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

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Message-Id: <20240410161141.261818-1-laura.nao@collabora.com>
Date: Wed, 10 Apr 2024 18:11:41 +0200
From: Laura Nao <laura.nao@...labora.com>
To: tglx@...utronix.de
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

Hi Thomas,

On 4/10/24 15:57, Thomas Gleixner wrote:
> Laura!
> 
> On Wed, Apr 10 2024 at 10:15, Laura Nao wrote:
>> On 4/9/24 14:25, Thomas Gleixner wrote:
>>> Can you please replace that patch with the one below?
>>
>> So, with this patch applied on top of ace278e7eca6 the kernel doesn't
>> boot anymore - reference test job:
>> https://lava.collabora.dev/scheduler/job/13324010
>>
>> I see the only change between the second and third patch you provided,
>> besides the debug prints, is:
>>
>> -	if (!topo_is_converted(c))
>> -		return;
>> -
> 
> Right. So this limits the area to search significantly.
> 
>> Printing the debug information without this probably doesn't really help,
>> but just in case it's useful: I tried excluding the change above from the
>> patch while leaving everything else unchanged - reference test job:
>> https://lava.collabora.dev/scheduler/job/13324298 (also pasted the
>> kernel log here for easier consultation:
>> https://pastebin.com/raw/TQBDvCah)
>>
>> Hope this helps,
> 
> It does. Good idea!
> 
> I just moved the exit check a bit so we should see the scan info. That
> should tell me what goes south.
>

Here's the full kernel log with the latest patch applied: 
https://pastebin.com/raw/r2CkP396

Reference test job: https://lava.collabora.dev/scheduler/job/13328709

Thanks!

Laura