Re: [Qemu-devel] [Question] about vhost user Interface

[Michael S. Tsirkin]

On Thu, Feb 26, 2015 at 09:30:40AM +0000, Gaohaifeng (A) wrote:
> Hi
> 
>   I want to use pxe to install a guest os whose nic type is vhost user. 
> However
> pxe rom doesn’t support msi-x interrupt, so qemu won’t start vhost net.
> 
> Call relationship:
> 
> virtio_net_vhost_status-> vhost_net_query-> vhost_dev_query->
> virtio_pci_query_guest_notifiers -> msix_enabled
> 
>  
> 
> In my test, I remove the msix check for vhost user interface and successfully
> install the guest os by pxe.
> 
> Is it OK to do like this and will it cause other problems?
> 
>  
> 
> Thanks.
> 
> Haifeng Gao
> 

I think we should fix it.
As a quick hack, you should be able to just use vhostforce.

-- 
MST