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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 E01F6C28CF6 for ; Thu, 26 Jul 2018 19:21:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3FB520673 for ; Thu, 26 Jul 2018 19:21:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3FB520673 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=supermicro.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 S1731570AbeGZUjj (ORCPT ); Thu, 26 Jul 2018 16:39:39 -0400 Received: from mga.supermicro.com ([207.212.57.84]:39512 "EHLO mga.supermicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730533AbeGZUjj (ORCPT ); Thu, 26 Jul 2018 16:39:39 -0400 Received: from pps.filterd (MGA.supermicro.com [127.0.0.1]) by MGA.supermicro.com (8.16.0.22/8.16.0.22) with SMTP id w6QJLN7x025258; Thu, 26 Jul 2018 12:21:23 -0700 Received: from ex2013-mbx1.supermicro.com ([10.2.1.36]) by MGA.supermicro.com with ESMTP id 2kc4esa19c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Thu, 26 Jul 2018 12:21:23 -0700 Received: from [172.16.95.100] (10.2.0.41) by EX2013-MBX1.supermicro.com (10.2.1.36) with Microsoft SMTP Server (TLS) id 15.0.1236.3; Thu, 26 Jul 2018 12:20:26 -0700 Subject: Re: [RFC] x86, tsc: Add kcmdline args for skipping tsc calibration sequences From: patrickg To: "Brown, Len" , "linux-kernel@vger.kernel.org" CC: "mingo@kernel.org" , "Du, Alek" , "arjan@linux.intel.com" , "Tang, Feng" References: <1A7043D5F58CCB44A599DFD55ED4C94849A1AACF@FMSMSX126.amr.corp.intel.com> Message-ID: <94bebaa1-992b-572b-0d24-e08037611358@supermicro.com> Date: Thu, 26 Jul 2018 12:21:22 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.2.0.41] X-ClientProxiedBy: EX2013-CA1.supermicro.com (10.2.1.31) To EX2013-MBX1.supermicro.com (10.2.1.36) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-26_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=589 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807260198 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tsc_khz still zero with production CPU's, so it's reassigning tsc_khz to the cpuid-acquired cpu_khz value.