From 8feb4a04dc756002f78df0026e58118669de4851 Mon Sep 17 00:00:00 2001 From: Feng Wu Date: Fri, 18 Sep 2015 22:29:47 +0800 Subject: KVM: Define a new interface kvm_intr_is_single_vcpu() This patch defines a new interface kvm_intr_is_single_vcpu(), which can returns whether the interrupt is for single-CPU or not. It is used by VT-d PI, since now we only support single-CPU interrupts, For lowest-priority interrupts, if user configures it via /proc/irq or uses irqbalance to make it single-CPU, we can use PI to deliver the interrupts to it. Full functionality of lowest-priority support will be added later. Signed-off-by: Feng Wu Reviewed-by: Alex Williamson Signed-off-by: Paolo Bonzini --- arch/x86/kvm/lapic.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/kvm/lapic.h') diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index 7259d272416f..fde8e35d5850 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -168,4 +168,6 @@ bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector); void wait_lapic_expire(struct kvm_vcpu *vcpu); +bool kvm_intr_is_single_vcpu_fast(struct kvm *kvm, struct kvm_lapic_irq *irq, + struct kvm_vcpu **dest_vcpu); #endif -- cgit v1.2.3