From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754046Ab3LTEWx (ORCPT ); Thu, 19 Dec 2013 23:22:53 -0500 Received: from terminus.zytor.com ([198.137.202.10]:39411 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752682Ab3LTEWv (ORCPT ); Thu, 19 Dec 2013 23:22:51 -0500 Message-ID: <52B3C5F0.1060303@zytor.com> Date: Thu, 19 Dec 2013 20:22:08 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: joeyli CC: "Rafael J. Wysocki" , Alessandro Zummo , Matt Fleming , Matthew Garrett , Elliott@hp.com, samer.el-haj-mahmoud@hp.com, Oliver Neukum , werner@suse.com, trenn@suse.de, JBeulich@suse.com, linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com, x86@kernel.org, "linux-efi@vger.kernel.org" , linux-acpi@vger.kernel.org, Borislav Petkov Subject: Re: [RFC PATCH 00/14] Support timezone of ACPI TAD and EFI TIME References: <1387439053-8711-1-git-send-email-jlee@suse.com> <52B309EB.90300@zytor.com> <1387512357.3539.4317.camel@linux-s257.site> In-Reply-To: <1387512357.3539.4317.camel@linux-s257.site> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/19/2013 08:05 PM, joeyli wrote: > > Then that means the priority of PNP0B0x is higher then "CMOS RTC Not > Present" flag. ACPI spec doesn't have clear definition on this. > According to the Microsoft requirements documents, such a platform is broken and shouldn't exist. > I look forward to Borislav's "EFI runtime mapping" to fix the physical > address accessing issue of EFI time service on x86_64 machines. I tested > his patches on a issue machine and it works for walk around BIOS bug. > > Can we use EFI time services on x86_64 after Borislav's patches accepted > to mainline? > No. -hpa