RE: [Xen-devel] Fail to passthru PCI device to HVM

["Cui, Dexuan" <dexuan.cui@xxxxxxxxx>]

Looks the hypercall XEN_DOMCTL_test_assign_device returns a mistake somehow?

Can you please have a look at xen/arch/x86/domctrl.c: arch_do_domctl() and find 
out in "case XEN_DOMCTL_test_assign_device" what the return value is?

When you see the "Error: failed to assign device...", in "xm dmesg", did you 
notice a message like
"XEN_DOMCTL_test_assign_device:  ... already assigned, or non-existent"?


Thanks,
-- Dexuan



-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Jun Koi
Sent: 2009?9?4? 14:09
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Fail to passthru PCI device to HVM

Hi,

I am trying to passthru a PCI device to HVM. I think that I already
successfully unbind the device in Dom0, by verifying like below:

#xm pci-list-assignable-devices
0000:01:00.0

Then I put a line like below into HVM config file:

pci = ['0000:01:00.0']

But creating the HVM failed, with below error:

"Error: failed to assign device 01:00.0: maybe it has already been
assigned to other domain, or maybe it doesn't exist."

The error message seems misleading, as there is no other VM is running
(only Dom0). So how can I fix this problem?

(I am using -unstable, CS 20145:8fc927798476)

Thanks,
J

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