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Re: [Qemu-devel] Proposed patch: huge RX speedup for hw/e1000.c


From: Stefano Stabellini
Subject: Re: [Qemu-devel] Proposed patch: huge RX speedup for hw/e1000.c
Date: Thu, 31 May 2012 12:43:04 +0100
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)

On Thu, 31 May 2012, Paolo Bonzini wrote:
> Il 31/05/2012 13:06, Stefano Stabellini ha scritto:
> >> > For Xen I think this is not possible at the moment because it doesn't
> >> > implement rx notification.
> >  
> > Why do you say that? Xen supports the iothread and CONFIG_EVENTFD.
> 
> No, it's not that.  I was talking about feature-rx-notify.  But I
> remembered wrong, that feature is advertised by the front-end, not the
> back-end. 

Yes, that's right.


> IIRC there is only one event channel per Xen network device,
> so net_event is the place to add the call to qemu_flush_queued_packets.

I see what you mean and I think that you are correct.

Could you please add that change to your submission?
Or do you want me to send it separately?



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