From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raghavendra K T Subject: Re: [PATCH v9 00/19] qspinlock: a 4-byte queue spinlock with PV support Date: Thu, 17 Apr 2014 23:10:28 +0530 Message-ID: <5350120C.40607@linux.vnet.ibm.com> References: <1397747051-15401-1-git-send-email-Waiman.Long@hp.com> <20140417172246.GA9849@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1WaqDs-0000ie-BP for xen-devel@lists.xenproject.org; Thu, 17 Apr 2014 17:35:40 +0000 Received: from /spool/local by e28smtp04.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 17 Apr 2014 23:05:35 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id CB9ACE0044 for ; Thu, 17 Apr 2014 23:09:53 +0530 (IST) Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s3HHZd5X7340456 for ; Thu, 17 Apr 2014 23:05:39 +0530 Received: from d28av03.in.ibm.com (localhost [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s3HHZV0F028140 for ; Thu, 17 Apr 2014 23:05:32 +0530 In-Reply-To: <20140417172246.GA9849@localhost.localdomain> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Konrad Rzeszutek Wilk Cc: Waiman Long , linux-arch@vger.kernel.org, Gleb Natapov , kvm@vger.kernel.org, Peter Zijlstra , Scott J Norton , x86@kernel.org, Paolo Bonzini , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Ingo Molnar , Chegu Vinod , David Vrabel , "H. Peter Anvin" , xen-devel@lists.xenproject.org, Thomas Gleixner , "Paul E. McKenney" , Linus Torvalds , Oleg Nesterov List-Id: xen-devel@lists.xenproject.org On 04/17/2014 10:53 PM, Konrad Rzeszutek Wilk wrote: > On Thu, Apr 17, 2014 at 11:03:52AM -0400, Waiman Long wrote: >> v8->v9: >> - Integrate PeterZ's version of the queue spinlock patch with some >> modification: >> http://lkml.kernel.org/r/20140310154236.038181843@infradead.org >> - Break the more complex patches into smaller ones to ease review effort. >> - Fix a racing condition in the PV qspinlock code. > > I am not seeing anything mentioning that the overcommit scenario > for KVM and Xen had been fixed. Or was the 'racing condition' said > issue? Saw changes in patch 18 that fixes for kvm (19 for xen). 'll test the series and confirm.