tgh wrote:
> hi
> I am using xen,and I am curious about whether Xen support the preempt
> scheduler for the VMs or not
> could the VM be prempted by xen to scheduler another VM?
>
Yes, that's the normal mode of operation. The hypervisor will timeslice
multiple vcpus onto a single vcpu.
This patch doesn't relate to that; it's whether a Xen Linux guest's
kernel can be preempted to reschedule processes while running under Xen.
The normal xen-unstable or vendor Xen kernels don't support this, but
the mainline kernel with paravirt_ops/xen support does.
J
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