Re: [Xen-devel] Mapping Data between Dom0 and DomU

[Christian Refvik <christian.refvik@xxxxxxxxxx>]

Andrew, Ian, and Paul - thanks so much for the help.  I need to study the code 
and I'll try to get a channel going between two Linux VMs.  Latency and 
performance are critical (~500 MB/s), so I'll probably have more questions 
about best practices for large data buffers.  However, once I have a working 
solution for Linux, I'll work with Paul (and the Windows PV developers) to use 
the current Windows PV interfaces to generate a solution between Windows Server 
2012 and Linux.

Thanks for the help,
Christian

-----Original Message-----
From: Paul Durrant [mailto:Paul.Durrant@xxxxxxxxxx] 
Sent: Thursday, January 8, 2015 2:21 AM
To: Christian Refvik
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx; win-pv-devel@xxxxxxxxxxxxxxxxxxxx; Andrew 
Cooper; Ian Campbell
Subject: RE: [Xen-devel] Mapping Data between Dom0 and DomU

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel- 
> bounces@xxxxxxxxxxxxx] On Behalf Of Ian Campbell
> Sent: 08 January 2015 08:59
> To: Andrew Cooper
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx; win-pv-devel@xxxxxxxxxxxxxxxxxxxx;
> Christian Refvik
> Subject: Re: [Xen-devel] Mapping Data between Dom0 and DomU
> 
> On Thu, 2015-01-08 at 02:01 +0000, Andrew Cooper wrote:
> > A relevant bit of code to look at would be tools/libvchan/ , which 
> > as far as I am aware does pretty much what you describe (but without 
> > the windows support).
> 
> Adding a libvchan front and/or backend driver to the Windows PV 
> drivers would be a very useful contribution to the project IMHO.
> 

A big +1 from me. If you need any assistance then please join the win-pv-devel 
mailing list and we can give you some pointers. There are already Windows 
kernel PV interfaces for many Xen features.

  Cheers,

    Paul

> Ian.
> 
> 
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