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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-23 23:08:43 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-09-23 23:08:43 +0200 |
| commit | d7a4b414eed51f1653bb05ebe84122bf9a7ae18b (patch) | |
| tree | bd6603a0c27de4c138a1767871897e9cd3e1a1d2 /arch/x86/kvm/timer.c | |
| parent | 1f0ab40976460bc4673fa204ce917a725185d8f2 (diff) | |
| parent | a724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff) | |
Merge commit 'linus/master' into tracing/kprobes
Conflicts:
kernel/trace/Makefile
kernel/trace/trace.h
kernel/trace/trace_event_types.h
kernel/trace/trace_export.c
Merge reason:
Sync with latest significant tracing core changes.
Diffstat (limited to 'arch/x86/kvm/timer.c')
| -rw-r--r-- | arch/x86/kvm/timer.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/x86/kvm/timer.c b/arch/x86/kvm/timer.c index 86dbac072d0..eea40439066 100644 --- a/arch/x86/kvm/timer.c +++ b/arch/x86/kvm/timer.c @@ -9,12 +9,16 @@ static int __kvm_timer_fn(struct kvm_vcpu *vcpu, struct kvm_timer *ktimer) int restart_timer = 0; wait_queue_head_t *q = &vcpu->wq; - /* FIXME: this code should not know anything about vcpus */ - if (!atomic_inc_and_test(&ktimer->pending)) + /* + * There is a race window between reading and incrementing, but we do + * not care about potentially loosing timer events in the !reinject + * case anyway. + */ + if (ktimer->reinject || !atomic_read(&ktimer->pending)) { + atomic_inc(&ktimer->pending); + /* FIXME: this code should not know anything about vcpus */ set_bit(KVM_REQ_PENDING_TIMER, &vcpu->requests); - - if (!ktimer->reinject) - atomic_set(&ktimer->pending, 1); + } if (waitqueue_active(q)) wake_up_interruptible(q); @@ -33,7 +37,7 @@ enum hrtimer_restart kvm_timer_fn(struct hrtimer *data) struct kvm_vcpu *vcpu; struct kvm_timer *ktimer = container_of(data, struct kvm_timer, timer); - vcpu = ktimer->kvm->vcpus[ktimer->vcpu_id]; + vcpu = ktimer->vcpu; if (!vcpu) return HRTIMER_NORESTART; |