[RFC v2 PATCH 19/21] KVM: Enable direct EOI for directly routed interrupts to guests

Enable direct access to EOI MSR of x2apic to accelerate guests. This accelerate handling of interrupts delivered directly to guest from passed-through PCI devices. When a virtual IRQ is injected, this feature is disabled in order to route following EOI to virtual APIC. Then, it is enabled again

[RFC v2 PATCH 19/21] KVM: Enable direct EOI for directly routed interrupts to guests

Enable direct access to EOI MSR of x2apic to accelerate guests. This accelerate handling of interrupts delivered directly to guest from passed-through PCI devices. When a virtual IRQ is injected, this feature is disabled in order to route following EOI to virtual APIC. Then, it is enabled again