Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-21 Thread Stefano Stabellini
On Sun, 21 Jul 2013, Stefano Stabellini wrote: > On Fri, 19 Jul 2013, 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 and cpufreq. When

Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-21 Thread Stefano Stabellini
On Fri, 19 Jul 2013, 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 and cpufreq. When these callbacks are called, they will modify > directly the

Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-21 Thread Stefano Stabellini
On Fri, 19 Jul 2013, 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 and cpufreq. When these callbacks are called, they will modify directly the

Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-21 Thread Stefano Stabellini
On Sun, 21 Jul 2013, Stefano Stabellini wrote: On Fri, 19 Jul 2013, 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 and cpufreq. When these

Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-19 Thread Konrad Rzeszutek Wilk
On Fri, Jul 19, 2013 at 12:27:00PM +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 and cpufreq. When these callbacks are called, they will

[PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-19 Thread Julien Grall
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 and cpufreq. When these callbacks are called, they will modify directly the physical cpu not the virtual one. It can impact the

[PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-19 Thread Julien Grall
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 and cpufreq. When these callbacks are called, they will modify directly the physical cpu not the virtual one. It can impact the

Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

2013-07-19 Thread Konrad Rzeszutek Wilk
On Fri, Jul 19, 2013 at 12:27:00PM +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 and cpufreq. When these callbacks are called, they will modify