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Re: [Xen-users] vga passthrogh on mainboards with broken ivrs tables

  • To: "'David Sutton'" <kantras@xxxxxxxxx>, <xen-users@xxxxxxxxxxxxx>
  • From: "Eric Houby" <ehouby@xxxxxxxxx>
  • Date: Thu, 2 Jan 2014 13:45:12 -0700
  • Delivery-date: Thu, 02 Jan 2014 20:46:31 +0000
  • List-id: Xen user discussion <xen-users.lists.xen.org>
  • Thread-index: AQGZlYK36b84yUdNG3pyEhhUL/BDQANUR2XfAfcYrjgBlgDWHJqluRUQ


Michael & Eric,


On Tue, Dec 24, 2013 at 6:42 AM, Michaael Mair-Keimberger <m.mairkeimberger@xxxxxxxxx> wrote:

Hi Eric,

I still couldn't get it to work. However, since the ivrs_ioapic kernel
parameter didn't do anything (i didn't even got any log messages about
it) i've dug further into this parameter.
Sadly i found out it's not included in xen-4.3.1 and since gentoo
doesn't provide git ebuilds for xen i'll gonna wait until next xen
will be released. xen-4.4 should be release on 21.01.14 - Thats not that
far away and i guess i can wait for it :)

If you want to passthrough your graphic card i suggest you to install a older
version of xen. Personally i have my own xen-4.2.1 ebuild which don't
include XSA-36. That one works perfectly well.
If irvs_ioapic won't help with next xen I'll go back too...



Xen-users mailing list


  Just wanting to check the basics - have you also make sure you've installed the latest BIOS update for your motherboard? Sometimes these updates contain fixes fror issues such as bad table entries. 







Yes, I have the latest BIOS update, F10a, for my GA-990FXA-UD3 ver1.1.  PCI passthrough works fine for USB controllers but when I try to passthrough a secondary VGA card I see crash logs as copied in the attachment.  If you, or any others on the list, have ideas on how to work through this issue I would be very interested in hearing them.










Attachment: passthrough_crash_log.txt
Description: Text document

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