linux-kernel - Re: [RFC PATCH 00/14] Support timezone of ACPI TAD and EFI TIME

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Message-ID: <a049daea-a713-4d06-b35f-61f3bec06ba9@email.android.com>
Date:	Fri, 20 Dec 2013 12:29:51 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Matthew Garrett <matthew.garrett@...ula.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"samer.el-haj-mahmoud@...com" <samer.el-haj-mahmoud@...com>,
	"jlee@...e.com" <jlee@...e.com>, "bp@...e.de" <bp@...e.de>,
	"a.zummo@...ertech.it" <a.zummo@...ertech.it>,
	"Elliott@...com" <Elliott@...com>,
	"werner@...e.com" <werner@...e.com>,
	"rtc-linux@...glegroups.com" <rtc-linux@...glegroups.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"oneukum@...e.de" <oneukum@...e.de>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"trenn@...e.de" <trenn@...e.de>,
	"JBeulich@...e.com" <JBeulich@...e.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"matt@...sole-pimps.org" <matt@...sole-pimps.org>
Subject: Re: [RFC PATCH 00/14] Support timezone of ACPI TAD and EFI TIME

Yes, but the TZ isn't all that critical, either.  It certainly doesn't matter at all for a pure Linux system.

Matthew Garrett <matthew.garrett@...ula.com> wrote:
>On Fri, 2013-12-20 at 08:57 -0800, H. Peter Anvin wrote:
>> But we prefer the TAD for that.  The case where the EFI runtime is
>the only source of that info is problematic as they are known to not
>work at runtime.  We could collect it at boot and then never change it,
>although you end up in definitional issues between EFI and the hw RTC.
>
>Most shipping UEFI hardware has no TAD.

-- 
Sent from my mobile phone.  Please pardon brevity and lack of formatting.
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