[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] 2.6.37 dom0 under Xen 4.1 clocksource not working
On Wed, 26 Jan 2011, Daniel De Graaf wrote: > On 01/26/2011 10:40 AM, Jeremy Fitzhardinge wrote: > > On 01/10/2011 07:06 AM, Daniel De Graaf wrote: > >> When booting 2.6.37 (from kernel.org) under Xen 4.1, there are > >> apparently issues with timer interrupts being delivered to the dom0. > >> Repeatedly causing an interrupt (for example, the ACPI power button) will > >> allow the system to boot, as does adding "clocksource=jiffies" to the > >> kernel command line. This is only present under Xen, not when booting the > >> same kernel on real hardware. > > > > Ah, yes. This is from the cpuidle stuff, I think. Does booting with > > "idle=halt" work? > > > > Yes, clocksource=xen idle=halt works. I have a testbox that can reproduce this problem. It seems to be caused by the cpuidle driver that overrides pm_idle unless boot_option_idle_override is set to something other than the default. This patch fixes the problem for me: --- diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index a3d28a1..7e85979 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -353,6 +353,7 @@ void __init xen_arch_setup(void) boot_cpu_data.hlt_works_ok = 1; #endif pm_idle = default_idle; + boot_option_idle_override = IDLE_HALT; fiddle_vdso(); } _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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