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

On Fri, Apr 06, 2012 at 11:43:00AM -0500, Wei Huang wrote:
> On 04/06/2012 10:41 AM, Lin Ming wrote:
> >Hi list,
> >
> >Is anybody working on virtualization of the CPU Performance Monitoring Unit?
> >
> >There are 2 PMU related projects listed on GSoC 2012 page.
> >http://wiki.xen.org/wiki/Archived/GSoC_2012_Ideas
> >
> >- Virtualization of the CPU Performance Monitoring Unit
> >- Perf support for Xen
> >
> >I'm interested on these 2 projects.
> Hi Lin,
> 1. I don't think Xen was accepted as an organization for 2012 GSOC.
> See
> http://lists.xen.org/archives/html/xen-devel/2012-03/msg02080.html.
> 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?).

This is dom0 related. So being able to use perf to instrument
the hypervisor (and the guests from dom0).

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