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

[Xen-devel] AMD IOMMU disabled - No Perdev Intremap

  • To: xen-devel@xxxxxxxxxxxxx
  • From: Ferdinand Nölscher <ferdinand@xxxxxxxxxxx>
  • Date: Sun, 6 Oct 2013 13:36:33 +0200
  • Delivery-date: Sun, 06 Oct 2013 11:37:31 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>


From other people posting to this list, I know that there has been a
bug related to the issue described in Xen Security Advisory 36 that
disables iommu for some AMD users like me.

However, even when passing "iommu=no-amd-iommu-perdev-intremap" it
still disables i/o virtualisatoin. Related Xen dmesg output:

(XEN) IVHD Error: Invalid IO-APIC 0
(XEN) AMD-Vi: Error initialization
(XEN) I/O virtualisation disabled

Is there _any_ way I can fix this to make IOMMU work again? Updating
my BIOS had no effect.

I'm using Xen 4.4 unstable from the official git. Any help is greatly

kind regards,
F. Nölscher

Xen-devel mailing list



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