From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH v19 11/14] x86/VPMU: Handle PMU interrupts for PV guests Date: Tue, 24 Mar 2015 11:47:12 -0400 Message-ID: <55118700.9050204@oracle.com> References: <1426604051-2980-1-git-send-email-boris.ostrovsky@oracle.com> <1426604051-2980-12-git-send-email-boris.ostrovsky@oracle.com> <551182A3020000780006D030@mail.emea.novell.com> <55117F2B.7010900@oracle.com> <5511928F020000780006D13E@mail.emea.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5511928F020000780006D13E@mail.emea.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: kevin.tian@intel.com, suravee.suthikulpanit@amd.com, andrew.cooper3@citrix.com, tim@xen.org, dietmar.hahn@ts.fujitsu.com, xen-devel@lists.xen.org, Aravind.Gopalakrishnan@amd.com, jun.nakajima@intel.com, dgdegra@tycho.nsa.gov List-Id: xen-devel@lists.xenproject.org On 03/24/2015 11:36 AM, Jan Beulich wrote: >>>> On 24.03.15 at 16:13, wrote: >> On 03/24/2015 10:28 AM, Jan Beulich wrote: >>>>>> On 17.03.15 at 15:54, wrote: >>>> Changes in v19: >>>> * Adjusted for new ops interfaces (passing vcpu vs. vpmu) >>>> * Test for domain->max_cpu in choose_hwdom_vcpu() instead of >>>> 'domain->vcpu!=NULL' >>> I suppose that's something that then should also be done in patch 7? >> We only need this routine during interrupt handling (for PV(H)) and this >> is the patch that introduces this functionality. >> >> And if you are asking about the test specifically --- this is also the >> first patch where we refer to hardware_domain->vcpu[], which is what the >> test is really for. >> >> Or is it something else that you had in mind? > Yes - following Andrew's cleanup I believe the d->vcpu != NULL > check is redundant with having (perhaps indirectly) > checked d->max_vcpus > 0. Then I am not sure I understand what you are asking me to do for patch 7, sorry. -boris