aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kvm/lapic.c
diff options
context:
space:
mode:
authorGleb Natapov <gleb@redhat.com>2009-08-24 11:54:26 +0300
committerAvi Kivity <avi@redhat.com>2009-12-03 09:32:08 +0200
commit680b3648ba89c44ac8d0316f78a0d6e147b88809 (patch)
treeb2b40034c4c33affef8b89822673cca835874651 /arch/x86/kvm/lapic.c
parenteba0226bdfffe262e72b8360e4d0d12070e9a0f0 (diff)
downloadmrst-s0i3-test-680b3648ba89c44ac8d0316f78a0d6e147b88809.tar.gz
mrst-s0i3-test-680b3648ba89c44ac8d0316f78a0d6e147b88809.tar.xz
mrst-s0i3-test-680b3648ba89c44ac8d0316f78a0d6e147b88809.zip
KVM: Drop kvm->irq_lock lock from irq injection path
The only thing it protects now is interrupt injection into lapic and this can work lockless. Even now with kvm->irq_lock in place access to lapic is not entirely serialized since vcpu access doesn't take kvm->irq_lock. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
-rw-r--r--arch/x86/kvm/lapic.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index df8bcb0f66d..8787637b1a9 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -501,9 +501,7 @@ static void apic_send_ipi(struct kvm_lapic *apic)
irq.trig_mode, irq.level, irq.dest_mode, irq.delivery_mode,
irq.vector);
- mutex_lock(&apic->vcpu->kvm->irq_lock);
kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq);
- mutex_unlock(&apic->vcpu->kvm->irq_lock);
}
static u32 apic_get_tmcct(struct kvm_lapic *apic)