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[Xen-devel] Re: [PATCH RFC V2 3/5] kvm hypervisor : Add two hypercalls to support pv-ticketlock



* Avi Kivity <avi@xxxxxxxxxx> [2011-10-24 15:09:25]:

> > I guess with that change, we can also dropthe need for other hypercall
> > introduced in this patch (kvm_pv_kick_cpu_op()). Essentially a vcpu 
> > sleeping 
> > because of HLT instruction can be woken up by a IPI issued by vcpu 
> > releasing a
> > lock.
> 
> Not if interrupts are disabled.

Hmm yes ..so we need a kick hypercall then.

- vatsa

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