Re: KVM PMU virtualization

Avi Kivity
2010-02-26T13:33:58Z

On 02/26/2010 03:27 PM, Ingo Molnar wrote:
>
> For Linux<->Linux the sanest, tier-1 approach would be to map sys_perf_open()
> on the guest side over to the host, transparently, via a paravirt driver.
>

Let us for the purpose of this discussion assume that we are also
interested in supporting Windows and older Linux. Paravirt
optimizations can be added after we have the basic functionality, if
they prove necessary.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.