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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9CC50C433EF for ; Wed, 3 Nov 2021 13:26:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7FEAE60E98 for ; Wed, 3 Nov 2021 13:26:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231982AbhKCN3O (ORCPT ); Wed, 3 Nov 2021 09:29:14 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:15358 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231178AbhKCN3N (ORCPT ); Wed, 3 Nov 2021 09:29:13 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Hknbh5sNwz90mW; Wed, 3 Nov 2021 21:26:24 +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 15.1.2308.15; Wed, 3 Nov 2021 21:26:33 +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 15.1.2308.15; Wed, 3 Nov 2021 21:26:33 +0800 From: Kefeng Wang To: Russell King , , CC: Alexander Potapenko , Marco Elver , Dmitry Vyukov , Kefeng Wang Subject: [PATCH v2 0/3] ARM: Support KFENCE feature Date: Wed, 3 Nov 2021 21:38:42 +0800 Message-ID: <20211103133845.78528-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) 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 This patchset supports Kfence feature, tested the kfence_test on ARM QEMU with or without ARM_LPAE and all passed. 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 -- 2.26.2