Re: [PATCH 1/3 -v4] x86_64 EFI runtime service support: EFI basicruntime service support

[H. Peter Anvin]

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.

	-hpa
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