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From: Thomas Gleixner <tglx@linutronix.de>
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To: Laura Nao <laura.nao@collabora.com>
Cc: kernel@collabora.com, laura.nao@collabora.com,
 linux-kernel@vger.kernel.org, regressions@leemhuis.info,
 regressions@lists.linux.dev, x86@kernel.org
Subject: Re: [REGRESSION] mainline boot regression on AMD Stoney Ridge
 Chromebooks
In-Reply-To: <20240405135837.306376-1-laura.nao@collabora.com>
References: <87ttkg7wvg.ffs@tglx>
 <20240405135837.306376-1-laura.nao@collabora.com>
Date: Fri, 05 Apr 2024 16:59:08 +0200
Message-ID: <87msq797pf.ffs@tglx>
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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