From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH v11 for-xen-4.5 11/20] x86/VPMU: Interface for setting PMU mode and flags Date: Tue, 23 Sep 2014 17:06:25 -0400 Message-ID: <5421E0D1.7030806@oracle.com> References: <1411430281-6132-1-git-send-email-boris.ostrovsky@oracle.com> <1411430281-6132-12-git-send-email-boris.ostrovsky@oracle.com> <20140923185810.GW3007@laptop.dumpdata.com> <5421C90B.5080505@oracle.com> <5421DC73.9030803@tycho.nsa.gov> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5421DC73.9030803@tycho.nsa.gov> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Daniel De Graaf Cc: kevin.tian@intel.com, keir@xen.org, jbeulich@suse.com, jun.nakajima@intel.com, andrew.cooper3@citrix.com, tim@xen.org, dietmar.hahn@ts.fujitsu.com, xen-devel@lists.xen.org, Aravind.Gopalakrishnan@amd.com, suravee.suthikulpanit@amd.com List-Id: xen-devel@lists.xenproject.org On 09/23/2014 04:47 PM, Daniel De Graaf wrote: > On 09/23/2014 03:24 PM, Boris Ostrovsky wrote: >> >> >> I haven't looked at XSM in a few months but I remember when I tried >> to use XSM for this I found that we ran out of bits for a new >> hypercall in the permission vector. (I actually mention this in the >> cover letter, but it's way way down) >> >> The two commits that you refer to are using existing hypercalls. >> >> -boris > > The solution to running out of bits is to create another class in > order to > hold the new permissions, as has already been done for > domain/domain2. The > CQM patches (v15 03/11) already define a class xen2, so you may want > to base > on top of it so that patches don't conflict (or whatever is preferred > based > on the patchesets' relative readiness). > Thanks Daniel. Question to maintainers --- should I wait until CQM patches get in? -boris