Re: vhost_net_init returned -7

["Michael S. Tsirkin" <mst@redhat.com>]

On Sat, Aug 29, 2009 at 04:38:25PM -0500, Brian Jackson wrote:
> I'm guessing that's not something the windows virtio drivers support  
> yet. Do you plan on adding support for guests without msi or am I stuck 
> waiting for the windows drivers to add support for msi?
>

I do want to support non-MSI. Host kernel KVM will have to be extended
for this, though.

>
> On Aug 29, 2009, at 4:01 PM, "Michael S. Tsirkin" <mst@redhat.com>  
> wrote:
>
>> On Fri, Aug 28, 2009 at 03:10:43PM -0500, Brian Jackson wrote:
>>> I'm trying to tinker with vhost_net. I have a 2.6.31-rc4 host kernel 
>>> patched
>>> to support vhost_net (v5) (along with ksm if it matters). The guest  
>>> is a
>>> debian-5.0.2 (2.6.26) install CD for now. When the guest tries to  
>>> load the
>>> virtio-net drivers, kvm closes and prints "vhost_net_init returned  
>>> -7". KVM is
>>> patched with your patches from 20090817.
>>>
>>> I tried looking through the code but without adding some other debug 
>>> code,
>>> it's not obvious where exactly it's failing. Was going to see if  
>>> anyone (I
>>> know, not a lot of users yet) had any ideas before I dig too deep.
>>>
>>> --Iggy
>>
>> Something I forgot to mention is that userspace I posted currently  
>> rely on
>> guest MSI support which requires guest v2.6.31 (any rc will do). You  
>> don't need
>> kvm.git in guest though: kernel.org kernels should work ok.
>>
>> -- 
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