Stefan Bauer wrote:
> Han, Weidong schrieb:
>> Yes, this output is complete and helpful. I found the problem exists
>> in domain_context_mapping(), which never succeeds. Thus result in
>> other problems. Can you add some printk to locate where it fails?
>
> I will if you advice me how to do where exactly.
I think you can add printk after check of drhd:
if ( !drhd )
+ {
+ printk("%s: can't find drhd for device (bus=%x dev=%x func=%x)\n",
+ __func__, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
return -ENODEV;
+ }
and you also can change XENLOG_INFO to XENLOG_ERR in domain_context_mapping().
>
>> In addition, I suggest you don't add extra graphic card into your
>> machine, as I know it may introduce issues on Q35.
>
> Problem is that i want to use the pci-e card for my hvm guest and the
> onboard one for dom0. it seems that both the onboard and pci-e one
> cant work alongside, so iam forced to add another one.
>
A few months ago, in xen mailing list I remember some guys reported: when
using PEG card (turning off integrated Gfx) on Q35, VT-d cannot work. It's the
bios issue. I suspect it's not fixed yet. So I suggest you to use IGD instead
of PEG.
Regards,
Weidong
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