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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Native hypercall basics using int 82
On 17/12/2008 11:46, "Andrew Lyon" <andrew.lyon@xxxxxxxxx> wrote: > How is it enabled in the open source edition? I cannot find any documentation. Add 'viridian=1' to your domain config file. > And how does it improve performance? APIC accesses are done via emulated MSRs rather than emulated mmio cycles, which is a teeny bit faster. Also we implement spin-wait notofications, so a vcpu can be descheduled rather than spin. There's others also we could implement but it's not clear it would be a win for us. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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