Re: Ethernet on Arm true dom0-less

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Mon, 1 Mar 2021, Levenglick Dov wrote:
> Hi all,
> 
> I have true dom0-less up and running on Xilinx ZynqMP UltraScale+ (Arm A53), 
> based on Xen-4.11 - the official version of SDK 2019.1.
> 
> >From what I see, PV is not supported in this configuration. Without writing 
> >proprietary drivers, would Ethernet sharing between Doms be supported - for 
> >example via VNIC?

Hi Dov,

Yes, PV is not supported yet, but there are a couple of workarounds you
can use today.

One workaround is to setup a couple of AXI Ethernet Lite interfaces in
PL connected via a level2 switch (also in PL). Then you can assign each
ethernet interface to a different VM.

Another workaround is to statically share some memory between the two
VMs. Then you can setup your own ring for communication on top.