From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=DATE_IN_PAST_12_24, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A83DC352AA for ; Tue, 1 Oct 2019 12:40:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D186C21920 for ; Tue, 1 Oct 2019 12:40:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="INVTms3h" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732122AbfJAMkG (ORCPT ); Tue, 1 Oct 2019 08:40:06 -0400 Received: from userp2130.oracle.com ([156.151.31.86]:55510 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725821AbfJAMkG (ORCPT ); Tue, 1 Oct 2019 08:40:06 -0400 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x91CNmOP189019; Tue, 1 Oct 2019 12:39:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id; s=corp-2019-08-05; bh=09vuM+FI7NxO8/Kyfj1/77S5kHlyhvK/1Zrag65PIJs=; b=INVTms3hmYdg2XCsANohCJ45RpKZQkWZZT/uZKYecgwyXKcIIMA7HF2x8Ay9KgFImxlh tWhaBstAVUew2Xi2+qASckzkc2TXbgSlyg//2VP2/Oiq3jSSGlVx0cYRklQx5od5Lgvd bHFtmNmnz/U/qmUnXqmJoALmYxhW655Va6LgNboqx4XYTjryFvKuqr2PF2fDgjeo5Saj cZcZFoBX0IlwU4dpB+vjfYjbIfWJDBO/Q0CJenAvw6hryjt9bzJkJ74XCxEYFtmr6Kfq LuLSIxDGeeIASdgXuK964/eP0FS00wJVqOwkzjzVomCL+QmA3X6hGpaF89lVNsgPI82Y gw== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2130.oracle.com with ESMTP id 2v9xxunhx3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 01 Oct 2019 12:39:55 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x91COIRk196156; Tue, 1 Oct 2019 12:39:55 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userp3030.oracle.com with ESMTP id 2vbmpygamh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 01 Oct 2019 12:39:55 +0000 Received: from abhmp0010.oracle.com (abhmp0010.oracle.com [141.146.116.16]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x91CdsJT010037; Tue, 1 Oct 2019 12:39:54 GMT Received: from z2.cn.oracle.com (/10.182.71.205) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 01 Oct 2019 05:39:53 -0700 From: Zhenzhong Duan To: linux-kernel@vger.kernel.org Cc: vkuznets@redhat.com, linux-hyperv@vger.kernel.org, kvm@vger.kernel.org, Zhenzhong Duan Subject: [PATCH v3 0/4] Add a unified parameter "nopvspin" Date: Mon, 30 Sep 2019 20:44:35 +0800 Message-Id: <1569847479-13201-1-git-send-email-zhenzhong.duan@oracle.com> X-Mailer: git-send-email 1.8.3.1 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9396 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 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-1910010114 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9396 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 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-1910010114 Sender: linux-hyperv-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org There are cases folks want to disable spinlock optimization for debug/test purpose. Xen and hyperv already have parameters "xen_nopvspin" and "hv_nopvspin" to support that, but kvm doesn't. The first patch adds that feature to KVM guest with "nopvspin". For compatibility reason original parameters "xen_nopvspin" and "hv_nopvspin" are retained and marked obsolete. v3: PATCH2: Fix indentation v2: PATCH1: pick the print code change into separate PATCH2, updated patch description [Vitaly Kuznetsov] PATCH2: new patch with print code change [Vitaly Kuznetsov] PATCH3: add Reviewed-by [Juergen Gross] Thanks Zhenzhong