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

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Message-ID: <451B99C5.7080809@garzik.org>
Date:	Thu, 28 Sep 2006 05:45:41 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Muli Ben-Yehuda <muli@...ibm.com>
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>
Subject: Re: [PATCH] x86[-64] PCI domain support

Muli Ben-Yehuda wrote:
> On Tue, Sep 26, 2006 at 03:15:08PM -0400, Jeff Garzik wrote:
>> The x86[-64] PCI domain effort needs to be restarted, because we've got
>> machines out in the field that need this in order for some devices to
>> work.
>>
> This breaks the Calgary IOMMU, since it uses sysdata for other
> purposes (going back from a bus to its IO address space). I'm looking
> into it.

You'll need to modify struct pci_sysdata in 
include/asm-{i386,x86_64}/pci.h to include the data that you previously 
stored directly into the sysdata pointer.

	Jeff



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