Re: [Xen-devel] Re: Interdomain comms

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 7 May 2005, at 17:15, Ronald G. Minnich wrote:

> this is not in my view germane. We're proposing using 9p as the low 
> level
> interdomain protocol for xen. 9p stands alone from plan 9. Both Eric 
> and I
> have felt for some time that this would work well, and I'm pretty 
> strongly
> convinced that it would work better than what we have now for the 
> various
> devices.
Isn't 9p a file transfer protocol, or is that just one aspect of it? At 
the very lowest level it doesn't appear so different from what we have 
now (multiple oustanding request messages, each with a different tag 
that is echoed in the asynchronous response message); but the next 
level up seems to be defined in terms of walking a hierarchical file 
system, obtaining handles on files, and so on. To me that doesn't sound 
obviously applicable to our inter-driver communications.
 -- Keir


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