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xen-devel
RE: [Xen-devel] Page fault handler preemptable?
>From: Mike Sun
>Sent: 2008年9月24日 5:04
>
>Sorry for such a basic question... but is the page fault handler
>routine in the hypervisor preemptable? For example, let's say guest
>domain A is being live migrated. As it's running, a page fault
>occurs. Can the page fault handler be preempted in the middle by say
>the live migration process in dom0?
>
No. Xen itself is not preemptive, and schedule only happens in
the boundary just before returning to guest context.
Thanks,
Kevin
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