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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 62A25C77B75 for ; Fri, 12 May 2023 10:48:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc: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=fOsrIWadhPkN1HKVUwAl9xt9ToDwkHVNKpaXU7zIYBg=; b=kxkYnc0ibns/qU jbmmvlbFSZJ3Bu/fvVhyvIFaikWetQe0zOM6JCcuuPLCS+XLHw/rz+jl9/XGkzyCSRPFcWZNcVTJR GBl9TLMjgkmohBGZ/G0qLihj80J4bc8PW/jGaz0oDjsZQsdt8oNz2qeExjBa66sVzKYwhgiYVjMGr 3eShi3KUiXTBykbreVe1hvKLQboabhQms6b8unMiMU64/hW5qfyQSneUUKiBzA7GTy65XCf0a7bd7 SxotoFIk2UZw9EB1ZubhKLQy6tizYb/2xmmZKMFxBzELFbfTvX4FaNxzYJth8xMldszdclxVY9P0v 9qA3Mp1Hfn4OQJA5Zuow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pxQJj-00Bguz-0J; Fri, 12 May 2023 10:48:07 +0000 Received: from cavan.codon.org.uk ([176.126.240.207]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pxQJh-00Bgrt-0O for kexec@lists.infradead.org; Fri, 12 May 2023 10:48:06 +0000 Received: by cavan.codon.org.uk (Postfix, from userid 1000) id 3B95440A6F; Fri, 12 May 2023 11:47:53 +0100 (BST) Date: Fri, 12 May 2023 11:47:53 +0100 From: Matthew Garrett To: Ross Philipson Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, iommu@lists.linux-foundation.org, kexec@lists.infradead.org, linux-efi@vger.kernel.org, dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, ardb@kernel.org, James.Bottomley@hansenpartnership.com, luto@amacapital.net, nivedita@alum.mit.edu, kanth.ghatraju@oracle.com, trenchboot-devel@googlegroups.com Subject: Re: [PATCH v6 02/14] Documentation/x86: Secure Launch kernel documentation Message-ID: <20230512104753.GA14461@srcf.ucam.org> References: <20230504145023.835096-1-ross.philipson@oracle.com> <20230504145023.835096-3-ross.philipson@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230504145023.835096-3-ross.philipson@oracle.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230512_034805_286192_308DDA4C X-CRM114-Status: UNSURE ( 9.13 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Thu, May 04, 2023 at 02:50:11PM +0000, Ross Philipson wrote: > +Secure Launch does not interoperate with KASLR. If possible, the MLE should be > +built with KASLR disabled:: Why does Secure Launch not interoperate with KASLR? Re: IOMMUs > +It is recommended that no other command line options should be set to override > +the defaults above. What happens if they are? Does doing so change the security posture of the system? If so, will the measurements be different in a way that demonstrates the system is in an insecure state? _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAC00C77B7C for ; Fri, 12 May 2023 11:04:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240956AbjELLE2 (ORCPT ); Fri, 12 May 2023 07:04:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240091AbjELLE0 (ORCPT ); Fri, 12 May 2023 07:04:26 -0400 X-Greylist: delayed 252 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Fri, 12 May 2023 04:04:20 PDT Received: from cavan.codon.org.uk (irc.codon.org.uk [IPv6:2a00:1098:84:22e::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EBB995BB7; Fri, 12 May 2023 04:04:19 -0700 (PDT) Received: by cavan.codon.org.uk (Postfix, from userid 1000) id 3B95440A6F; Fri, 12 May 2023 11:47:53 +0100 (BST) Date: Fri, 12 May 2023 11:47:53 +0100 From: Matthew Garrett To: Ross Philipson Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, iommu@lists.linux-foundation.org, kexec@lists.infradead.org, linux-efi@vger.kernel.org, dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, ardb@kernel.org, James.Bottomley@hansenpartnership.com, luto@amacapital.net, nivedita@alum.mit.edu, kanth.ghatraju@oracle.com, trenchboot-devel@googlegroups.com Subject: Re: [PATCH v6 02/14] Documentation/x86: Secure Launch kernel documentation Message-ID: <20230512104753.GA14461@srcf.ucam.org> References: <20230504145023.835096-1-ross.philipson@oracle.com> <20230504145023.835096-3-ross.philipson@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230504145023.835096-3-ross.philipson@oracle.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Thu, May 04, 2023 at 02:50:11PM +0000, Ross Philipson wrote: > +Secure Launch does not interoperate with KASLR. If possible, the MLE should be > +built with KASLR disabled:: Why does Secure Launch not interoperate with KASLR? Re: IOMMUs > +It is recommended that no other command line options should be set to override > +the defaults above. What happens if they are? Does doing so change the security posture of the system? If so, will the measurements be different in a way that demonstrates the system is in an insecure state?