From: Yang Zhang <yang.z.zhang@xxxxxxxxx> Posted Interrupt allows APIC interrupts to inject directly to guest VMM's involvement. When deliverying an virtual interrupt, VMM needn't to send an IPI to kick down target vcpu. Instead, send a notification event to the PCPU and hardware will inject the interrupt to guest without vmexit. In this patch, we reserved a global vector as notification event vector. Also, 'ack interrupt on vmexit' is required by posted interrupt, we need to enable it firstly. Yang Zhang (2): x86: Enable ack interrupt on vmexit x86, apicv: Add Posted Interrupt supporting arch/x86/include/asm/entry_arch.h | 1 + arch/x86/include/asm/hw_irq.h | 1 + arch/x86/include/asm/irq.h | 1 + arch/x86/include/asm/irq_vectors.h | 1 + arch/x86/include/asm/kvm_host.h | 3 + arch/x86/include/asm/vmx.h | 4 + arch/x86/kernel/entry_64.S | 2 + arch/x86/kernel/irq.c | 25 ++++++ arch/x86/kernel/irqinit.c | 2 + arch/x86/kvm/lapic.c | 16 +++- arch/x86/kvm/lapic.h | 1 + arch/x86/kvm/vmx.c | 153 +++++++++++++++++++++++++++++++++--- 12 files changed, 194 insertions(+), 16 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
