lkml.org 
[lkml]   [2007]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [ibm-acpi-devel] suspend/hibernation regression between 2.6.19 and 2.6.20 w/ Thinkpad T41
Date
On Wednesday, 8 August 2007 16:48, Henrique de Moraes Holschuh wrote:
> On Wed, 08 Aug 2007, Rafael J. Wysocki wrote:
> > > I wish we loaded the kernel just once, maybe from the boot loader.
> >
> > Well, that's not so easy. That will work for the bare image, but if we want it
> > to be compressed and/or encrypted, then the boot loader will need to
> > contain all of the necessary code.
>
> Doing things right always have an associated cost, or we'd be doing it right
> since day one...
>
> > I may be doable by using a special boot kernel with ACPI disabled and only
> > as many drivers as required to load the image, but that will make it more
> > difficult to set up and to recover from errors.
>
> Better than the walking bomb we have now. When waking from suspend-to-disk,
> we should not overwrite ANY non-kernel data which has ties to external
> systems (the hardware, the firmware). Instead, we should re-init everything
> (re-init hardware to make sure we know in which state it is, re-init
> ourselves, to make sure we match the firmware and hardware state), as if we
> were booting a cold system in the first place.

Yes, we've already had an agreement about that on linux-pm, now the problem is
to implement it and not to break things in the process ...


--
"Premature optimization is the root of all evil." - Donald Knuth
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-08-08 22:19    [W:0.044 / U:1.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site