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

[Marek Marczykowski <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

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).

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

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