Re: [RFC PATCH 00/17] virtual-bus

Andi Kleen wrote:

On Wed, Apr 01, 2009 at 10:19:49AM -0400, Gregory Haskins wrote:
  

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But surely you must have some specific use case in mind? Something
that it does better than the various methods that are available
today. Or rather there must be some problem you're trying
to solve. I'm just not sure what that problem exactly is.
  
      

Performance.  We are trying to create a high performance IO infrastructure.
    

Ok. So the goal is to bypass user space qemu completely for better
performance. Can you please put this into the initial patch
description?
  

FWIW, there's nothing that prevents in-kernel back ends with virtio so 
vbus certainly isn't required for in-kernel backends.

That said, I don't think we're bound today by the fact that we're in 
userspace.  Rather we're bound by the interfaces we have between the 
host kernel and userspace to generate IO.  I'd rather fix those 
interfaces than put more stuff in the kernel.

Regards,

Anthony Liguori