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 B475BC433EF for ; Mon, 28 Mar 2022 01:34:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236509AbiC1Bfk (ORCPT ); Sun, 27 Mar 2022 21:35:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229867AbiC1Bfj (ORCPT ); Sun, 27 Mar 2022 21:35:39 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2850220D1 for ; Sun, 27 Mar 2022 18:33:59 -0700 (PDT) Received: from kwepemi500021.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KRZwQ1lDZzcZyg; Mon, 28 Mar 2022 09:33:42 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi500021.china.huawei.com (7.221.188.245) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 28 Mar 2022 09:33:56 +0800 Received: from localhost.localdomain (10.175.112.125) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 28 Mar 2022 09:33:55 +0800 From: Tong Tiangen To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , , "H. Peter Anvin" , Pasha Tatashin , Andrew Morton , Catalin Marinas , Will Deacon , Paul Walmsley , Palmer Dabbelt , Albert Ou CC: , , , , Tong Tiangen Subject: [PATCH -next v3 0/4]mm: page_table_check: add support on arm64 and riscv Date: Mon, 28 Mar 2022 01:52:38 +0000 Message-ID: <20220328015242.1136836-1-tongtiangen@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Page table check performs extra verifications at the time when new pages become accessible from the userspace by getting their page table entries (PTEs PMDs etc.) added into the table. It is supported on X86[1]. This patchset made some simple changes and make it easier to support new architecture, then we support this feature on ARM64 and RISCV. [1]https://lore.kernel.org/lkml/20211123214814.3756047-1-pasha.tatashin@soleen.com/ v2 -> v3: 2. Modify ptep_clear() in include/linux/pgtable.h, using IS_ENABLED according to the suggestions of Pasha. v1 -> v2: 1. Fix arm64's pte/pmd/pud_user_accessible_page() according to the suggestions of Catalin. 2. Also fix riscv's pte_pmd_pud_user_accessible_page(). Kefeng Wang (2): mm: page_table_check: move pxx_user_accessible_page into x86 arm64: mm: add support for page table check Tong Tiangen (2): mm: page_table_check: add hooks to public helpers riscv: mm: add support for page table check arch/arm64/Kconfig | 1 + arch/arm64/include/asm/pgtable.h | 65 ++++++++++++++++++++++++--- arch/riscv/Kconfig | 1 + arch/riscv/include/asm/pgtable.h | 77 +++++++++++++++++++++++++++++--- arch/x86/include/asm/pgtable.h | 29 +++++++----- include/linux/pgtable.h | 26 +++++++---- mm/page_table_check.c | 25 ++++------- 7 files changed, 178 insertions(+), 46 deletions(-) -- 2.18.0.huawei.25