linux-kernel - Re: [PATCH v4 08/11] x86/sev: Split off startup code from core code

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Message-ID: <Z_pbLAw56NIFo7yK@gmail.com>
Date: Sat, 12 Apr 2025 14:23:08 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Ard Biesheuvel <ardb+git@...gle.com>
Cc: linux-efi@...r.kernel.org, x86@...nel.org, linux-kernel@...r.kernel.org,
	Ard Biesheuvel <ardb@...nel.org>,
	Tom Lendacky <thomas.lendacky@....com>,
	Dionna Amalie Glaze <dionnaglaze@...gle.com>,
	Kevin Loughlin <kevinloughlin@...gle.com>
Subject: Re: [PATCH v4 08/11] x86/sev: Split off startup code from core code


* Ard Biesheuvel <ardb+git@...gle.com> wrote:

> From: Ard Biesheuvel <ardb@...nel.org>
> 
> Disentangle the SEV core code and the SEV code that is called during
> early boot. The latter piece will be moved into startup/ in a subsequent
> patch.
> 
> Signed-off-by: Ard Biesheuvel <ardb@...nel.org>
> ---
>  arch/x86/boot/compressed/sev.c |    2 +
>  arch/x86/coco/sev/Makefile     |   12 +-
>  arch/x86/coco/sev/core.c       | 1574 ++++----------------
>  arch/x86/coco/sev/shared.c     |  281 ----
>  arch/x86/coco/sev/startup.c    | 1395 +++++++++++++++++
>  5 files changed, 1658 insertions(+), 1606 deletions(-)

x86-64 allmodconfig build failure:

arch/x86/boot/compressed/sev.c:263:13: error: implicit declaration of function ‘vmgexit_psc’ [-Wimplicit-function-declaration]
|             ^~~~~~~~~~~
arch/x86/boot/compressed/sev.c:266:9: error: implicit declaration of function ‘pvalidate_pages’; did you mean ‘pvalidate_4k_page’? [-Wimplicit-function-declaration]
|         ^~~~~~~~~~~~~~~
|         pvalidate_4k_page

Thanks,

	Ingo