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xen: resume timers on all vcpus

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On resume, the vcpu timer modes will not be restored.  The timer
infrastructure doesn't do this for us, since it assumes the cpus
are offline.  We can just poke the other vcpus into the right mode
directly though.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2008-05-31 01:33:03 +01:00 committed by Ingo Molnar
parent 9c7a794209
commit d07af1f0e3
3 changed files with 15 additions and 0 deletions
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1
arch/x86/xen/suspend.c
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@ -38,6 +38,7 @@ void xen_post_suspend(int suspend_cancelled)
xen_cpu_initialized_map = cpu_online_map;
#endif
xen_vcpu_restore();
xen_timer_resume();
}
}

13
arch/x86/xen/time.c
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@ -572,6 +572,19 @@ void xen_setup_cpu_clockevents(void)
clockevents_register_device(&__get_cpu_var(xen_clock_events));
}
void xen_timer_resume(void)
{
int cpu;
if (xen_clockevent != &xen_vcpuop_clockevent)
return;
for_each_online_cpu(cpu) {
if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL))
BUG();
}
}
__init void xen_time_init(void)
{
int cpu = smp_processor_id();

1
arch/x86/xen/xen-ops.h
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@ -37,6 +37,7 @@ void __init xen_time_init(void);
unsigned long xen_get_wallclock(void);
int xen_set_wallclock(unsigned long time);
unsigned long long xen_sched_clock(void);
void xen_timer_resume(void);
irqreturn_t xen_debug_interrupt(int irq, void *dev_id);