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[2620:137:e000::1:20]) by mx.google.com with ESMTP id kk10-20020a17090b4a0a00b002528f697d12si720349pjb.160.2023.05.15.18.54.55; Mon, 15 May 2023 18:55:07 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-crypto-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229734AbjEPBnQ (ORCPT + 99 others); Mon, 15 May 2023 21:43:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229497AbjEPBnP (ORCPT ); Mon, 15 May 2023 21:43:15 -0400 Received: from cavan.codon.org.uk (irc.codon.org.uk [IPv6:2a00:1098:84:22e::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 123BD5B9B; Mon, 15 May 2023 18:43:12 -0700 (PDT) Received: by cavan.codon.org.uk (Postfix, from userid 1000) id 801BD42529; Tue, 16 May 2023 02:43:10 +0100 (BST) Date: Tue, 16 May 2023 02:43:10 +0100 From: Matthew Garrett To: "Daniel P. Smith" Cc: Ross Philipson , 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, 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 04/14] x86: Secure Launch Resource Table header file Message-ID: <20230516014310.GA5403@srcf.ucam.org> References: <20230504145023.835096-1-ross.philipson@oracle.com> <20230504145023.835096-5-ross.philipson@oracle.com> <20230512105554.GB14461@srcf.ucam.org> <30d5891d-4747-8d67-2667-ff07628740bd@apertussolutions.com> <20230515212206.GA2162@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Spam-Status: No, score=-0.8 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,KHOP_HELO_FCRDNS,SPF_HELO_NEUTRAL, SPF_NEUTRAL,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Mon, May 15, 2023 at 08:41:00PM -0400, Daniel P. Smith wrote: > On 5/15/23 17:22, Matthew Garrett wrote: > > What if I don't use grub, but use something that behaves equivalently? > > Which value should be used here? > > Generally we would request that the bootloader submit a request to register > for a value to be reserved in the spec. That aside, the intent here is to > allow for the possibility for the DLE handler to be independent from the > bootloader, but this does not have to be this way. If a non-open entity > decides to produce their own implementation, they can freely use a > unallocated value at their own risk that it could be allocated to another > bootloader in the future. Though in this scenario it likely would not matter > as the non-open DLE handler would only be present when the non-open > bootloader was present. Is the expectation that the DLE will always be shipped with the bootloader? I think I'm not entirely clear on what's consuming this and why.