From patchwork Thu Mar 17 14:11:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tong Tiangen X-Patchwork-Id: 12784048 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0290AC433F5 for ; Thu, 17 Mar 2022 13:54:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=XNUxFKGWfAMqwrMDG6WflKq9PgnaYgDd+8WkMMtczhc=; b=3UZ1BCozMqmT8d BvalRYbRqzPSJVJpxHcoAuHcrCAuGYwfuHnuthkEFN1OvWxxGHhlLi0vN7xnbjRGV4k8/2Q9Z1I72 HBggZ0WTKmApel3QWiM6ZaPtD05oUa23MrR8ch+iqTvJ25Tipgmsu8To7fZzZ2fRsO8y5Am2yqa9Y xveg2819o+QyFmvH7afDYEXx4+7pYJ5c1DfhkrzZHYW/yqEyDA5eZENJnOf5YuEGZPEVMWLU/vAFf z+ndse9kgX50UhQPMwWJ+CHwUybE9ikohnyZItN97qc7tt/CnS7zNcdk2gI6Bmxy5JqUNKWjFkM4n isLLBJbeu7KUOCn/baUg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUqZG-00GJQq-LI; Thu, 17 Mar 2022 13:53:31 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUqZC-00GJMt-0u; Thu, 17 Mar 2022 13:53:27 +0000 Received: from kwepemi100001.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KK7l91yBszcb9Y; Thu, 17 Mar 2022 21:48:21 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi100001.china.huawei.com (7.221.188.215) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Thu, 17 Mar 2022 21:53:20 +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; Thu, 17 Mar 2022 21:53:19 +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 , Palmer Dabbelt , Albert Ou CC: , , , , Tong Tiangen Subject: [PATCH -next 0/4]mm: page_table_check: add support on arm64 and riscv Date: Thu, 17 Mar 2022 14:11:59 +0000 Message-ID: <20220317141203.3646253-1-tongtiangen@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220317_065326_301191_E81A09A6 X-CRM114-Status: UNSURE ( 7.34 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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/ 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 | 63 ++++++++++++++++++++++++++++--- arch/riscv/Kconfig | 1 + arch/riscv/include/asm/pgtable.h | 64 +++++++++++++++++++++++++++++--- arch/x86/include/asm/pgtable.h | 29 ++++++++++----- include/linux/pgtable.h | 27 ++++++++++---- mm/page_table_check.c | 25 ++++--------- 7 files changed, 164 insertions(+), 46 deletions(-)