Re: [PATCH] x86[-64] PCI domain support

[Jeff Garzik <jeff@garzik.org>]

Muli Ben-Yehuda wrote:
> On Fri, Sep 29, 2006 at 02:31:16AM +0300, Muli Ben-Yehuda wrote:
> > On Thu, Sep 28, 2006 at 07:03:28PM -0400, Jeff Garzik wrote:
> >
> > > hmmmm.  What kernels did you test?
> > mainline as of today + several unrelated Calgary patches I'll post
> > shortly + your PCI domains patch + my Calgary patch. I'll test with
> > iommu=off next.
> >
> > > That should narrow down the problems.  A problem with aic94xx sorta 
> > > sounds like something unrelated.
> > Not necessarily - Calgary is an isolating IOMMU, meaning that if we
> > set up a mapping for aic94xx in the wrong IO space due to a Calgary
> > bug, aic94xx will fall over and die. Usually however this happens a
> > lot sooner. Also, we have code in Calgary to detect when an errant DMA
> > happens and it hasn't triggered in this case.
>
> Ok, turns out it's neither a PCI domains nor Calgary issue, since I
> can reproduce it on mainline with iommu=off. Must be an aic94xx
> issue, I'll send the details to linux-scsi in a bit.

Would you also make sure that Andrew has the necessary bits to keep 
Calgary going under PCI domains?  If it's a patch that sits on top of 
linux-2.6.git + my patch, I can merge it into misc-2.6.git#pciseg (which 
automatically goes into -mm).  Otherwise, make sure -mm has the stack of 
patches necessary.

	Jeff



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