[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PROPOSAL] Event channel for SMP-VMs: per-vCPU or per-OS?
On Tue, Oct 29, 2013 at 11:25 PM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
I agree with you to some extent. But the question is: how frequently such
"contention" will happen? As explained, upcall handler is called only when the processor switches from the hypervisor to the guest OS, and trapping into the hypervisor are mostly caused by things like hypercall, IPI, etc.
The probability that multiple switches happen "exactly" at the same same, which I guess, is very small.. Thanks, Luwei _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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