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

H. Peter Anvin
2013-12-20T16:57:03Z

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.

Matthew Garrett <matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org> wrote:
>On Thu, 2013-12-19 at 20:22 -0800, H. Peter Anvin wrote:
>> On 12/19/2013 08:05 PM, joeyli wrote:
>> > Can we use EFI time services on x86_64 after Borislav's patches
>accepted
>> > to mainline?
>> >
>>
>> No.
>
>We will want to use them to (at minimum) obtain the clock timezone.
>Using them for general RTC access is less attractive.

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