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

[Jun Koi <junkoi2004@xxxxxxxxx>]

On Fri, Sep 4, 2009 at 3:41 PM, Cui, Dexuan<dexuan.cui@xxxxxxxxx> wrote:
> 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"?

A quick answer, yes. I have this in xm dmesg:

"(XEN) domctl.c:672:d0 XEN_DOMCTL_test_assign_device: 1:0:0 already
assigned, or non-existent"

So what should I do to track this bug? Looking at
xen/arch/x86/domctrl.c like you said above?


Thanks,
J




> -----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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