Re: [PATCH v1] kvm: x86: implement PV send_IPI method

[Sean Christopherson]

On Fri, Jul 18, 2025, Chao Gao wrote:
> >> >> >> From: Jason Wang <jasowang@xxxxxxxxxx>
> >If xAPIC vs. x2APIC is stable when
> >kvm_setup_pv_ipi() runs, maybe key off of that?
> 
> But the guest doesn't know if APICv is enabled or even IPI virtualization
> is enabled.

Oh yeah, duh.  Given that KVM emulates x2APIC irrespective of hardware support,
and that Linux leans heavily towards x2APIC (thanks MMIO stale data!), my vote
is to leave things as they are.