Subject: Re: Crashes in arm qemu emulations due to 'cpufreq: governor: Replace timers with utilization ...'

From: Guenter Roeck <[email-masked]>
Date: Mon, 15 Feb 2016 17:38:06 -0800

On 02/15/2016 01:36 PM, Tony Lindgren wrote:
> * Rafael J. Wysocki <[email-masked]> [160215 12:39]:
>> On Mon, Feb 15, 2016 at 8:58 PM, Tony Lindgren <[email-masked]> wrote:
>>> * Guenter Roeck <[email-masked]> [160215 11:41]:
>>>> On 02/15/2016 11:01 AM, Tony Lindgren wrote:
>>>>>
>>>>> https://kernelci.org/boot/all/job/next/kernel/next-20160215/
>>>>>
>>>>> The SMP ones seem to fail with some regulator issues?
>>>>>
>>>>
>>>> There is another problem, introduced with 6a0712f6f199e ("PM / OPP: Add
>>>> dev_pm_opp_set_rate()"). The kernelci boot log for next-20160212:omap3-overo-tobi
>>>> and others experience that problem.
>>>>
>>>> Essentially, the code now assumes that a CPU clock always has a voltage
>>>> regulator attached to it, which is not correct. I sent out a patch to fix
>>>> that problem a minute ago.
>>>
>>> Yes that fixed it thanks.
>>
>> Can you please also check if this alternative fix from Viresh works:
>>
>> https://patchwork.kernel.org/patch/8316611/
>
> Yes that one too seems to fix the issue on SMP systems for
> me:
>
> Tested-by: Tony Lindgren <[email-masked]>
>

Same here.

Tested-by: Guenter Roeck <[email-masked]>

Guenter