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[Xen-devel] [ PATCH v2 0/3] xen: enable APIC-Register Virtualization, Virtual-interrupt delivery and add virtual x2apic support



The VMCS includes controls that enable the virtualization of interrupts and the 
Advanced Programmable Interrupt Controller (APIC).
When these controls are used, the processor will emulate many accesses to the 
APIC, track the state of the virtual APIC, and deliver virtual interrupts - all 
in VMX non-root operation without a VM exit.
You can refer to Chapter 29 of the latest SDM.
This series of patches enable APIC-Register Virtualization and 
Virtual-interrupt delivery.

PATCH 1/3: Enable APIC-Register Virtualization.

PATCH 2/3: Enable Virtual-interrupt delivery.

PATCH 3/3: Add virtual x2apic support

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