Re: [linux-pm] [PATCH 1/3] PCI: Rework default handling of suspendand resume

From: Arjan van de Ven
Date: Sun Dec 07 2008 - 12:17:42 EST

On Sun, 7 Dec 2008 14:39:27 +0100
"Rafael J. Wysocki" <rjw@xxxxxxx> wrote:

> On Sunday, 7 of December 2008, Linus Torvalds wrote:
> >
> > On Sat, 6 Dec 2008, Linus Torvalds wrote:
> > >
> > > And btw, I'm talking suspend, not hibernate.
> Even as far as hibernation is concerned, I wouldn't _expect_ any BIOS
> to do anything like this as long as we use the ACPI facility to enter
> S4.

there are funky scenarios where the BIOS ends up .. not knowing.

you boot your laptop
you then hot-dock your laptop
then you suspend (say S4)

during resume, the bios sees a very different system than it saw before.
I can totally imagine not all of them getting it right, esp if other
OSes would just re-register interrupts
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