Re: 2.6.29: can't resume from suspend with DMAR (intel iommu) enabled

From: Kyle McMartin
Date: Sat Apr 11 2009 - 10:39:59 EST


On Fri, Apr 10, 2009 at 11:04:12PM -0700, David Woodhouse wrote:
> On Tue, 2009-04-07 at 08:56 +0100, Matthew Garrett wrote:
> > On Mon, Apr 06, 2009 at 01:56:01PM -0700, David Woodhouse wrote:
> >
> > > Dirk reported the same panic, but we've just turned his iommu back on
> > > and completely failed to reproduce the problem -- so I'm kind of stuck.
> >
> > I saw this on a T400, but only on the first boot after enabling DMAR -
> > power cycling "fixed" it.
>
> OK, that should be fixed (amongst other things) in
> git.infradead.org/users/dwmw2/iommu-suspend-2.6.29.git and in the Fedora
> 2.6.29.1-68.fc11 kernel. Thanks.
>
> http://www.kerneloops.org/raw.php?rawid=346794
>

Does this include backporting the interrupt remapping fixes, or just
ignoring it since none of the current laptop chipsets support it?

regards, Kyle
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