[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20080525203921.GB18781@elf.ucw.cz>
Date: Sun, 25 May 2008 22:39:21 +0200
From: Pavel Machek <pavel@...e.cz>
To: Patrick <ragamuffin@...acomm.ch>
Cc: linux-kernel@...r.kernel.org
Subject: >3G => iommu => suspend problems -- was Re: SB600 AHCI: Hard Disk
Corruption
Hi!
> > iommu problem? Try it with mem=3G.
>
> YES! :-) How did you know?
Guess how... I hit it myself.
> So how are we going to get this fixed???
Write a patch, submit it? ;-).
Okay, I guess I should do the patch, but I can't test it easily. If
you can do testing/some development, I guess I can try to cook up
something.
(But no, I'm not an IOMMU expert).
> Should the IOMMU be reinitialized after resume? Or should the bios do it
> but doesn't? ** On the m2a-vm, the "GART" seems to be used as iommu,
> so... :-) ???
It is a Linux bug. BIOS could be more helpful, but... this is a Linux
problem.
> I put some kernel message logs here:
> http://zefir.freesitespace.net/dmesg/
> One log without mem=4G will also be there shortly, where you will see
> the messages concerning the iommu (which seems to be unused right
> now).
Yep, they are similar to what I see.
> ???** Seems, the SB600 is not to blame - alas sorry for the subject.
Subject is easy to change ;-).
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists