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Re: [Xen-devel] [xen-unstable] Commit 2ca9fbd739b8a72b16dd790d0fff7b75f5488fb8 AMD IOMMU: allocate IRTE entries instead of using a static mapping, makes dom0 boot process stall several times.



>>> On 16.08.13 at 09:42, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> wrote:

> Friday, August 16, 2013, 9:21:01 AM, you wrote:
> 
>>>>> On 16.08.13 at 01:41, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> wrote:
>>> Ok i have to revise ... *sigh* ... it gets stuck with clocksource=pit as 
>>> well (although not always it seems)
> 
>> Not that surprising. Doing it the other way round (suppressing
>> use of cpuidle and cpufreq - first together, then separately -
>> would seem like the more promising route with the information
>> you gathered, with cpuidle being the more likely of the two.
> 
> Well not specifying "cpuidle" and "cpufreq=xen" on the xen boot line in 
> grub, should not enable them for the clocksource=pit case right ?
> I did exactly that on this boot.

Depends on which cpuidle driver the system is using - at least in
the mwait_idle case, omitting "cpuidle" doesn't help; you'd need
to explicitly say "no-cpuidle" (or equivalent).

Jan


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