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[Xen-devel] i915 gfx-passthru pci-detach oops

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] i915 gfx-passthru pci-detach oops
From: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
Date: Fri, 23 Jul 2010 13:32:16 -0400
Delivery-date: Fri, 23 Jul 2010 10:33:35 -0700
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I have been testing graphics passthru using xen-4.1-unstable on an i915
chipset, and have a null dereference within the xenfront PCI driver code
(backtrace in attached guest-dmesg). This oops is in response to the
following xm commands executed on the host:

# xm pci-detach fc13-64 0:00:02.1
# xm pci-detach fc13-64 0:00:02.0
Error: Timed out waiting for device model action
Usage: xm pci-detach <Domain> <domain:bus:slot.func>

This will also happen if 0:00:02.1 is not removed. I'm available to test
patches or provide additional debugging information if that would be useful.

-- 

Daniel De Graaf
National Security Agency

Attachment: guest-dmesg
Description: Text document

Attachment: xen-serial
Description: Text document

Attachment: host-dmesg
Description: Text document

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