Re: [Xen-devel] Inter domain communication

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2013-05-02 at 09:48 +0100, Khandelwal, Shubham wrote:
> I am using XEN-ARM for Fast Models (VEXPRESS Platform), and am able to
> boot dom0 and domU.  Can anybody suggest some pointers on where to
> start on Inter domain communication, which can  be used for
> transferring some data like files, buffers etc across domains. 

You have a few of options here.

You could setup a virtual network (which could be purely internal to the
host) using PV network devices and use that to share files etc via ssh,
nfs or some other network protocol.

Alternatively you could use libvchan (tools/libvchan in the source) to
create a simple byte stream connection between two domains and layer a
protocol of your own onto that.

You could define your own PV shared ring protocol, and implement it from
scratch but this doesn't really offer many advantages over using
networking or libvchan.

Virtual block devices are likely not what you want, since they don't
really allow for sharing, or at least not shared writes, but they are
available.

Ian.


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