Re: [Xen-devel] Virtualization of the CPU Performance Monitoring Unit

[Marcus Granado <marcus.granado@xxxxxxxxxx>]

On 08/04/12 07:48, Lin Ming wrote:
> > 2. The PMU project description in the wiki is vague. I know HVM guests
> > support virtualized PMU. Please check vpmu.c files in /hvm, /svm, and /vmx
> > directories. You better ask mentors for details (maybe this is XCP
> > specific?).
Yes, the description is vague, we should update the page. The idea was 
to enable users to run hardware profilers in dom0 and in any domU, PV or 
HVM. This would include implementing what is missing for dom0/PV 
domains, and to confirm in HVM domains that profilers such as oprofile, 
hwpmc, intel performance counter monitor at least are running without 
problems in the existing vPMU implementation. The original idea was to 
add support to XCP, but please feel free to add support to xen-unstable 
and the latest linux kernel; XCP will use those at some point.
cheers,
Marcus



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