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=-2.6 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, 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 D1242ECDFAA for ; Wed, 18 Jul 2018 10:17:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 892BF2084E for ; Wed, 18 Jul 2018 10:17:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TnOQriTu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 892BF2084E 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 S1730770AbeGRKzI (ORCPT ); Wed, 18 Jul 2018 06:55:08 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:43278 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726142AbeGRKzI (ORCPT ); Wed, 18 Jul 2018 06:55:08 -0400 Received: by mail-pg1-f194.google.com with SMTP id v13-v6so1793088pgr.10 for ; Wed, 18 Jul 2018 03:17:56 -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=5cy94I7Jhsyyb71nQTgp6UGHYIPLAl52HuyX7InuEcI=; b=TnOQriTuvH41y6y//7CFqqxk2q4Z5eYY9UTRBoOeY0ySOiaYoZm1GPNQrR5iqiYTLi NZvP8B8QkaEWiX0cZ1OiHuA/0bL5P6T7wx/GPI6HeVN9cQSY7tnrWNW9uX8zvPoi4Z6b NBXQKmAQ4l8bBzgg/pgy9Ynj1dOxiM4MfR2Gw7rQ7Yz/j4j8ixgW9GALvSg+NA4LjFMF zoX4q6fb3w3Z6egQnuCSYwo3SbiODGWNKfP2yoHiTIGu6vSO+EDzOMi1eHFmZFbK/kpH eeSHQaMSwZSjTZ7pENj02VG+FR5Lhsz3C47dVOe4rxw0BgpY0jRPDb26iTBT/cKQ0Gw4 r5Xw== 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=5cy94I7Jhsyyb71nQTgp6UGHYIPLAl52HuyX7InuEcI=; b=Lnq4qA3cWJ0l8PW7vfgpUE/C0Kn8tcS+WYW8uI3ur4RKyL0PlOCtXGlU74wplu+kNk cmBCzV3y8T0wZWuA9ay9663TMsIOEyxnHzsNleW4hnKVtA+IexozrKhbfqi4mHSLlRje 4wak3bKtQOcPJhvyuRnIV993Ri+d7JOQDiAPgvwi12xRYoNucNrOCxWBxH0FOTGBgAHJ 1kYxZEat6qPAO0eJjtJaidJKkIbiAx4uz0mAULOYAXj816hD59Jqoif8YFvOYCgnCKHV 5GCgEvddpqTvgNBu2stwbuK6Z8cmiia9NwBVkvNkL70PNpP6x4IuLQxHrEImEX9UObZ4 sg3w== X-Gm-Message-State: AOUpUlEOStZUNFxBGq+PfNxvbYbeJagivdUvMr1qsWqT1xL6e1hJhzMC cFPCeNTcsiUa+kzbIjp4QHM= X-Google-Smtp-Source: AAOMgpezVg41SI61HqOMQb1slV7MMD3X34/Pm1J0PyH5cQb70d0WwltdW4XWSm6KqxjjBuPbvioG5w== X-Received: by 2002:a63:2404:: with SMTP id k4-v6mr5132895pgk.191.1531909076468; Wed, 18 Jul 2018 03:17:56 -0700 (PDT) Received: from toy.corp.qihoo.net ([104.192.108.10]) by smtp.gmail.com with ESMTPSA id x2-v6sm6899518pgq.33.2018.07.18.03.17.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Jul 2018 03:17:55 -0700 (PDT) From: Jun Yao To: linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com, will.deacon@arm.com, james.morse@arm.com, linux-kernel@vger.kernel.org Subject: [RESEND PATCH v4 0/6] arm64/mm: Move Date: Wed, 18 Jul 2018 18:17:21 +0800 Message-Id: <20180718101727.10787-1-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 Version 4 changes: 1. Rename INIT_DIR to INIT_PG_TABLES and move it outside the '.init.data' section[1]. 2. Move the 'count' calculation to clear_pages()[1]. 3. Rearrange register in __enable_mmu() and pass ttbr1 through the x1 register[2]. 4. Add commit message to explain why we can make swapper_pg_dir smaller[3]. 5. Rewrite in_swapper_pgdir() and use pgd_set_fixmap() to populate swapper_pg_dir. At the same time, add a spin lock to avoid race conditions[4]. 6. Move {idmap_pg_dir,tramp_pg_dir,reserved_ttbr0,swapper_pg_dir} to the KERNEL_PG_TABLES macro. And put this macro after NOTES[4]. 7. Update init_mm.pgd before kasan_early_init() and kaslr_early_init(), which makes pgd_offset_k() work properly. Test following configs with CONFIG_RANDOMIZE_BASE/UNMAP_KERNEL_AT_EL0/ CONFIG_ARM64_SW_TTBR0_PAN enabled on qemu: 1. CONFIG_ARM64_4K_PAGES/CONFIG_ARM64_VA_BITS_48 2. CONFIG_ARM64_4K_PAGES/CONFIG_ARM64_VA_BITS_39 3. CONFIG_ARM64_64K_PAGES/CONFIG_ARM64_VA_BITS_48 4. CONFIG_ARM64_64K_PAGES/CONFIG_ARM64_VA_BITS_42 v3: https://www.spinics.net/lists/arm-kernel/msg662537.html v2: https://patchwork.kernel.org/patch/10485641/ v1: https://patchwork.kernel.org/patch/10476595/ [1] https://lkml.org/lkml/2018/7/6/238 [2] https://lkml.org/lkml/2018/7/6/239 [3] https://lkml.org/lkml/2018/7/6/243 [4] https://lkml.org/lkml/2018/7/11/782 Jun Yao (6): arm64/mm: Introduce init_pg_dir arm64/mm: Make __enable_mmu() take the ttbr1 page as an argument arm64/mm: Create initial page tables in init_pg_dir arm64/mm: Make swapper_pg_dir smaller arm64/mm: Populate swapper_pg_dir by fixmap arm64/mm: Move {idmap_pg_dir, swapper_pg_dir} to .rodata section arch/arm64/include/asm/assembler.h | 29 +++++++++++++ arch/arm64/include/asm/pgtable.h | 66 ++++++++++++++++++++++++++---- arch/arm64/kernel/head.S | 48 ++++++++++++++-------- arch/arm64/kernel/sleep.S | 1 + arch/arm64/kernel/vmlinux.lds.S | 47 ++++++++++++++------- arch/arm64/mm/mmu.c | 35 ++++------------ 6 files changed, 159 insertions(+), 67 deletions(-) -- 2.17.1