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=-14.6 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 9741EC433E0 for ; Tue, 21 Jul 2020 09:44:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7191720771 for ; Tue, 21 Jul 2020 09:44:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="pKahYClp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728674AbgGUJo6 (ORCPT ); Tue, 21 Jul 2020 05:44:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725984AbgGUJo5 (ORCPT ); Tue, 21 Jul 2020 05:44:57 -0400 Received: from mail-wm1-x343.google.com (mail-wm1-x343.google.com [IPv6:2a00:1450:4864:20::343]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23749C061794 for ; Tue, 21 Jul 2020 02:44:57 -0700 (PDT) Received: by mail-wm1-x343.google.com with SMTP id c80so2171573wme.0 for ; Tue, 21 Jul 2020 02:44:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=oay/q/Jq6u5HCNMFK6qus7veTfF7oH0EkEyRRbWbBuo=; b=pKahYClpT7rbPBcaiNecELPYrFpNr1sOL/KBnAvFlQ/TUhvOxhwaV1ieuOvT9p1us4 7pAMGHA/F5puU5alUBQzKCc28k+Z7+mKr70H2brQsauG36WtQ6blvcQgr3ZF1Dr6dJaS NL9Gt6qiOUhFlbqwCHXnO0ZA2YCc5HCN5QvsQ1TrMrhwSb8hvm+Wwew6xBo0PTh1NWvE zM7e0VS6eULENmw536jEVb8MBPO5pzsXLmYGcyVGyt6wLUAOk9SdqPLtQfySwLojPCT1 RxEs3sxrFuQdRj/H1OeiHeUP39Z3NLk78zuf6JvG/zOh96HuCYNOv3II/OKGccw/SIin tgEg== 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=oay/q/Jq6u5HCNMFK6qus7veTfF7oH0EkEyRRbWbBuo=; b=aPOwbjQpLutJqyKmgi3Bd5/jrao2ySysgrjC9M3R8wE65ExMtDEgKaTPiSmUMChQ0V 1RwoX+r187mjNeZwWj2l2g4Mpvqpe2xx336FZ5ilCNU7AFwQB7zHhCXegDBieBbs0Z5b SQnOFazZA5L9kPi9tPhxhdVXEiwnvLBOVSDEydyW2/FfYy9KKe0fO6iS3JmGY6FKM5pG XKhPB6sI7xwO68EyZAT7SGOK/HVD0uL7kgUX0OVNlCjbkVuxZzB20KgCRsMME7a15aO8 0WEOeu7Gv/MSJXgmamKpqwr3DoGudUqkiMNsa5dhBaBebD6iKSgRdRbAJp8mMLX9kbkB /gzw== X-Gm-Message-State: AOAM533VlS6GUecoSurC66xgX1fmlHMYcAaqtm+42v6W/WL0yk+k0j8o VHQPyR4PEfCgT1duk4485e+dvA== X-Google-Smtp-Source: ABdhPJxngyOwJYmlqV/5VQl0CDeLGpyMwcxXJSKOOd8cTePn/msAa3i6Sezc+NNalflZifuYHyrtpQ== X-Received: by 2002:a7b:c090:: with SMTP id r16mr3007999wmh.143.1595324695605; Tue, 21 Jul 2020 02:44:55 -0700 (PDT) Received: from localhost ([2a01:4b00:8523:2d03:cd93:4ca4:af31:19e5]) by smtp.gmail.com with ESMTPSA id t3sm5442414wre.41.2020.07.21.02.44.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Jul 2020 02:44:54 -0700 (PDT) From: David Brazdil To: Marc Zyngier , Will Deacon , Catalin Marinas , James Morse , Julien Thierry , Suzuki K Poulose Cc: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com, kernel-team@android.com, David Brazdil Subject: [PATCH 0/2] Unify non-VHE ASLR features behind CONFIG_RANDOMIZE_BASE Date: Tue, 21 Jul 2020 10:44:43 +0100 Message-Id: <20200721094445.82184-1-dbrazdil@google.com> X-Mailer: git-send-email 2.27.0 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 There is currently no way to disable nVHE ASLR, e.g. for debugging, so the first patch in this series makes it conditional on RANDOMIZE_BASE, same as KASLR. Note that the 'nokaslr' command line flag has no effect here. Second patch unifies the HARDEN_EL2_VECTORS errate for A57 and A72 behind the same Kconfig for simplicity. Happy to make it just depend on RANDOMIZE_BASE if having an option to keep randomization on but hardenning off is preferred. David Brazdil (2): KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE KVM: arm64: Substitute RANDOMIZE_BASE for HARDEN_EL2_VECTORS arch/arm64/Kconfig | 16 ---------------- arch/arm64/include/asm/mmu.h | 6 ++---- arch/arm64/kernel/cpu_errata.c | 4 ++-- arch/arm64/kvm/Kconfig | 2 +- arch/arm64/kvm/va_layout.c | 2 +- 5 files changed, 6 insertions(+), 24 deletions(-) -- 2.27.0