linux-kernel - Re: [PATCH v7 22/22] x86/efistub: Avoid legacy decompressor when doing EFI boot

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Message-ID: <20230802102600.GIZMovOIUDAJAXu0F5@fat_crate.local>
Date:   Wed, 2 Aug 2023 12:26:00 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Evgeniy Baskov <baskov@...ras.ru>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Alexey Khoroshilov <khoroshilov@...ras.ru>,
        Peter Jones <pjones@...hat.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Dave Young <dyoung@...hat.com>,
        Mario Limonciello <mario.limonciello@....com>,
        Kees Cook <keescook@...omium.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH v7 22/22] x86/efistub: Avoid legacy decompressor when
 doing EFI boot

On Fri, Jul 28, 2023 at 11:09:16AM +0200, Ard Biesheuvel wrote:
> The bare metal decompressor code was never really intended to run in a
> hosted environment such as the EFI boot services, and does a few things
> that are problematic in the context of EFI boot now that the logo
> requirements are getting tighter.

Please spend a sentence or two explaining those. After some time has
passed, no one will remember what that tightening of the requirements
was.

So yeah, other than those minor nitpicks, I like the thing, all in all.

Pls send v8 so that I can run it here on my machines. A git branch would
be cool too.

As to merging this, I presume you want it to go through tip?

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette