From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Virtualization of the CPU Performance Monitoring Unit Date: Fri, 6 Apr 2012 14:36:18 -0400 Message-ID: <20120406183618.GA13473@phenom.dumpdata.com> References: <4F7F1D14.9040208@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <4F7F1D14.9040208@amd.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Wei Huang Cc: xen-devel@lists.xen.org, Lin Ming List-Id: xen-devel@lists.xenproject.org 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).