linux-kernel - Re: [PATCH v14 00/19] x86: Trenchboot secure dynamic launch Linux kernel support

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Message-ID: <693a7733-0e03-4236-bdd1-13441b1ca3a5@citrix.com>
Date: Mon, 21 Apr 2025 22:00:54 +0100
From: Andrew Cooper <andrew.cooper3@...rix.com>
To: Dave Hansen <dave.hansen@...el.com>,
 Ross Philipson <ross.philipson@...cle.com>, linux-kernel@...r.kernel.org,
 x86@...nel.org, linux-integrity@...r.kernel.org, linux-doc@...r.kernel.org,
 linux-crypto@...r.kernel.org, kexec@...ts.infradead.org,
 linux-efi@...r.kernel.org, iommu@...ts.linux.dev
Cc: dpsmith@...rtussolutions.com, tglx@...utronix.de, mingo@...hat.com,
 bp@...en8.de, hpa@...or.com, dave.hansen@...ux.intel.com, ardb@...nel.org,
 mjg59@...f.ucam.org, James.Bottomley@...senpartnership.com,
 peterhuewe@....de, jarkko@...nel.org, jgg@...pe.ca, luto@...capital.net,
 nivedita@...m.mit.edu, herbert@...dor.apana.org.au, davem@...emloft.net,
 corbet@....net, ebiederm@...ssion.com, dwmw2@...radead.org,
 baolu.lu@...ux.intel.com, kanth.ghatraju@...cle.com,
 trenchboot-devel@...glegroups.com
Subject: Re: [PATCH v14 00/19] x86: Trenchboot secure dynamic launch Linux
 kernel support

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