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| author | Gleb Natapov <gleb@redhat.com> | 2009-08-24 11:54:26 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-12-03 09:32:08 +0200 |
| commit | 680b3648ba89c44ac8d0316f78a0d6e147b88809 (patch) | |
| tree | b2b40034c4c33affef8b89822673cca835874651 /arch/x86/kvm/lapic.c | |
| parent | eba0226bdfffe262e72b8360e4d0d12070e9a0f0 (diff) | |
| download | blackbird-op-linux-680b3648ba89c44ac8d0316f78a0d6e147b88809.tar.gz blackbird-op-linux-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.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index df8bcb0f66d8..8787637b1a9c 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) |
