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[Xen-devel] Issue with PCI-passthrough and pvops

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Issue with PCI-passthrough and pvops
From: Dario Faggioli <raistlin@xxxxxxxx>
Date: Mon, 17 Oct 2011 17:36:27 +0200
Delivery-date: Mon, 17 Oct 2011 09:11:39 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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Hi everyone,

I'm trying to setup PCI-passthrough for a network card on a testbox.
With HVM, everything seems to work, while if I try with a pv-guest the
domain crashes!

Here's the thing:
--
# xl pci-list-assignable-devices 
0000:07:00.0
0000:07:00.1

# cat xen/VMs/Debian-squeeze.pv | grep pci=
#   pci=[ '[SSSS:]BB:DD.F[,option1[,option2[...]]]', ... ]
pci=[ '07:00.0' ]

# xl create xen/VMs/Debian-squeeze.pv
Parsing config file xen/VMs/Debian-squeeze.pv
Daemon running with PID 5588

# xl list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0   750    16     r-----    2205.3
Debian-squeeze_pv                            3   128     2     ---sc-      19.8
--

Again, the very same config and PCI device for an HVM domain starts, and
I can see and bring up the NIC.

What am I doing wrong?

Thanks and Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
----------------------------------------------------------------------
Dario Faggioli, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
PhD Candidate, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa  (Italy)

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