[Xen-devel] Question about VCPU's and VM's Blocked state

[Huibin QIAN <qianhb@xxxxxxxxxx>]

I have some doubt about the vcpu scheduling in xen.

what would make the vcpu be blocked?
In HVM, does the hlt instruction make a vmexit and the hypervisor put the vcpu into sleep queue? Or anything else causes it? What about the PV?

When we use 'xm list' we can get the vm state ,usually it is blocked or running, and what meaning is the blocked state?
Is that mean all the vcpus blonged to this domain are in the sleep queue?

 

Thanks

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