From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752246AbdKGMn1 (ORCPT ); Tue, 7 Nov 2017 07:43:27 -0500 Received: from mx1.redhat.com ([209.132.183.28]:42104 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750913AbdKGMnZ (ORCPT ); Tue, 7 Nov 2017 07:43:25 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 4E6F2C047B6F Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=pbonzini@redhat.com Subject: Re: [PATCHv3 1/1] locking/qspinlock/x86: Avoid test-and-set when PV_DEDICATED is set To: Eduardo Valentin Cc: rkrcmar@redhat.com, Matt Wilson , Jonathan Corbet , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Peter Zijlstra , Waiman Long , kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, "Jan H . Schoenherr" , Anthony Liguori References: <1509999980-10828-1-git-send-email-eduval@amazon.com> <593c8cc3-f532-1868-c80f-7ef2511c7e15@redhat.com> <20171107123922.GA6336@u40b0340c692b58f6553c.ant.amazon.com> From: Paolo Bonzini Message-ID: Date: Tue, 7 Nov 2017 13:43:15 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20171107123922.GA6336@u40b0340c692b58f6553c.ant.amazon.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Tue, 07 Nov 2017 12:43:25 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/11/2017 13:39, Eduardo Valentin wrote: >> is this still needed after Waiman's patch to adaptively switch between >> tas and pvqspinlock? > Can you please point me to it ? Is it already in tip/master? > No, he just posted it: https://marc.info/?l=linux-kernel&m=150972337909996&w=2 Paolo