Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754475Ab3GJLhF (ORCPT ); Wed, 10 Jul 2013 07:37:05 -0400 Received: from e23smtp01.au.ibm.com ([202.81.31.143]:40879 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754183Ab3GJLhC (ORCPT ); Wed, 10 Jul 2013 07:37:02 -0400 Message-ID: <51DD482E.30605@linux.vnet.ibm.com> Date: Wed, 10 Jul 2013 17:10:30 +0530 From: Raghavendra K T Organization: IBM User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121029 Thunderbird/16.0.2 MIME-Version: 1.0 To: Gleb Natapov , Peter Zijlstra CC: Andrew Jones , mingo@redhat.com, ouyang@cs.pitt.edu, habanero@linux.vnet.ibm.com, jeremy@goop.org, x86@kernel.org, konrad.wilk@oracle.com, hpa@zytor.com, pbonzini@redhat.com, linux-doc@vger.kernel.org, xen-devel@lists.xensource.com, mtosatti@redhat.com, stefano.stabellini@eu.citrix.com, andi@firstfloor.org, attilio.rao@citrix.com, gregkh@suse.de, agraf@suse.de, chegu_vinod@hp.com, torvalds@linux-foundation.org, avi.kivity@gmail.com, tglx@linutronix.de, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, riel@redhat.com, virtualization@lists.linux-foundation.org, srivatsa.vaddagiri@gmail.com Subject: Re: [PATCH RFC V9 0/19] Paravirtualized ticket spinlocks References: <1372171802.3804.30.camel@oc2024037011.ibm.com> <51CAAA26.4090204@linux.vnet.ibm.com> <20130626113744.GA6300@hawk.usersys.redhat.com> <20130626125240.GY18508@redhat.com> <51CAEF45.3010203@linux.vnet.ibm.com> <20130626161130.GB18152@redhat.com> <51CB2AD9.5060508@linux.vnet.ibm.com> <51DBD3C2.2040807@linux.vnet.ibm.com> <20130710103325.GP24941@redhat.com> <20130710104047.GP25631@dyad.programming.kicks-ass.net> <20130710104717.GR24941@redhat.com> <51DD455D.4000701@linux.vnet.ibm.com> In-Reply-To: <51DD455D.4000701@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13071011-1618-0000-0000-0000043CF0DE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1381 Lines: 40 dropping stephen becuase of bounce On 07/10/2013 04:58 PM, Raghavendra K T wrote: > On 07/10/2013 04:17 PM, Gleb Natapov wrote: >> On Wed, Jul 10, 2013 at 12:40:47PM +0200, Peter Zijlstra wrote: >>> On Wed, Jul 10, 2013 at 01:33:25PM +0300, Gleb Natapov wrote: >>> >>> Here's an idea, trim the damn email ;-) -- not only directed at gleb. >>> >> Good idea. >> >>>>> Ingo, Gleb, >>>>> >>>>> From the results perspective, Andrew Theurer, Vinod's test results >>>>> are >>>>> pro-pvspinlock. >>>>> Could you please help me to know what will make it a mergeable >>>>> candidate?. >>>>> >>>> I need to spend more time reviewing it :) The problem with PV >>>> interfaces >>>> is that they are easy to add but hard to get rid of if better solution >>>> (HW or otherwise) appears. >>> >>> How so? Just make sure the registration for the PV interface is >>> optional; that >>> is, allow it to fail. A guest that fails the PV setup will either >>> have to try >>> another PV interface or fall back to 'native'. >>> Forgot to add. Yes currently pvspinlocks are not enabled by default and also, we have jump_label mechanism to enable it. [...] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/