Re: [PATCH V2 2/5] ara virt interface of perf to support kvm guestos statistics collection in guest os

[Avi Kivity]

On 06/22/2010 12:25 PM, Zhang, Yanmin wrote:
> > I'm talking about the guest/host interface.  So you have one vmexit and
> > many host perf calls.
> >      
> I understood what you were speaking. I mean, perf generic codes operate perf_event
> one by one. At low layer, we just know one perf_event before calling hypercall to
> vmexit to host kernel.
>    

Ah.

We might fix that by having the perf ops work on guest memory, and add a 
commit that transfers them to the host.  But this is complicated and can 
be left for later.

--
error compiling committee.c: too many arguments to function

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