[Xen-devel] [PATCH] xen/arm: disable cpuidle when linux is running as dom0

Julien Grall julien.grall at linaro.org
Mon Jul 15 12:22:00 EDT 2013

On 07/15/2013 04:25 PM, Konrad Rzeszutek Wilk wrote:
> On Mon, Jul 15, 2013 at 03:21:41PM +0100, Julien Grall wrote:
>> When linux is running as dom0, Xen doesn't show the physical cpu but a
>> virtual CPU.
>> On some ARM SOC (for instance the exynos 5250), linux registers callbacks
>> for cpuidle. When these callbacks are called, they will modify
>> directly the physical cpu not the virtual one. It can impact the whole board
>> instead of dom0.
> Should you also call disable_cpufreq() ?

I had some issue on the versatile express when cpufreq was disabled.
I will give another try and see the exact error.


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