Re: [Xen-devel] [PATCH] [RFC]: xenpaging: add command to to flush qemu buffer cache via VMCALL

[Tim Deegan <tim@xxxxxxx>]

At 07:08 -0800 on 08 Mar (1331190509), Andres Lagar-Cavilla wrote:
> > Righto.  Can you please make sure that whatever you do for new qemu
> > doesn't require xenpaging and qemu to be in the same VM?
> 
> Stub domains: great fun with QMP! Guaranteed or your money back! (insert
> smiley here)

Cc'ing Stefano, who presumably knows about such things.

Stefano, what is the Correct Way to communicate with a new-style qemu in
another domain?  QMP over Xenstore or over libvchan?

> This is a good reason to get inter VM TCP/IP within the same host to
> finally work, without requiring naming other than a domain id. If feasible
> at all.

Doesn't libvchan solve this problem?  (I presume you want a socket-style
interface, rather than actual TCP/IP.)

Tim.

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