linux-kernel - Re: [REGRESSION] mainline boot regression on AMD Stoney Ridge Chromebooks

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Date: Fri, 05 Apr 2024 16:59:08 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Laura Nao <laura.nao@...labora.com>
Cc: kernel@...labora.com, laura.nao@...labora.com,
 linux-kernel@...r.kernel.org, regressions@...mhuis.info,
 regressions@...ts.linux.dev, x86@...nel.org
Subject: Re: [REGRESSION] mainline boot regression on AMD Stoney Ridge
 Chromebooks

On Fri, Apr 05 2024 at 15:58, Laura Nao wrote:
> On 4/5/24 15:38, Thomas Gleixner wrote:
>> 
>> Can you please boot a working kernel and provide the output of:
>> 
>> # rdmsr 0xc0011005
>
> # rdmsr 0xc0011005
> 2fabbfff2fd3fbff

Ok. So the CPU does not advertise FEATURE_TOPOEXT which is consistent
with CPUID.

Now I'm even more puzzled because then the patch I gave you should make
a difference. I need to run some errands now, I will provide a debug
patch later this evening.

Thanks,

        tglx