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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, 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 1C3AEC4338F for ; Wed, 25 Aug 2021 09:17:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9C35610CD for ; Wed, 25 Aug 2021 09:17:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239632AbhHYJSK (ORCPT ); Wed, 25 Aug 2021 05:18:10 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:8771 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233272AbhHYJSJ (ORCPT ); Wed, 25 Aug 2021 05:18:09 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4GvgMz2S67zYrNx; Wed, 25 Aug 2021 17:16:47 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 25 Aug 2021 17:17:20 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) 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 15.1.2176.2; Wed, 25 Aug 2021 17:17:20 +0800 From: Kefeng Wang To: Russell King , Alexander Potapenko , Marco Elver , Dmitry Vyukov , , , CC: Andrew Morton , Kefeng Wang Subject: [PATCH 0/4] ARM: Support KFENCE feature Date: Wed, 25 Aug 2021 17:21:12 +0800 Message-ID: <20210825092116.149975-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) 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 The patch 1~3 is to support KFENCE feature on ARM. NOTE: The context of patch2/3 changes in arch/arm/mm/fault.c is based on link[1], which make some refactor and cleanup about page fault. kfence_test is not useful when kfence is not enabled, skip kfence test when kfence not enabled in patch4. I tested the kfence_test on ARM QEMU with or without ARM_LPAE and all passed. [1] https://lore.kernel.org/linux-arm-kernel/20210610123556.171328-1-wangkefeng.wang@huawei.com/ Kefeng Wang (4): ARM: mm: Provide set_memory_valid() ARM: mm: Provide is_write_fault() ARM: Support KFENCE for ARM mm: kfence: Only load kfence_test when kfence is enabled arch/arm/Kconfig | 1 + arch/arm/include/asm/kfence.h | 52 +++++++++++++++++++++++++++++++ arch/arm/include/asm/set_memory.h | 5 +++ arch/arm/mm/fault.c | 16 ++++++++-- arch/arm/mm/pageattr.c | 41 ++++++++++++++++++------ include/linux/kfence.h | 2 ++ mm/kfence/core.c | 8 +++++ mm/kfence/kfence_test.c | 2 ++ 8 files changed, 114 insertions(+), 13 deletions(-) create mode 100644 arch/arm/include/asm/kfence.h -- 2.26.2