Re: [Xen-devel] Only CPU0 active after ACPI S3, xen 4.1.3

[Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

On 21.12.2012 14:33, Marek Marczykowski wrote:
> On 21.12.2012 09:55, Jan Beulich wrote:
>>>>> On 21.12.12 at 05:52, Marek Marczykowski 
>>>>> <marmarek@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>> On 21.12.2012 00:17, Marek Marczykowski wrote:
>>>> With this patch applied (on 4.1.4 and 4.3-unstable), I've got original 
>>> symptom
>>>> - only CPU0 active after ACPI S3. Didn't get reboot after few tries.
>>>> "xl debug-key r" output attached.
>>>> Anyway it looks like bug was introduced somehow between 4.1.2 and 4.1.3 - 
>>>> on
>>>> 4.1.2 none of above problems happened.
>>>
>>> I've done bisect on xen 4.1 and found problematic commit:
>>> http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/1f95b55ef427 
>>
>> In that case, using "sched_ratelimit_us=0" should make the
>> problem go away again - did you try that?
> 
> This option does not help when trying 4.1.4, but does when trying xen compiled
> from above c/s.
> 
>>> Unfortunately in xen-unstable parent of corresponding commit still have the
>>> same problem, so there must be something more wrong.
>>
>> Which is why we'd need to be really certain that the c/s you
>> spotted really is relevant here (to me it doesn't look like having
>> an effect on resume at all).
> 
> So perhaps there is other problematic commit, which was backported to 4.1
> later (than it is in xen-unstable).

Or above commit only trigger some other bug...

-- 
Best Regards / Pozdrawiam,
Marek Marczykowski
Invisible Things Lab

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