Re: [PATCH RFC V2 3/5] kvm hypervisor : Add two hypercalls tosupport pv-ticketlock

From: Srivatsa Vaddagiri
Date: Mon Oct 24 2011 - 09:50:46 EST


* 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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