Messages in this thread | | | Date | Thu, 25 Oct 2007 10:08:16 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/3 -v4] x86_64 EFI runtime service support: EFI basic runtime service support |
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Andi Kleen wrote: >> Especially for accessing the real time clock that has a well >> defined hardware interface going through efi an additional >> software emulation layer looks like asking for trouble. > > I agree it's pointless for the hardware clock, but EFI > also offers services to write some data to the CMOS RAM > which could be very useful to save oops data over reboot. > I don't think this can be done safely otherwise > without BIOS cooperation. >
The ability to scurry away even a small amount of data without relying on the disk system is highly desirable. Think next-boot type information.
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