From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andre Przywara <andre.przywara@amd.com>
Subject: Re: IOMMU and AMD 890fx
Date: Mon, 14 Jun 2010 15:49:37 +0200
Message-ID: <4C163371.7090809@amd.com>
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Cc: Leonardo Prosperi <leo.prosperi@gmail.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Joerg Roedel <joro@8bytes.org>, "Huang2,
	Wei" <Wei.Huang2@amd.com>, Eikelenboom <linux@eikelenboom.it>, Joop Boonen <joop_boonen@web.de>, Andrew Oakley <andrew@ado.is-a-geek.net>
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Jens Krehbiel-Gr=E4ther wrote:
> Hi!
>=20
> I now got a Asus Crosshair IV mainboard and here are the outputs after =
I=20
> enabled the IOMMU option in the bios:
>=20
> xen-01:~# ls /sys/firmware/acpi/tables/
> APIC  DSDT  dynamic  FACP  FACS  HPET  IVRS  MCFG  OEMB  SRAT  SSDT
> xen-01:~# dmesg |grep -i iommu
> [    1.691432] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40
> xen-01:~# lspci -d 1002:5a23
> 00:00.2 Generic system peripheral [0806]: ATI Technologies Inc Device 5=
a23
> xen-01:~#
>=20
> So here is the IOMMU of the 890FX. Will go further for testing now..

Great news, thanks for pursuing that.

For the other boards:
We have identified an issue and are working on a solution. Stay tuned.

Also please note that sometimes board vendors also call the AMD64 GART=20
an IOMMU, so if you have correspondence with them, make sure you are=20
talking about the same thing.

Regards,
Andre.

--=20
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 448 3567 12
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