On 17 July 2013 14:28, Stefano Stabellini <[email protected]> wrote: > On Mon, 15 Jul 2013, 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. > > Certainly this is something that should be fixed at the hypervisor level > too. However I agree that Linux should try to avoid doing that when > running on Xen. > > > >> Should you also call disable_cpufreq() ? > > Sounds like a good idea. > Julien, could you add that to this patch?
I have checked with both the Arndale and Versatile Express without any issue. I will resend this patch with disable_cpufreq(). -- Julien Grall -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
