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-rw-r--r--arch/x86/kernel/irq.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 84b778962c66..ac0631d8996f 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -224,6 +224,28 @@ void smp_x86_platform_ipi(struct pt_regs *regs)
set_irq_regs(old_regs);
}
+#ifdef CONFIG_HAVE_KVM
+/*
+ * Handler for POSTED_INTERRUPT_VECTOR.
+ */
+void smp_kvm_posted_intr_ipi(struct pt_regs *regs)
+{
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ ack_APIC_irq();
+
+ irq_enter();
+
+ exit_idle();
+
+ inc_irq_stat(kvm_posted_intr_ipis);
+
+ irq_exit();
+
+ set_irq_regs(old_regs);
+}
+#endif
+
EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);
#ifdef CONFIG_HOTPLUG_CPU