[Xen-devel] What's the state of vCPU scheduled out by hypervisor from the view of guest?

[xu cong <congxumail@xxxxxxxxx>]

Hi All,

In a virtual SMP guest, when one vCPU is scheduled out, what's the view of guest? Is it similar to removing one cpu via hotplug temporally? How about the timer on the vCPU scheduled out? For example, assume the guest OS is linux, its process scheduler (e.g. CFS) need update the vruntime and other information for each process. When one vCPU gets scheduled again after waiting in run queue, how does the process scheduler update the information for the processes running on it? Thanks.

Regards,

Cong

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