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=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no 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 27A43C4332B for ; Tue, 24 Mar 2020 07:31:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EAF4320735 for ; Tue, 24 Mar 2020 07:30:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="dDc720oR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727441AbgCXHa6 (ORCPT ); Tue, 24 Mar 2020 03:30:58 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:41816 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725905AbgCXHa6 (ORCPT ); Tue, 24 Mar 2020 03:30:58 -0400 Received: by mail-pg1-f194.google.com with SMTP id b1so8593299pgm.8 for ; Tue, 24 Mar 2020 00:30:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=R7QvJ+hGlZa7eQ4b0hWGxAvcTaj+cfDyda9vjq1c9co=; b=dDc720oR/Wkj0W/tqqtpU16K1HMP3ZDAfHfGEnuFWPjSx3MSeGKybR8G2Wtje6/nnp tV6BZG6G/B4txOD53a3Dq1v1spwTwl9WtBATsrV3OnL1ypaLPMdRQSr4xzXz61N6/Dkc i7kQy16Px7qhDNrgl+baCuL7LbRMz89MdK5bulJwCnE4r/2SgMrilrOUyXYfmcclHbCI jVNiIVt0CpgAWJ2WVQmACNQRy5xB7o6Cc8nihTm8TdWd7fyxKpjvBwAOWGRAMiHipNY/ CeJJXBTazGvE0o4CXuYOOjjrFhsqYP2RVqqupw4+pdFefLkZ57+Kbwir4QCuSHAqkiZ/ ygeA== 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:mime-version :content-transfer-encoding; bh=R7QvJ+hGlZa7eQ4b0hWGxAvcTaj+cfDyda9vjq1c9co=; b=rZPrnRmMPUum/GvScSXsfwYphOEJa0eDZBZZCLTkedYWVQmvdquahi0XhjHt+9XjHL PJZX2mGrt46YzrNS5p+76Ip6xCJCPnzmSGCL5376UZqb2WURZYKCPHO7Of85WOSWJmyk HhbJPe1fJb/CMPCLjq5AQD+hICyorNfkyRnwdG1zpyNHQ8YLqpbaPqXqxk5ERkCmkAu3 7JifoscUgBNMyMlE8pSmbYDicEzkD6qid0wdmtkhpOz0w8ZgIcTrQFwhZ0bcY6HiKLJC grXn7/oTkDznLNdWIQoKt+MWYR+BnHYMZf2Hfvt9966SqPW6GyJIXM4v+LS32b8FdZf8 lkhQ== X-Gm-Message-State: ANhLgQ0dez6JakJw3PRPhZLYSI/+z0Si1JLHnbkAu4jFI9/XA/rp/IKc /duduslcbf5BxdQHrLETZgBeYOERt3g= X-Google-Smtp-Source: ADFU+vtsxA7BrygqHJNRMPjVwJ4JD9w/qFMcUE5ViYWrI55yKi0mVzytAhxC2mpic4Gm7dj4rZ2baA== X-Received: by 2002:a63:f141:: with SMTP id o1mr24826131pgk.92.1585035057097; Tue, 24 Mar 2020 00:30:57 -0700 (PDT) Received: from hsinchu02.internal.sifive.com (220-132-236-182.HINET-IP.hinet.net. [220.132.236.182]) by smtp.gmail.com with ESMTPSA id i187sm15124648pfg.33.2020.03.24.00.30.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 00:30:56 -0700 (PDT) From: Zong Li To: palmer@dabbelt.com, paul.walmsley@sifive.com, alex@ghiti.fr, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Zong Li Subject: [PATCH RFC 0/8] Support KASLR for RISC-V Date: Tue, 24 Mar 2020 15:30:45 +0800 Message-Id: X-Mailer: git-send-email 2.25.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series implement KASLR for RISC-V. It copies kernel image to a proper and random place, and make all harts go to the new destination. This patch depends on the patch 'riscv: Introduce CONFIG_RELOCATABLE', but given a small change by making PAGE_OFFSET be constant, so all the memory could be available after moving kernel physical address. This patch also depends on 'Support strict kernel memory permissions for security'. Zong Li (8): riscv/kaslr: add interface to get kaslr offset riscv/kaslr: introduce functions to clear page table riscv/kaslr: support KASLR infrastructure riscv/kaslr: randomize the kernel image offset riscv/kaslr: support sparse memory model riscv/kaslr: clear the original kernel image riscv/kaslr: add cmdline support to disable KASLR riscv/kaslr: dump out kernel offset information on panic arch/riscv/Kconfig | 15 ++ arch/riscv/include/asm/kaslr.h | 12 + arch/riscv/include/asm/page.h | 5 + arch/riscv/kernel/Makefile | 2 + arch/riscv/kernel/head.S | 39 +++ arch/riscv/kernel/kaslr.c | 442 +++++++++++++++++++++++++++++++++ arch/riscv/kernel/setup.c | 23 ++ arch/riscv/mm/init.c | 115 ++++++++- 8 files changed, 651 insertions(+), 2 deletions(-) create mode 100644 arch/riscv/include/asm/kaslr.h create mode 100644 arch/riscv/kernel/kaslr.c -- 2.25.1