Re: [PATCH] KVM: add KVM_CAP_VMX_APICV to advertise hardware apic-v support

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On 18/12/2014 04:37, zhanghailiang wrote:
>> set this bit. But the HV_X64_APIC_ACCESS_RECOMMENDED bit should
>> probably not be set if the host supports apic-v. I havn't done any
> 
> That is what this patch want to do ;)

This would cause a guest ABI change upon migration from APICv to
non-APICv hosts, so it is not possible.  Perhaps we need to set bit 8
but not bit 3.

Paolo
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