From: "H. Peter Anvin" <hpa@zytor.com>
To: Borislav Petkov <bp@alien8.de>
Cc: joeyli <jlee@suse.com>, Matt Fleming <matt@console-pimps.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Alessandro Zummo <a.zummo@towertech.it>,
Matthew Garrett <matthew.garrett@nebula.com>,
Elliott@hp.com, samer.el-haj-mahmoud@hp.com,
Oliver Neukum <oneukum@suse.de>,
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-efi@vger.kernel.org>,
linux-acpi@vger.kernel.org, Matt Fleming <matt.fleming@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [RFC PATCH 06/14] rtc-efi: register rtc-efi device when EFI enabled
Date: Fri, 20 Dec 2013 08:48:04 -0800 [thread overview]
Message-ID: <bdf7e604-0aad-4064-ba4c-89f8bb7d82cf@email.android.com> (raw)
In-Reply-To: <20131220103755.GA14784@pd.tnic>
The only real use case for the RTC TZ is compatibility with other operating systems that don't keep the time in UTC, at least as far as I can tell. However, that is a fairly big one, especially in VM deployments.
Borislav Petkov <bp@alien8.de> wrote:
>On Thu, Dec 19, 2013 at 08:30:48PM -0800, H. Peter Anvin wrote:
>> On 12/19/2013 08:24 PM, joeyli wrote:
>> > I agreed, but userspace application should not be too often to
>access
>> > RTC. Maybe only when system boot and set timezone.
>>
>> This is, quite frankly, an idiotic argument.
>
>TBH, I've been struggling with the question too - and it might even be
>a
>stupid question - but what is that absolute need to be able to get the
>TZ in userspace? Why should I care?
>
>Can we get some use cases for stupid people like me please?
>
>Thanks.
--
Sent from my mobile phone. Please pardon brevity and lack of formatting.
next prev parent reply other threads:[~2013-12-20 16:49 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-19 7:51 [RFC PATCH 00/14] Support timezone of ACPI TAD and EFI TIME Lee, Chun-Yi
2013-12-19 7:51 ` [PATCH 01/14] rtc-efi: fix decrease day twice when computing year days Lee, Chun-Yi
2013-12-19 7:51 ` [PATCH 03/14] rtc: block registration of rtc-cmos when CMOS RTC Not Present Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 04/14] ACPI: Add ACPI 5.0 Time and Alarm Device driver Lee, Chun-Yi
2013-12-19 15:22 ` H. Peter Anvin
2013-12-20 5:41 ` joeyli
2014-01-01 0:42 ` H. Peter Anvin
2014-01-06 8:58 ` joeyli
2014-01-07 5:37 ` H. Peter Anvin
2014-01-07 10:40 ` joeyli
2014-01-07 16:35 ` H. Peter Anvin
2014-01-08 14:59 ` joeyli
2014-01-08 17:56 ` H. Peter Anvin
2014-01-09 3:47 ` joeyli
2014-01-09 4:00 ` H. Peter Anvin
2014-01-09 12:16 ` Rafael J. Wysocki
2014-01-02 8:09 ` Lan Tianyu
2014-01-06 9:20 ` joeyli
2013-12-19 7:51 ` [RFC PATCH 05/14] rtc: Add RTC driver of ACPI Time and Alarm Device Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 06/14] rtc-efi: register rtc-efi device when EFI enabled Lee, Chun-Yi
2013-12-19 14:09 ` Matt Fleming
2013-12-20 4:24 ` joeyli
2013-12-20 4:30 ` H. Peter Anvin
2013-12-20 10:37 ` Borislav Petkov
2013-12-20 15:14 ` Matthew Garrett
2013-12-20 21:04 ` H. Peter Anvin
2013-12-21 1:24 ` joeyli
2013-12-21 1:51 ` H. Peter Anvin
2013-12-21 15:34 ` joeyli
2013-12-20 16:48 ` H. Peter Anvin [this message]
2013-12-19 7:51 ` [RFC PATCH 07/14] rtc-efi: add GMTOFF support to rtc_efi Lee, Chun-Yi
2013-12-20 15:11 ` Matthew Garrett
2013-12-21 3:56 ` joeyli
2013-12-19 7:51 ` [RFC PATCH 08/14] rtc-efi: set uie_unsupported for indicate rtc-efi doesn't support UIE mode Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 09/14] efi: move functions of access efi time to header file for sharing Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 10/14] rtc: improve and move week day computing function to rtc header Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 11/14] rtc: switch to get/set rtc time to efi functions if CMOS RTC Not Present git set Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 12/14] efi: adjust system time base on timezone from EFI time services Lee, Chun-Yi
2013-12-19 7:51 ` [RFC PATCH 13/14] Documentation/RTC: add document of ACPI TAD and EFI TIME driver Lee, Chun-Yi
2013-12-19 7:51 ` [TEST PATCH 14/14] acpi: add early parameter to set CMOS RTC Not Present bit for testing Lee, Chun-Yi
[not found] ` <1387448416-11672-1-git-send-email-jlee@suse.com>
2013-12-19 10:49 ` [PATCH 02/14] x86-64/efi: Use EFI to deal with platform wall clock (again) Matt Fleming
2013-12-19 13:32 ` joeyli
2013-12-20 11:29 ` One Thousand Gnomes
2013-12-23 23:25 ` H. Peter Anvin
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