On August 15, 2019 8:05:30 AM PDT, "Theodore Y. Ts'o" <ty...@mit.edu> wrote:
>On Thu, Aug 15, 2019 at 03:22:45PM +0200, Arnd Bergmann wrote:
>> If 64-bit Windows relies on a working EFI RTC implementation, we
>> decide to leave the driver enabled on 64-bit and only disable it for
>> 32-bit EFI. That way, future distros would no longer have to worry
>> the localtime hack, at least the ones that have dropped support for
>> 32-bit x86 kernels.
>... and who have also dropped support for legacy (non-UEFI) 64-bit
>boot.  Keep in mind that even for distributions which may install with
>UEFI by default, if people have been upgrading from (for example)
>Debian Jessie to Stretch to Buster, they may still be using non-UEFI
>boot.  This might be especially true on small Linode servers (such as,
>for example, the one which is currently running my mail smarthost....)
>                                                  - Ted

There is also the ACPI TAD device, which can be used to expose this through 
ACPI. We might also be able to request that the ACPI information for the RTC be 
augmented with a CMOS timezone location.
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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