linux-kernel - Re: [PATCH v11 7/9] x86/traps: Communicate a LASS violation in #GP message

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Message-ID: <c74cd598-f702-4d27-9fb7-3547a8c87264@intel.com>
Date: Fri, 31 Oct 2025 13:56:30 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Sohil Mehta <sohil.mehta@...el.com>, x86@...nel.org,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>
Cc: Jonathan Corbet <corbet@....net>, "H . Peter Anvin" <hpa@...or.com>,
 Andy Lutomirski <luto@...nel.org>, Josh Poimboeuf <jpoimboe@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>, Ard Biesheuvel <ardb@...nel.org>,
 "Kirill A . Shutemov" <kas@...nel.org>, Xin Li <xin@...or.com>,
 David Woodhouse <dwmw@...zon.co.uk>, Sean Christopherson
 <seanjc@...gle.com>, Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Vegard Nossum <vegard.nossum@...cle.com>,
 Andrew Cooper <andrew.cooper3@...rix.com>,
 Randy Dunlap <rdunlap@...radead.org>,
 Geert Uytterhoeven <geert@...ux-m68k.org>, Kees Cook <kees@...nel.org>,
 Tony Luck <tony.luck@...el.com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-efi@...r.kernel.org
Subject: Re: [PATCH v11 7/9] x86/traps: Communicate a LASS violation in #GP
 message

On 10/31/25 12:59, Sohil Mehta wrote:
> Were you looking for anything specific? I can clean them up and post
> them if required.

It would be nice to have these in-kernel somehow, even if they were
silly debugfs knobs or something. Ira had some tests for PKS that never
went in but you might be able to reuse some of his techniques.