linux-kernel - Re: [PATCH v2] ARM: SMMU: add devices attached to the SMMU to an IOMMU group

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Message-ID: <20131029043240.GE22291@mudshark.cambridge.arm.com>
Date:	Tue, 29 Oct 2013 04:32:41 +0000
From:	Will Deacon <will.deacon@....com>
To:	Alex Williamson <alex.williamson@...hat.com>
Cc:	Antonios Motakis <a.motakis@...tualopensystems.com>,
	Joerg Roedel <joro@...tes.org>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:IOMMU DRIVERS" <iommu@...ts.linux-foundation.org>,
	"tech@...tualopensystems.com" <tech@...tualopensystems.com>,
	"kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
	"moderated list:ARM SMMU DRIVER" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2] ARM: SMMU: add devices attached to the SMMU to an
 IOMMU group

On Mon, Oct 28, 2013 at 04:44:22PM +0000, Alex Williamson wrote:
> On Fri, 2013-10-18 at 17:08 +0200, Antonios Motakis wrote:
> > IOMMU groups are expected by certain users of the IOMMU API,
> > e.g. VFIO. Add new devices found by the SMMU driver to an IOMMU
> > group to satisfy those users.
> > 
> > Changes from v1:
> >  * Added check that dev->archdata.iommu has not been set already by an IOMMU
> >    driver. This way we can also skip checking for an existing IOMMU group.
> > 
> > Signed-off-by: Antonios Motakis <a.motakis@...tualopensystems.com>
> 
> 
> Looks ok to me.
> 
> Acked-by: Alex Williamson <alex.williamson@...hat.com>

Yup, looks fine to me too. I'm travelling until next week, so I'll start
picking things up then.

Cheers,

Will
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