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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 41DC0C07520 for ; Thu, 13 Sep 2018 09:38:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F284F206B8 for ; Thu, 13 Sep 2018 09:37:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F284F206B8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728049AbeIMOqh (ORCPT ); Thu, 13 Sep 2018 10:46:37 -0400 Received: from mga01.intel.com ([192.55.52.88]:49361 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726751AbeIMOqg (ORCPT ); Thu, 13 Sep 2018 10:46:36 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Sep 2018 02:37:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,368,1531810800"; d="scan'208";a="90093154" Received: from svm-s2600wft.bj.intel.com ([10.240.193.45]) by orsmga001.jf.intel.com with ESMTP; 13 Sep 2018 02:37:52 -0700 From: Yi Sun To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, chao.p.peng@intel.com, chao.gao@intel.com, isaku.yamahata@intel.com, michael.h.kelly@microsoft.com, tianyu.lan@microsoft.com, Yi Sun , Jonathan Corbet , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger Subject: [PATCH v1 3/3] hv: add description for hv_nopvspin Date: Thu, 13 Sep 2018 17:13:25 +0800 Message-Id: <1536830005-37260-4-git-send-email-yi.y.sun@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1536830005-37260-1-git-send-email-yi.y.sun@linux.intel.com> References: <1536830005-37260-1-git-send-email-yi.y.sun@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hv_nopvspin is a command line parameter used to disable Hyper-V PV spinlock. Cc: Jonathan Corbet Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Stephen Hemminger Signed-off-by: Yi Sun --- Documentation/admin-guide/kernel-parameters.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 64a3bf5..fc761b5 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1385,6 +1385,11 @@ hvc_iucv_allow= [S390] Comma-separated list of z/VM user IDs. If specified, z/VM IUCV HVC accepts connections from listed z/VM user IDs only. + + hv_nopvspin [X86,HYPER_V] + Disables the ticketlock slowpath using HYPER-V PV + optimizations. + keep_bootcon [KNL] Do not unregister boot console at start. This is only useful for debugging when something happens in the window -- 1.9.1