Re: [PATCH RFC 2/2] kvm: Be courteous to other VMs in overcommittedscenario in PLE handler

From: Peter Zijlstra
Date: Mon Sep 24 2012 - 12:06:03 EST


On Mon, 2012-09-24 at 17:58 +0200, Avi Kivity wrote:
> There is the TSC deadline timer mode of newer Intels. Programming the
> timer is a simple wrmsr, and it will fire immediately if it already
> expired. Unfortunately on AMDs it is not available, and on virtual
> hardware it will be slow (~1-2 usec).

Its also still a LAPIC write -- disguised as an MSR though :/

Also, who gives a hoot about virtual crap ;-)
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