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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0AECEB64DD for ; Thu, 13 Jul 2023 11:46:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234177AbjGMLqu (ORCPT ); Thu, 13 Jul 2023 07:46:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232882AbjGMLqp (ORCPT ); Thu, 13 Jul 2023 07:46:45 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3FDBB4; Thu, 13 Jul 2023 04:46:44 -0700 (PDT) Received: from dggpemm500001.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4R1t8R3SfQzVjcT; Thu, 13 Jul 2023 19:45:27 +0800 (CST) Received: from [10.174.177.243] (10.174.177.243) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Thu, 13 Jul 2023 19:46:40 +0800 Message-ID: <699d421a-b8cf-a338-5736-acc25f671c57@huawei.com> Date: Thu, 13 Jul 2023 19:46:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH rfc -next 00/10] mm: convert to generic VMA lock-based page fault Content-Language: en-US To: , Andrew Morton , CC: Russell King , Catalin Marinas , Will Deacon , Huacai Chen , WANG Xuerui , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , , , , , , , References: <20230713095155.189443-1-wangkefeng.wang@huawei.com> From: Kefeng Wang In-Reply-To: <20230713095155.189443-1-wangkefeng.wang@huawei.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Please ignore this one... On 2023/7/13 17:51, Kefeng Wang wrote: > Add a generic VMA lock-based page fault handler in mm core, and convert > architectures to use it, which eliminate architectures's duplicated codes. > > With it, we can avoid multiple changes in architectures's code if we > add new feature or bugfix. > > This fixes riscv missing change about commit 38b3aec8e8d2 "mm: drop per-VMA > lock when returning VM_FAULT_RETRY or VM_FAULT_COMPLETED", and in the end, > we enable this feature on ARM32/Loongarch too. > > This is based on next-20230713, only built test(no loongarch compiler, > so except loongarch). > > Kefeng Wang (10): > mm: add a generic VMA lock-based page fault handler > x86: mm: use try_vma_locked_page_fault() > arm64: mm: use try_vma_locked_page_fault() > s390: mm: use try_vma_locked_page_fault() > powerpc: mm: use try_vma_locked_page_fault() > riscv: mm: use try_vma_locked_page_fault() > ARM: mm: try VMA lock-based page fault handling first > loongarch: mm: cleanup __do_page_fault() > loongarch: mm: add access_error() helper > loongarch: mm: try VMA lock-based page fault handling first > > arch/arm/Kconfig | 1 + > arch/arm/mm/fault.c | 15 ++++++- > arch/arm64/mm/fault.c | 28 +++--------- > arch/loongarch/Kconfig | 1 + > arch/loongarch/mm/fault.c | 92 ++++++++++++++++++++++++--------------- > arch/powerpc/mm/fault.c | 54 ++++++++++------------- > arch/riscv/mm/fault.c | 38 +++++++--------- > arch/s390/mm/fault.c | 23 +++------- > arch/x86/mm/fault.c | 39 +++++++---------- > include/linux/mm.h | 28 ++++++++++++ > mm/memory.c | 42 ++++++++++++++++++ > 11 files changed, 206 insertions(+), 155 deletions(-) >