[OLPC-devel] Re: [RFC][PATCH 1/2] ACPI: Idle Processor PM Improvements

[Alan Cox]

Ar Gwe, 2006-09-01 am 23:52 +0200, ysgrifennodd Andi Kleen:
> What are these gaping holes? SATA seems to work at least on many
> drivers with an out of tree patch (that will hopefully be merged soon)

SATA ought to be pretty good now. 

> And IDE mostly works too except for HPA on thinkpads (which can be
> disabled in the BIOS). While certainly not perfect it doesn't seem
> that bad to me.

IDE also fails for various chipsets where PLLs need a recalibration or
setup needs redoing, and some users report things like floating IRQ 14
hangs on suspend or resume.

HPA now has a -mm proposed patch.

Alan