From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751260AbaCMEN3 (ORCPT ); Thu, 13 Mar 2014 00:13:29 -0400 Received: from smtp.nue.novell.com ([195.135.221.5]:47882 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750754AbaCMEN2 (ORCPT ); Thu, 13 Mar 2014 00:13:28 -0400 Subject: Re: [RESEND] Fast TSC calibration fails with v3.14-rc1 and later From: joeyli To: "H. Peter Anvin" Cc: Thomas Gleixner , "Rafael J. Wysocki" , Julian Wollrath , x86@kernel.org, LKML , "Rafael J. Wysocki" , John Stultz , "Ted Ts'o" , Linus Torvalds In-Reply-To: <53212D14.1090906@zytor.com> References: <20140310110410.5b2218f6@ilfaris> <1554867.utJVyPuT6A@vostro.rjw.lan> <1394678307.26565.218.camel@linux-s257.site> <532121D2.40805@zytor.com> <1394682954.26565.228.camel@linux-s257.site> <53212D14.1090906@zytor.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 13 Mar 2014 12:12:38 +0800 Message-ID: <1394683958.26565.235.camel@linux-s257.site> Mime-Version: 1.0 X-Mailer: Evolution 2.28.2 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 於 三,2014-03-12 於 20:59 -0700,H. Peter Anvin 提到: > On 03/12/2014 08:55 PM, joeyli wrote: > > > > So do not care "CMOS RTC Not Present", if TAD is present then we use it > > instead of CMOS RTC in all kernel code? or we still can use CMOS RTC? > > > > Why would we use *both*!? How would that possibly make sense? > > -hpa > Yes, it does not make sense for using both. I switched the code in get_rtc_time() set_rtc_time() to TAD when it present, just make sure I'm on the right path. Thanks a lot! Joey Lee