[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] IOMMU issue on HP DL385g7 servers - workaround_bogus_bios / workaround_bug_bios doesn't help

Wednesday 13 July 2011 16:05:54 Mark Schneider wrote:
> Hello,
> I have cretaed wheezy xen 4.1 debian live image (s. the link below to
> it) but even I tried different boot options like "iommu=1 |
> workaround_bios_bug | workaround_bogus_bios" I am getting such entry
> "(XEN) AMD-Vi: IOMMU not found!" in the log (s. for more details in
> http://www.it-infrastrukturen.com/fileadmin/linux/paste/xm_dmesg.xen41_on_D
>L385g7_NOK.txt )
> link to xen 4.0 (squeeze) and xen 4.1 (wheezy) debian live images -
> http://www.it-infrastrukturen.com/fileadmin/linux/debian-live-xen/README.xe
> do you have any idea how to solve this issue? - thank you in advance for
> any hints (different one than killing the hardware vendor (HP) ;) ...
> for the missing IOMMU BIOS option
> Linux xen41dom0 2.6.39-2-amd64 #1 SMP Wed Jun 8 11:01:04 UTC 2011 x86_64
> GNU/Linux
> Thank you in advance for any hints.
> Regards, Mark

workaround_bios_bug  and workaround_bogus_bios only works for vtd not amd.
You should have IVRS table build by BIOS to enable amd iommu. It could look 
like this:
(XEN) ACPI: IVRS AFE7C1ED, 00C8 (r1  AMD     RD890S  6040000 AMD         0)

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.