Re: [PATCH 0/1] x2apic implementation for kvm

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Sheng Yang wrote:
I think that means the PV interface for lapic. And yes, we can support it follow MS's interface, but x2apic still seems another story as you noted... I still don't think support x2apic here would bring us more benefits.

x2apic has the following benefit:

- msr exits are faster than mmio (no page table walk, emulation)
- no need to read back ICR to look at the busy bit
- one ICR write instead of two
- potential to support large guests once we add interrupt remapping
- shared code with the Hyper-V paravirt interface

--
error compiling committee.c: too many arguments to function

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