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Mon, 21 Apr 2025 14:00:57 -0700 (PDT) Received: from [192.168.86.29] ([83.104.178.215]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4406d5acc5dsm150288735e9.9.2025.04.21.14.00.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Apr 2025 14:00:56 -0700 (PDT) Message-ID: <693a7733-0e03-4236-bdd1-13441b1ca3a5@citrix.com> Date: Mon, 21 Apr 2025 22:00:54 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v14 00/19] x86: Trenchboot secure dynamic launch Linux kernel support To: Dave Hansen , 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, kexec@lists.infradead.org, linux-efi@vger.kernel.org, iommu@lists.linux.dev Cc: dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, ardb@kernel.org, mjg59@srcf.ucam.org, James.Bottomley@hansenpartnership.com, peterhuewe@gmx.de, jarkko@kernel.org, jgg@ziepe.ca, luto@amacapital.net, nivedita@alum.mit.edu, herbert@gondor.apana.org.au, davem@davemloft.net, corbet@lwn.net, ebiederm@xmission.com, dwmw2@infradead.org, baolu.lu@linux.intel.com, kanth.ghatraju@oracle.com, trenchboot-devel@googlegroups.com References: <20250421162712.77452-1-ross.philipson@oracle.com> Content-Language: en-GB From: Andrew Cooper Autocrypt: addr=andrew.cooper3@citrix.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250421_140059_641766_B25EB205 X-CRM114-Status: GOOD ( 12.07 ) 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: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On 21/04/2025 9:52 pm, Dave Hansen wrote: > On 4/21/25 09:26, Ross Philipson wrote: >> The larger focus of the TrenchBoot project (https://github.com/TrenchBoot) is to >> enhance the boot security and integrity in a unified manner. > Hey Folks, > > It isn't immediately apparent what these 5,000 lines of code do which is > new, why they are important to users and who will use them. I've > wondered this from v1 and I was hoping it would have gotten better by > v14, but alas... > > Purely from the amount of interest and review tags and the whole "v14" > thing, it doesn't look like this is very important to anyone. Not to be > to flippant about it, but if nobody else cares, why should I (or the > other x86 maintainers)? The very-tl;dr is: This is an implementation of Intel TXT which isn't a piece of abandonware with unaddressed CVEs (i.e. isn't tboot). AMD and ARM support of equivalent technologies will be coming next. ~Andrew