Received: by 2002:a5b:505:0:0:0:0:0 with SMTP id o5csp2936346ybp; Sun, 6 Oct 2019 00:56:56 -0700 (PDT) X-Google-Smtp-Source: APXvYqwKRX7T/SsrzNHbgkjsNDxhOoFeNqyb+CTChavAVPrM1K7L6PZtYSmh/ozN2VNu27O+dJKc X-Received: by 2002:a17:906:f259:: with SMTP id gy25mr19171843ejb.2.1570348616649; Sun, 06 Oct 2019 00:56:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1570348616; cv=none; d=google.com; s=arc-20160816; b=LBB9KvLTpYhMc4NP92YupmXcTDNZJ/adJfkGdlWSbzB2y6L4RYhgrnL3whNFSUzLeX 0q4P6/Y0jVwOb+UvnF4FEQkuzh//1pKjkwmlaj4gp+ktF3ayYOYStp/nYicbkzOmFwAB Ykl3wRSOOowkhr+kSE6hyN9WddN9DLXXgG9myFEBV7ioE7VX+UMa5kaoEpHsBJBn4fcv M+bxyZj1HRzCzVGzV97Q1M9rMbj0Ov8UIkvBFEwiKIaqjk14bkWBDy98j+TPK/zUMfBW 8Uxl8ccY1WmZ/cSJ4WxeuFy8pmrgWdMF0pVhm8Lfx3BPTX8dVSiu6NxZpTsyyFfmNIuM TOJA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-language :content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:organization:from:references:cc:to:subject :dkim-signature; bh=CIGl62hTxZvtRryW3VI5SN1WALWHfBPpjLitA/UZU8s=; b=eUiIITdjaUbm27xvRBsV4vSUu8obQ5nL96j343sy1niG0G7eojla8eY13nQxTOJAxQ fTam+nVlIOETMUgorVus6w0TyTALHM2TK30NI5ygNzzv9oIRdZi/SShzSBEGULI/OOqC LIdQA4ygDQeg0/U7mDBBMZ0f/uWHoNe3hZuvCX/1GJW5sEpOoCmMVHw6oUFfsHbd5Hc5 xTbxwKKEZVSRrj6b19UNuWbm/dT+leM+FQUy03baeYETwBm/wqnIwpqW5KZVQBKkWiyz usLl2QVhN94ie2hjlAA7CQMMkvDjDrym0N8auEYHqKRZlaf71tQbsPB0uQ9SAh5Da480 1OJw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2019-08-05 header.b=ZYwdbdlE; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p20si4967118eju.109.2019.10.06.00.56.31; Sun, 06 Oct 2019 00:56:56 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2019-08-05 header.b=ZYwdbdlE; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726320AbfJFHyY (ORCPT + 99 others); Sun, 6 Oct 2019 03:54:24 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:51464 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726207AbfJFHyY (ORCPT ); Sun, 6 Oct 2019 03:54:24 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x967nKI5081017; Sun, 6 Oct 2019 07:52:24 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2019-08-05; bh=CIGl62hTxZvtRryW3VI5SN1WALWHfBPpjLitA/UZU8s=; b=ZYwdbdlEPC4VnRcc0shJRMn2BkpDj/SukcvmVaAsGPgi9EV+2QS3R+qNTXDu3S9JIgwj nWq+vvoUIVpm3UVploDg/Ba8EG2I7OGBD2Wzolq8VnrmxrVbQM6ysq/7JK1Emxd7d+B3 yS6NLBv3qIFVl1Vb75uxHlZ/Cwyfs2kS3RbHpIVbQlSBfp0FTybaFXzwRmD10rYDM1VC MQ966CVvsmshx/Wio0BCyeuyhUElH5vZl4aXZ0ZfePOxDMto1a+OSlGECkisWYqkEDm/ JCc6J+NDFc/J6dyB8TPJUo+eYLkek8FUiiukcSqz/mhE2ryDy6ip/ewe8HuwMmNX0ghD KQ== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by userp2120.oracle.com with ESMTP id 2vektr2q0m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 06 Oct 2019 07:52:23 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x967hu5E048615; Sun, 6 Oct 2019 07:52:22 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3020.oracle.com with ESMTP id 2vf4pfhrqy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 06 Oct 2019 07:52:22 +0000 Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x967qK6f031998; Sun, 6 Oct 2019 07:52:20 GMT Received: from [10.191.5.27] (/10.191.5.27) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 06 Oct 2019 00:52:19 -0700 Subject: Re: [PATCH v4 3/4] xen: Mark "xen_nopvspin" parameter obsolete To: Boris Ostrovsky , linux-kernel@vger.kernel.org Cc: vkuznets@redhat.com, linux-hyperv@vger.kernel.org, kvm@vger.kernel.org, kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, sashal@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, pbonzini@redhat.com, rkrcmar@redhat.com, sean.j.christopherson@intel.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, jgross@suse.com, sstabellini@kernel.org, peterz@infradead.org, Jonathan Corbet , "H. Peter Anvin" References: <1570111335-12731-1-git-send-email-zhenzhong.duan@oracle.com> <1570111335-12731-4-git-send-email-zhenzhong.duan@oracle.com> <2c644c4a-f562-3271-ce0b-e60a44d82d89@oracle.com> From: Zhenzhong Duan Organization: Oracle Corporation Message-ID: <99d15788-cc14-c8e5-80b1-0dc0777a5993@oracle.com> Date: Sun, 6 Oct 2019 15:52:12 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <2c644c4a-f562-3271-ce0b-e60a44d82d89@oracle.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9401 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910060079 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9401 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910060080 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019/10/4 22:57, Boris Ostrovsky wrote: > On 10/3/19 10:02 AM, Zhenzhong Duan wrote: >> Map "xen_nopvspin" to "nopvspin", fix stale description of "xen_nopvspin" >> as we use qspinlock now. >> >> Signed-off-by: Zhenzhong Duan >> Cc: Jonathan Corbet >> Cc: Boris Ostrovsky >> Cc: Juergen Gross >> Cc: Stefano Stabellini >> Cc: Thomas Gleixner >> Cc: Ingo Molnar >> Cc: Borislav Petkov >> Cc: "H. Peter Anvin" > Reviewed-by: Boris Ostrovsky > > with a small nit > >> void __init xen_init_spinlocks(void) >> { >> + if (nopvspin) >> + xen_pvspin = false; >> >> /* Don't need to use pvqspinlock code if there is only 1 vCPU. */ >> if (num_possible_cpus() == 1) > I'd fold the change into this 'if' statement, I think it will still be > clear what the comment refers to. Good suggestion, will do that. Thanks Zhenzhong