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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 1588DC1B0F2 for ; Wed, 20 Jun 2018 08:58:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A63A820652 for ; Wed, 20 Jun 2018 08:58:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XV3NvB5C" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A63A820652 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754601AbeFTI6S (ORCPT ); Wed, 20 Jun 2018 04:58:18 -0400 Received: from mail-pl0-f66.google.com ([209.85.160.66]:42671 "EHLO mail-pl0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753386AbeFTI6P (ORCPT ); Wed, 20 Jun 2018 04:58:15 -0400 Received: by mail-pl0-f66.google.com with SMTP id w17-v6so1398725pll.9 for ; Wed, 20 Jun 2018 01:58:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=wElC+6eKHQkuOe8WYHn7P9GC2l4DIa8zoz906BcyAM4=; b=XV3NvB5CaUFlgH/vE0DO03YqwLyrGbQAm78A6iK8/AsCyt4FchQFehJ2rUG4apPbQS 99/TaYQxMtw08ghA1xj7pxKd85UNn74HHV8xmhc57Y54VRrpBspMbutCMXDyoyfoyxNp jKddXiSMAKjQgi7V4ut11mZbXB0CQS8dSdLamEMhzRCHATwgb7GRlfJOATUer819JYWz pDLGMHnRDOIE4ugZkeD8TkcNS3q46KfigVi+GI3fCMhu7I8M1zDdP+Y9i46zbGvQrJie AHyy5BM5XBA2Rtq0NVgyT+nWhi8YHnGXuseHgVattDziZ2JkVpZ1MUVqgnvavSWoEv1A tWnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=wElC+6eKHQkuOe8WYHn7P9GC2l4DIa8zoz906BcyAM4=; b=LLgaa/dwuQwvHKzJtuU82j6CTtSJXp/W4Pk8xXKSATl2KzOo+2MfPfgGvqa7lDTm6K KjXciuzvFkccA2mMrMabVQnrpdozAe39j6jA3zn8A2rJMODtScwktHTygPGF9XajNZ5T afwDzQ0T6SL91ADkmMlY6jovyuRoxf2cKbVLFcY1JUhLunF40ZYUoirLKuVyvxKZl316 nrYufiMJ5wRGBAkmypRhdXQL+G4zVlTmy8AKFgbT68W4VJu4ZJMz7CzxAo22Wqa6myuT H//w4DEN9ZvmKQWuciHjoIa0zLBbOjbAkgdDyfZIjmtPJjpKyHlXLDR2uHG7mzHVnZKW 40EA== X-Gm-Message-State: APt69E1XMYvLjmiAXxQ9pVSOY5bMCr/pp1uO1aYeqB8sCpWg7yNbkG1y 8Z/SVZaaYvSHBOdNALmC3Bs= X-Google-Smtp-Source: ADUXVKLo9IRP0bH3I+2dbkkHumFzYz/NT3gDO9VaYlsvwcsMwBrIG+v+43eqDeAQra1pebXSbCzhmQ== X-Received: by 2002:a17:902:9344:: with SMTP id g4-v6mr22770028plp.10.1529485094909; Wed, 20 Jun 2018 01:58:14 -0700 (PDT) Received: from toy.corp.qihoo.net ([104.192.108.9]) by smtp.gmail.com with ESMTPSA id i65-v6sm5350257pfd.17.2018.06.20.01.58.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 20 Jun 2018 01:58:14 -0700 (PDT) From: Jun Yao To: linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com, will.deacon@arm.com, ard.biesheuvel@linaro.org, james.morse@arm.com, linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com Subject: [PATCH 0/1] Move {idmap_pg_dir,tramp_pg_dir,swapper_pg_dir} Date: Wed, 20 Jun 2018 16:57:54 +0800 Message-Id: <20180620085755.20045-1-yaojun8558363@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch moves {idmap_pg_dir,tramp_pg_dir,swapper_pg_dir} to .rodata section, which makes KSMA more difficult. At the same time, it is more concise than the previous patches[1][2]. As James Morse suggested[2], this patch updates swapper_pg_dir through the fixmap entry. [1] http://www.openwall.com/lists/kernel-hardening/2018/05/31/1 [2] https://patchwork.kernel.org/patch/10449589/ Jun Yao (1): arm64/mm: move {idmap_pg_dir,tramp_pg_dir,swapper_pg_dir} to .rodata section arch/arm64/include/asm/pgalloc.h | 19 +++++++++++++++++++ arch/arm64/kernel/vmlinux.lds.S | 32 ++++++++++++++++++-------------- arch/arm64/mm/mmu.c | 23 +++++++++++++++++++---- 3 files changed, 56 insertions(+), 18 deletions(-) -- 2.17.1