linux-kernel - Re: [PATCH v3 04/19] x86/startup_64: Simplify calculation of initial page table address

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Message-ID: <20240205104041.GNZcC7KctURKeu_3wf@fat_crate.local>
Date: Mon, 5 Feb 2024 11:40:41 +0100
From: Borislav Petkov <bp@...en8.de>
To: Ard Biesheuvel <ardb+git@...gle.com>
Cc: linux-kernel@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>,
	Kevin Loughlin <kevinloughlin@...gle.com>,
	Tom Lendacky <thomas.lendacky@....com>,
	Dionna Glaze <dionnaglaze@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Andy Lutomirski <luto@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Kees Cook <keescook@...omium.org>, Brian Gerst <brgerst@...il.com>,
	linux-arch@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH v3 04/19] x86/startup_64: Simplify calculation of initial
 page table address

On Mon, Jan 29, 2024 at 07:05:07PM +0100, Ard Biesheuvel wrote:
> This is all very straight-forward, but the current code makes a mess of
> this.

That's because of a lot of histerical raisins and us not wanting to
break this. I'm single-stepping through all these changes very carefully
to make sure nothing breaks.

Thx.

-- 
Regards/Gruss,
    Boris.

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