On Tue, 2013-12-10 at 14:54 -0800, H. Peter Anvin wrote:

> Ping on this?

No TAD, yes ACPI declaration for RTC.

> Unless we find evidence to the contrary, we should probably do:
> 
> ACPI TAD > PNP0B0x > EFI > hard probing

EFI is preferable to PNP in that it gives us a timezone, and Windows
certainly calls the EFI time functions. *However*, it doesn't appear to
do so once the system is booted. So we probably want to call it in the
boot stub and find some way to pass the timezone information up to the
kernel, and then spend some more time instrumenting Windows to figure
out how it makes time calls.

-- 
Matthew Garrett <[email protected]>

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