mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-27 14:14:24 +08:00
KVM: arm/arm64: Let the timer expire in hardirq context on RT
The timers are canceled from an preempt-notifier which is invoked with disabled preemption which is not allowed on PREEMPT_RT. The timer callback is short so in could be invoked in hard-IRQ context on -RT. Let the timer expire on hard-IRQ context even on -RT. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Julien Grall <julien.grall@arm.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20191107095424.16647-1-bigeasy@linutronix.de
This commit is contained in:
parent
ca185b2609
commit
9090825fa9
@ -80,7 +80,7 @@ static inline bool userspace_irqchip(struct kvm *kvm)
|
||||
static void soft_timer_start(struct hrtimer *hrt, u64 ns)
|
||||
{
|
||||
hrtimer_start(hrt, ktime_add_ns(ktime_get(), ns),
|
||||
HRTIMER_MODE_ABS);
|
||||
HRTIMER_MODE_ABS_HARD);
|
||||
}
|
||||
|
||||
static void soft_timer_cancel(struct hrtimer *hrt)
|
||||
@ -697,11 +697,11 @@ void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu)
|
||||
update_vtimer_cntvoff(vcpu, kvm_phys_timer_read());
|
||||
ptimer->cntvoff = 0;
|
||||
|
||||
hrtimer_init(&timer->bg_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
|
||||
hrtimer_init(&timer->bg_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
|
||||
timer->bg_timer.function = kvm_bg_timer_expire;
|
||||
|
||||
hrtimer_init(&vtimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
|
||||
hrtimer_init(&ptimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
|
||||
hrtimer_init(&vtimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
|
||||
hrtimer_init(&ptimer->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
|
||||
vtimer->hrtimer.function = kvm_hrtimer_expire;
|
||||
ptimer->hrtimer.function = kvm_hrtimer_expire;
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user