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KVM: arm/arm64: timer: Switch to CLOCK_MONOTONIC_RAW

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In order to avoid NTP messing with the guest timer behind our back,
use the new and improved monotonic raw version of the hrtimers.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Tomasz Nowicki <tn@semihalf.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Link: http://lkml.kernel.org/r/1452879670-16133-4-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Marc Zyngier 2016-01-15 17:41:10 +00:00 committed by Thomas Gleixner
parent 9006a01829
commit a6e707ddbd
1 changed files with 2 additions and 2 deletions
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4
virt/kvm/arm/arch_timer.c
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@ -48,7 +48,7 @@ static bool timer_is_armed(struct arch_timer_cpu *timer)
static void timer_arm(struct arch_timer_cpu *timer, u64 ns) static void timer_arm(struct arch_timer_cpu *timer, u64 ns)
{ {
timer->armed = true; timer->armed = true;
hrtimer_start(&timer->timer, ktime_add_ns(ktime_get(), ns), hrtimer_start(&timer->timer, ktime_add_ns(ktime_get_raw(), ns),
HRTIMER_MODE_ABS); HRTIMER_MODE_ABS);
} }
@ -308,7 +308,7 @@ void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu)
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
INIT_WORK(&timer->expired, kvm_timer_inject_irq_work); INIT_WORK(&timer->expired, kvm_timer_inject_irq_work);
hrtimer_init(&timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); hrtimer_init(&timer->timer, CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
timer->timer.function = kvm_timer_expire; timer->timer.function = kvm_timer_expire;
} }