Re: Hibernation considerations

Jeremy Maitin-Shepard
2007-07-17T20:39:50Z

david@lang.hm writes:

[snip]

> the non-ACPI hibernate behaves very differently, and for some people (and I
> think I am one of them) it will meet their needs better then _any_ of the ACPI
> suspends.

It may have certain differences from the user point of view, but from
the implementation view, it seems that it is nearly exactly the same.
The only differences seem to be:

- rather than shutting down, do whatever is necessary to stick the
system in S4 state.

- make sure ACPI isn't initialized by the "load image" kernel

- rather than "resume from hibernate" ACPI by initializing it normally,
issue the special hibernate-related methods.

Thus, it seems that supporting ACPI S4 will have a very minimal affect
on the hibernate implementation.

--
Jeremy Maitin-Shepard