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authorQing He <qing.he@intel.com>2007-09-17 02:47:13 -0400
committerAvi Kivity <avi@qumranet.com>2007-10-13 04:18:26 -0400
commit40487c680d5855459dfdce340df13d40071bb774 (patch)
treeabc0ec56ecb1b6d1533b918621c060a1d38fccef /drivers/kvm/irq.h
parent5cd4f6fd8506f59cb8a232f364c54f6bd8e5150a (diff)
KVM: deliver PIC interrupt only to vcpu0
This patch changes the PIC interrupts delivery. Now it is only delivered to vcpu0 when either condition is met (on vcpu0): 1. local APIC is hardware disabled 2. LVT0 is unmasked and configured to delivery mode ExtInt It fixes the 2x faster wall clock on x86_64 and SMP i386 Linux guests Signed-off-by: Eddie (Yaozu) Dong <eddie.dong@intel.com> Signed-off-by: Qing He <qing.he@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/irq.h')
-rw-r--r--drivers/kvm/irq.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h
index f324cfb40084..ec46a09e2135 100644
--- a/drivers/kvm/irq.h
+++ b/drivers/kvm/irq.h
@@ -135,6 +135,7 @@ do { \
135 135
136void kvm_vcpu_kick(struct kvm_vcpu *vcpu); 136void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
137int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu); 137int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu);
138int kvm_apic_accept_pic_intr(struct kvm_vcpu *vcpu);
138int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu); 139int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu);
139int kvm_create_lapic(struct kvm_vcpu *vcpu); 140int kvm_create_lapic(struct kvm_vcpu *vcpu);
140void kvm_free_apic(struct kvm_lapic *apic); 141void kvm_free_apic(struct kvm_lapic *apic);