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

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Message-ID: <20060928233116.GK22787@rhun.haifa.ibm.com>
Date:	Fri, 29 Sep 2006 02:31:16 +0300
From:	Muli Ben-Yehuda <muli@...ibm.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Andrew Morton <akpm@...l.org>, Greg KH <greg@...ah.com>,
	Jim Paradis <jparadis@...hat.com>, Andi Kleen <ak@...e.de>,
	LKML <linux-kernel@...r.kernel.org>, jdmason@...zu.us
Subject: Re: [PATCH] x86[-64] PCI domain support

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.

Cheers,
Muli
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