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Date: Fri, 4 Jul 2014 13:05:30 +0200
From: Joerg Roedel <joro@8bytes.org>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
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        Paul Walmsley <pwalmsley@nvidia.com>,
        Rhyland Klein <rklein@nvidia.com>, Allen Martin <amartin@nvidia.com>,
        devicetree@vger.kernel.org, iommu@lists.linux-foundation.org,
        linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [RFC 01/10] iommu: Add IOMMU device registry
Message-ID: <20140704110529.GF13434@8bytes.org>
References: <1403815790-8548-1-git-send-email-thierry.reding@gmail.com>
 <1403815790-8548-2-git-send-email-thierry.reding@gmail.com>
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On Thu, Jun 26, 2014 at 10:49:41PM +0200, Thierry Reding wrote:
> Add an IOMMU device registry for drivers to register with and implement
> a method for users of the IOMMU API to attach to an IOMMU device. This
> allows to support deferred probing and gives the IOMMU API a convenient
> hook to perform early initialization of a device if necessary.

Can you elaborate on why exactly you need this? The IOMMU-API is
designed to hide any details from the user about the available IOMMUs in
the system and which IOMMU handles which device. This looks like it is
going in a completly different direction from that.


	Joerg


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