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 20E96C433EF for ; Mon, 29 Nov 2021 14:57:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245292AbhK2PAo (ORCPT ); Mon, 29 Nov 2021 10:00:44 -0500 Received: from szxga02-in.huawei.com ([45.249.212.188]:16321 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235992AbhK2O6k (ORCPT ); Mon, 29 Nov 2021 09:58:40 -0500 Received: from dggpemm500024.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4J2pKk4Sr1z91PK; Mon, 29 Nov 2021 22:54:50 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500024.china.huawei.com (7.185.36.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Mon, 29 Nov 2021 22:55:21 +0800 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_CBC_SHA256) id 15.1.2308.20; Mon, 29 Nov 2021 22:55:21 +0800 Message-ID: <8a4dbf98-1ac0-d48d-98fa-c7392e6a4de1@huawei.com> Date: Mon, 29 Nov 2021 22:55:20 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH Resend v2 0/3] ARM: Support KFENCE feature Content-Language: en-US To: , , CC: , , References: <20211115134848.171098-1-wangkefeng.wang@huawei.com> From: Kefeng Wang In-Reply-To: <20211115134848.171098-1-wangkefeng.wang@huawei.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggeme706-chm.china.huawei.com (10.1.199.102) 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 Hi Russell， Could I send this to ARM patch system if no more comments, what about your opinion, thanks. On 2021/11/15 21:48, Kefeng Wang wrote: > This patchset supports Kfence feature, tested the kfence_test on ARM QEMU > with or without ARM_LPAE and all passed. > > V2 Resend: > - adjust is_write_fault() position in patch2 not patch3, sugguested Alexander > - Add ACKed from Marco > - rebased on v5.16-rc1 > > V2: > - drop patch4 in v1, which is used a new way to skip kfence test > see commit c40c6e593bf9 ("kfence: test: fail fast if disabled at boot") > - fix some issue about NO MMU > - drop useless set_memory_valid() under no mmu > - fix implicit declaration of function ‘is_write_fault’ if no mmu > - make KFENCE depends on !XIP_KERNEL, no tested with xip > > v1: > https://lore.kernel.org/linux-arm-kernel/20210825092116.149975-1-wangkefeng.wang@huawei.com/ > > Kefeng Wang (3): > ARM: mm: Provide set_memory_valid() > ARM: mm: Provide is_write_fault() > ARM: Support KFENCE for ARM > > arch/arm/Kconfig | 1 + > arch/arm/include/asm/kfence.h | 53 +++++++++++++++++++++++++++++++ > arch/arm/include/asm/set_memory.h | 1 + > arch/arm/mm/fault.c | 16 ++++++++-- > arch/arm/mm/pageattr.c | 42 ++++++++++++++++++------ > 5 files changed, 100 insertions(+), 13 deletions(-) > create mode 100644 arch/arm/include/asm/kfence.h >