Re: [Xen-devel] IOMMU and AMD 890fx

[Jens Krehbiel-Gräther <xen@xxxxxxxxxxxxxxxxxx>]

Hi!

I now got a Asus Crosshair IV mainboard and here are the outputs after I 
enabled the IOMMU option in the bios:
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 5a23
xen-01:~#

So here is the IOMMU of the 890FX. Will go further for testing now..


Jens


Am 10.06.2010 21:15, schrieb Andrew Oakley:
> On Thu, 10 Jun 2010 14:12:17 -0500
> Wei Huang<wei.huang2@xxxxxxx>  wrote:
>
> > Hi Andrew,
> >
> > Could you do us a favor by taking a look at chipset options (or
> > something similar)? The IOMMU option might be hidden under that menu.
> > Virtualization is for enabling CPU's SVM feature. So it is unrelated.
> I've been through (all) the BIOS options (again) and I'm sure there are
> no options for the IOMMU.  "Virtualization" does seem to turn on SVM.
>
> > Thanks,
> > -Wei
> >
> > Andrew Oakley wrote:
> > > On Thu, 3 Jun 2010 13:51:05 +0200
> > > Andre Przywara<andre.przywara@xxxxxxx>  wrote:
> > >
> > > > If the ACPI table is missing, you can try to look for the
> > > > corresponding PCI device: it should have a vendor/device-id of
> > > > 1002:5a23, lspci lists it as:
> > > > 00:00.2 Generic system peripheral [0806]: ATI Technologies Inc
> > > > Device 5a23 If anyone has a board with the PCI device but a
> > > > missing ACPI table, please tell us.
> > > >
> > > > We are already trying to improve the situation, you could help us
> > > > by reporting the IOMMU support status on 890FX boards. Simply
> > > > check for the ACPI table:
> > > > # xm dmesg | grep IVRS    or
> > > > $ ls /sys/firmware/acpi/tables/IVRS
> > > > and by checking for the PCI device:
> > > > $ /sbin/lspci -d 1002:5a23
> > > I have a Gigabyte GA-890FXA-UD5 motherboard.  I have opened a
> > > support ticket with Gigabyte but have not yet received any reply.
> > > The virtualization option in the BIOS is turned on, there do not
> > > appear to be any other relevant options.
> > >
> > > $ lspci -d 1002:5a23
> > > $ ls /sys/firmware/acpi/tables/
> > > APIC  DSDT  dynamic  FACP  FACS  HPET  MATS  MCFG  SSDT  TAMG
> > >
> > > If there is any response from Gigabyte to AMD can it be published on
> > > the list please?
> > >
> > > Thanks
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