From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753235AbaCMD5E (ORCPT ); Wed, 12 Mar 2014 23:57:04 -0400 Received: from smtp.nue.novell.com ([195.135.221.5]:41348 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753127AbaCMD4s (ORCPT ); Wed, 12 Mar 2014 23:56:48 -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: <532121D2.40805@zytor.com> References: <20140310110410.5b2218f6@ilfaris> <1554867.utJVyPuT6A@vostro.rjw.lan> <1394678307.26565.218.camel@linux-s257.site> <532121D2.40805@zytor.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 13 Mar 2014 11:55:54 +0800 Message-ID: <1394682954.26565.228.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 20:11 -0700,H. Peter Anvin 提到: > On 03/12/2014 07:38 PM, joeyli wrote: > > > > I sent rtc-acpitad driver for RTC subsystem on last month, I will send > > second version. > > > > For using TAD to set wall clock is because in ACPI 5.0 spec, there have > > a "CMOS RTC Not Present" flag in FADT to indicate OSPM should use TAD > > when this flag set: > > > > CMOS RTC Not Present > > > > Bullsh*t. The TAD should be used if it is present, it has nothing to do > with this flag. > > -hpa > > 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? Regards Joey Lee