diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2010-02-17 17:00:41 +0300 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 18:36:12 +0300 |
| commit | fa8273e9549b3cee2947d1aebe5242e7a25eb3de (patch) | |
| tree | 4a9c8b38fe5a4a1a8d366f898afd47512dee1f36 /arch/x86/kvm/i8254.c | |
| parent | e424e1918345ab17d3beb068b8745ab1706d0e1b (diff) | |
| download | linux-fa8273e9549b3cee2947d1aebe5242e7a25eb3de.tar.xz | |
KVM: Convert i8254/i8259 locks to raw_spinlocks
The i8254/i8259 locks need to be real spinlocks on preempt-rt. Convert
them to raw_spinlock. No change for !RT kernels.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/i8254.c')
| -rw-r--r-- | arch/x86/kvm/i8254.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index c9569f20dfba..294698b6daff 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -242,11 +242,11 @@ static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian) { struct kvm_kpit_state *ps = container_of(kian, struct kvm_kpit_state, irq_ack_notifier); - spin_lock(&ps->inject_lock); + raw_spin_lock(&ps->inject_lock); if (atomic_dec_return(&ps->pit_timer.pending) < 0) atomic_inc(&ps->pit_timer.pending); ps->irq_ack = 1; - spin_unlock(&ps->inject_lock); + raw_spin_unlock(&ps->inject_lock); } void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu) @@ -624,7 +624,7 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) mutex_init(&pit->pit_state.lock); mutex_lock(&pit->pit_state.lock); - spin_lock_init(&pit->pit_state.inject_lock); + raw_spin_lock_init(&pit->pit_state.inject_lock); kvm->arch.vpit = pit; pit->kvm = kvm; @@ -724,12 +724,12 @@ void kvm_inject_pit_timer_irqs(struct kvm_vcpu *vcpu) /* Try to inject pending interrupts when * last one has been acked. */ - spin_lock(&ps->inject_lock); + raw_spin_lock(&ps->inject_lock); if (atomic_read(&ps->pit_timer.pending) && ps->irq_ack) { ps->irq_ack = 0; inject = 1; } - spin_unlock(&ps->inject_lock); + raw_spin_unlock(&ps->inject_lock); if (inject) __inject_pit_timer_intr(kvm); } |