetlb.h | 18 ++++++++++ mm/hugetlb.c | 8 +++-- mm/memory.c | 8 ++--- mm/mprotect.c | 6 ++-- 14 files changed, 150 insertions(+), 27 deletions(-) -- 2.17.1