From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH v1 00/13] x86/PMU: Xen PMU PV support Date: Tue, 10 Sep 2013 11:47:27 -0400 Message-ID: <522F3F0F.9060207@oracle.com> References: <1378826470-4085-1-git-send-email-boris.ostrovsky@oracle.com> <522F584002000078000F2203@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1VJQ8W-0003ff-Vk for xen-devel@lists.xenproject.org; Tue, 10 Sep 2013 15:45:53 +0000 In-Reply-To: <522F584002000078000F2203@nat28.tlf.novell.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: Jan Beulich Cc: suravee.suthikulpanit@amd.com, George.Dunlap@eu.citrix.com, jacob.shin@amd.com, eddie.dong@intel.com, dietmar.hahn@ts.fujitsu.com, jun.nakajima@intel.com, xen-devel List-Id: xen-devel@lists.xenproject.org On 09/10/2013 11:34 AM, Jan Beulich wrote: >>>> On 10.09.13 at 17:20, Boris Ostrovsky wrote: >> This version has following limitations: >> * For accurate profiling of dom0/Xen dom0 VCPUs should be pinned. >> * Hypervisor code is only profiled on processors that have running dom0 VCPUs >> on them. > With that I assume this is an RFC rather than full-fledged submission? I was thinking that this would be something like stage 1 implementation (and probably should have mentioned this in the cover letter). For this stage I wanted to confine all changes on Linux side to xen subtrees. Properly addressing the above limitation would likely require changes in non-xen sources (change in perf file format, remote MSR access etc.). -boris