linux-kernel - Re: [PATCH 03/10] iommu/core: Add bus_type parameter to iommu_domain

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Message-ID: <20110912123725.GB11701@amd.com>
Date:	Mon, 12 Sep 2011 14:37:25 +0200
From:	"Roedel, Joerg" <Joerg.Roedel@....com>
To:	Sethi Varun-B16395 <B16395@...escale.com>
CC:	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Alex Williamson <alex.williamson@...hat.com>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	David Woodhouse <dwmw2@...radead.org>,
	David Brown <davidb@...eaurora.org>,
	"joro@...tes.org" <joro@...tes.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/10] iommu/core: Add bus_type parameter to
 iommu_domain_alloc

On Mon, Sep 12, 2011 at 07:50:35AM -0400, Sethi Varun-B16395 wrote:
> > -	kvm->arch.iommu_domain = iommu_domain_alloc();
> > +	kvm->arch.iommu_domain = iommu_domain_alloc(&pci_bus_type);
> 
> Although it might require changes starting all the way from the qemu interface, but
> it would certainly be nice if this could be made more extendable/generic in terms
> of the bus_type usage. This interface would be used by us (Freescale )for direct
> assignment of SOC devices sitting on the platform bus.

Yeah, you are right on this one. Alex is working on a better and more
generic solution for kvm device passthrough (vfio). This patch only
changes the existing code which is pci-only, though.

	Joerg

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