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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 BFE9AC433E1 for ; Wed, 24 Jun 2020 15:23:35 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 89A5720723 for ; Wed, 24 Jun 2020 15:23:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="P2yG/UM5"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="PFUTEJVQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 89A5720723 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=20z8v9SleD/rfbrcQzPps4ScKPhgEzh61MWlGaTH3No=; b=P2yG/UM5cQBI3CdgA5E8Wl4Dm YVKLU//ekJ36WfFGzvEVyNgvyZeFA0e2sWMuGTPQTAzcShhwRPWb3ThUgoh71mxHmxMO9GFZQKEb8 Xr0J23ugx0ZYHFpWW0y09mtQOs7WRYgAV0Itvd2GvWx+KXvzaXgIyHZr0RBGn8MNuSNJPoGf18NtB OQeFL/x8a+IafzvywJ7yvBRv31WdFarJm6mr8k7jxpPe/gtF4hF56hh/FMNUDB5wJ3bMlT8K8Szb2 7I3OYmGa3O0s3roWs+ruHC0w0rapSZucnw3o2F7AlYceETWQRCOddlNWnBhVzGgjSAPLcDVQOK8K9 djSizypZw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jo7Dc-0004BI-AT; Wed, 24 Jun 2020 15:21:44 +0000 Received: from mail-pj1-x1043.google.com ([2607:f8b0:4864:20::1043]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jo7DO-00044V-JA for linux-arm-kernel@lists.infradead.org; Wed, 24 Jun 2020 15:21:32 +0000 Received: by mail-pj1-x1043.google.com with SMTP id cm23so1286120pjb.5 for ; Wed, 24 Jun 2020 08:21:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=hipZu7svv8YCOGWfV429rAgefIwLANWXqxhaAHNlUDs=; b=PFUTEJVQwh2+4QRR1nFSJ1vpBf1P1htrZ93UyqcsZYbdOmeZSMIhkYQd42QutBKyJs TJmRw7i1dvHgb8fEVkq9MnKeDv9Rz3iq8rIhQJBq5dr5O8JseercMwc1JUo8HpJOhm/L hgo66dKugSbGc/w9UC2Psf+VHkXtb5H5cZmBA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=hipZu7svv8YCOGWfV429rAgefIwLANWXqxhaAHNlUDs=; b=rJ2WP8npYQONRk8e7ocJIcsA2RKXfO3+zstioXRf6uTO1QXe6mzMx/7gVZtoSTyeOj wY7wNCrbajiUN6aag+aAPrAHuGHkaidZ/YzMDYYXUtezmI1pKvVyg7MjGw6jdVdWWGzB Cqcmdlt4Rp5NgQytO4c+ZMyApMVJqtRlccsYa0T8AyszAEs4izntuySbm5geQisO7UyF bdQA3Lhm5+PtVI3K5BNqcQ6tlPKwHsgzHyLN/q032KqEKDBzoDsAPEsZufqLRbJy5e9D +K23QNmWGHZAHzCHl8bVKnaAci62XLxZc2RhB117+DzofqW8YPQwyiwizVKU30ONqsaU HgDg== X-Gm-Message-State: AOAM5319O0alYMVD5rnGxEjIrr79bsK2w/b9D4POP1ZAjLt+nsN7SJnC CZD8rXhC4W6XTlX30L7ey5kW0g== X-Google-Smtp-Source: ABdhPJz6Pb/Uq4DmJN0BF/hWfnaErTToTjkFKWI6VNCSQl12WLTaojfbfbhCZdSTruAF/RMm4+CkOA== X-Received: by 2002:a17:90a:cc09:: with SMTP id b9mr25741536pju.223.1593012088520; Wed, 24 Jun 2020 08:21:28 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id m8sm5504017pjk.20.2020.06.24.08.21.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Jun 2020 08:21:27 -0700 (PDT) Date: Wed, 24 Jun 2020 08:21:26 -0700 From: Kees Cook To: Ard Biesheuvel Subject: Re: [PATCH v3 3/9] efi/libstub: Remove .note.gnu.property Message-ID: <202006240820.A3468F4@keescook> References: <20200624014940.1204448-1-keescook@chromium.org> <20200624014940.1204448-4-keescook@chromium.org> <20200624033142.cinvg6rbg252j46d@google.com> <202006232143.66828CD3@keescook> <20200624104356.GA6134@willie-the-truck> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-arch , linux-efi , Arnd Bergmann , Fangrui Song , Peter Collingbourne , Catalin Marinas , Masahiro Yamada , X86 ML , Nick Desaulniers , Russell King , Linux Kernel Mailing List , clang-built-linux , Arvind Sankar , Ingo Molnar , James Morse , Thomas Gleixner , Borislav Petkov , Will Deacon , Nathan Chancellor , Linux ARM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jun 24, 2020 at 12:46:32PM +0200, Ard Biesheuvel wrote: > I'm not sure if there is a point to having PAC and/or BTI in the EFI > stub, given that it runs under the control of the firmware, with its > memory mappings and PAC configuration etc. Is BTI being ignored when the firmware runs? -- Kees Cook _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel