Received: by 2002:ac0:a5a6:0:0:0:0:0 with SMTP id m35-v6csp459655imm; Thu, 13 Sep 2018 02:38:40 -0700 (PDT) X-Google-Smtp-Source: ANB0VdbVtPucEyiOrQt+IcIlj85J5dmVuhkTSpMzb7P6PMV3hh7mqG1SLf58UO9OX6djOxID+c6+ X-Received: by 2002:a17:902:a9ca:: with SMTP id b10-v6mr6331395plr.198.1536831520722; Thu, 13 Sep 2018 02:38:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1536831520; cv=none; d=google.com; s=arc-20160816; b=mAp4ELxv52avoWsgOcmoVFSQQRtiQHyLKkp41fGWBqyLhlofEqpnNFn2xgmETuGJWw U6FVHDXDsBOKxXLsHTQ4jsW+Eey5aEuot1fe1uMi4QemwTou/pdi9gY0I0Gqsj561XLp IVQMjt3A0xxMqb4ARKZT/eJzTrZQjQv9doBcgXxfMzMNy6wr9D5IOUUF3czJC4XGUjy/ TWINgnGj83l8yWKTCmRbD1hUXN434bDPZv8A+gy+IDBxJr8Pr/92F4c3lW2oTzTPC4wE SaCkiKd5CGINemmUJQokKiMejmCzlD2M4Uo0dloIxFm2wzwcsVqpZEmyhEfu3vbh09An LaCQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=yR/Xhkw9Xpu1rKyZotrwvV8V6Ze2p9QKxD/gynr4qBQ=; b=K2GxGKXob7wcC45peskEAS8wOWraoGwqwfgyk/KyznTppI9RiE2K0itN9voqBeFGLD ogzeh4yTSFT+3PI8/URvHNc2ir+SruwBV88Cq3jMtAx8NkICiDkvx6R/BdOBBXzL08KT TJUzDGXTDy+W+v40BR0Y95OVg5lvOrzaVWCAxzrpCRNxGMgFLd2RjxE2PMP59QhJCcV5 7P6GTXorG69Jo5TC+kEsMgC+kvEnQAdRO+jQbUaWk3q6k3tuImY9/2qF0gSv8dpHACcg uRcbEplVFkhDysIAf6Rs9CYd3hNRC1TTv47sQwvXaIIwKLLbXnYaj+rh7mlLhcSyTIAB 2mRw== ARC-Authentication-Results: i=1; mx.google.com; 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=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h3-v6si3486359plb.249.2018.09.13.02.38.25; Thu, 13 Sep 2018 02:38:40 -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; 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=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728024AbeIMOqh (ORCPT + 99 others); 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