linux-kernel - Re: [GIT PULL] x86 fix

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Message-ID: <Z5lYvZRDjlDtEgad@gmail.com>
Date: Tue, 28 Jan 2025 23:22:53 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org,
	the arch/x86 maintainers <x86@...nel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [GIT PULL] x86 fix


* Ingo Molnar <mingo@...nel.org> wrote:

> 
> * Linus Torvalds <torvalds@...ux-foundation.org> wrote:
> 
> > On Mon, 27 Jan 2025 at 07:54, Ingo Molnar <mingo@...nel.org> wrote:
> > >
> > > Fix a build regression on certain config and build environment
> > > combinations that generate absolute references to symbols.
> > 
> > I'll hold off on this, because it looks like Ard is very close to 
> > have this fixed (and also made it non-fatal in the process).
> 
> Makes sense - meanwhile while Ard is iterating his build-warning patch 
> here's the SEV fix that should address the build failure you've 
> reported.
> 
> Please pull the latest x86/urgent Git tree from:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-2025-01-28
> 
>    # HEAD: 1105ab42a84bc11c62597005f78ccad2434fbd66 x86/sev: Disable jump tables in SEV startup code
> 
> Fix a build regression on certain config and build environment
> combinations that generate absolute references to symbols.

Erm, I phrased this poorly: the primary fix is that of a potential 
early boot crash in SEV-SNP guests - the wider build error was the 
canary that highlighted the SEV boot code bug that was benign in your 
specific environment.

Thanks,

	Ingo