linux-kernel - Re: [PATCH v2 3/3] x86/boot: Implement early memory acceptance for SEV-SNP

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Message-ID: <Z_QA6GwqoxdW6D0e@gmail.com>
Date: Mon, 7 Apr 2025 18:44:24 +0200
From: Ingo Molnar <mingo@...nel.org>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: Dionna Amalie Glaze <dionnaglaze@...gle.com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Ard Biesheuvel <ardb+git@...gle.com>, linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Tom Lendacky <thomas.lendacky@....com>,
	Borislav Petkov <bp@...en8.de>,
	Kevin Loughlin <kevinloughlin@...gle.com>
Subject: Re: [PATCH v2 3/3] x86/boot: Implement early memory acceptance for
 SEV-SNP


* Kirill A. Shutemov <kirill.shutemov@...ux.intel.com> wrote:

> On Fri, Apr 04, 2025 at 08:07:03AM -0700, Dionna Amalie Glaze wrote:
> > If the GHCB is available, we should always prefer it.
> 
> I believe we should consider the cost of code duplication in this
> situation.
> 
> If the non-early version is only used in the kexec path, it will not be
> tested as frequently and could be more easily broken. I think it would be
> acceptable for kexec to be slightly slower if it results in more
> maintainable code.

Absolutely so.

Thanks,

	Ingo