linux-kernel - Re: Kernel 6.9 regression: X86: Bogus messages from topology detection

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Message-ID: <r7yx564fpovn2zhelafj6binigdatjrnw5pqbn2qqafn6fxey6@q4qekfqqby4l>
Date: Mon, 27 May 2024 23:34:14 +0200
From: Christian Heusel <christian@...sel.eu>
To: Peter Schneider <pschneider1968@...glemail.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, 
	LKML <linux-kernel@...r.kernel.org>, x86@...nel.org, stable@...r.kernel.org, 
	regressions@...ts.linux.dev
Subject: Re: Kernel 6.9 regression: X86: Bogus messages from topology
 detection

Hey Peter,

On 24/05/27 11:15PM, Peter Schneider wrote:
> 
> I want to add one thing: there is a log entry in the dmesg output of a "bad"
> kernel, which I initially overlooked, because it is way up, and I noticed
> this just now. I guess this might be relevant:
> 
> [    1.683564] [Firmware Bug]: CPU0: Topology domain 0 shift 1 != 5
> 
> This does not appear in the 6.8 kernel dmesg.
> 

I also can't comment on whether this is relevant or not, but I have
noticed this in more places:

    - https://bugzilla.kernel.org/show_bug.cgi?id=218879
    - https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/issues/57

Cheers,
Chris

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