linux-kernel - Re: [PATCH 0/22] Initial AMD IOMMUv2 support

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Message-ID: <20111209144304.GH3952@amd.com>
Date:	Fri, 9 Dec 2011 15:43:04 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Jerome Glisse <j.glisse@...il.com>
CC:	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/22] Initial AMD IOMMUv2 support

On Thu, Dec 08, 2011 at 03:47:39PM -0500, Jerome Glisse wrote:
> On Mon, Dec 05, 2011 at 02:34:15PM +0100, Joerg Roedel wrote:
> > Hi,
> > 
> > here is a patch-set that adds initial support for the AMD IOMMU version
> > 2 to the Linux kernel. The main feature of the new IOMMU version is
> > support for DMA demand-paging and multiple DMA address spaces per
> > device.
> > The patch-set consists of 2 parts. Patches 1-16 implement the hardware
> > access functions to setup and manage the IOMMUv2 functionality of the
> > hardware. Patches 17-22 implement a seperate module which makes use
> > these functions to implement a page-fault handler for devices which can
> > be used by real device drivers.
> 
> What hw/chipset/CPU support this functionality ?

This functionality will be supported in our Trinity APUs and South
Islands GPUs, which will be shipping early next year. Official product
names for these APUs and GPUs have not yet been announced.


	Joerg

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