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[20090215]
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Xen news: Dom0 with PAE, PCI passthrough, migration
I have
outlined the need for PAE with Xen
in a previous posting.
In the recent past, PAE has become the default in Linux
Xen kernels, and as a result, running Linux on a NetBSD-Dom0
was not possible due to lack of PAE in Dom0. This has changed now,
Manuel Bouyer has added PAE support for NetBSD/Xen's Dom0
support with a XEN3PAE_DOM0 kernel config now.
Manuel's
posting to port-xen
outlines the PAE work for Dom0.
Other work that's underway is PCI passthrought: This feature that
was available with Xen2 on NetBSD was changed in Xen3, and kernel
support for DomUs to access specific devices on a PCI bus is
underway. Currently, NetBSD DomUs need a Linux Dom0 to pass
access to the PCI bus, but this is expected to change soon.
First steps to pass single PCI devices from a NetBSD Dom0
to a DomU are made, and we can look forward for more of this to
come. Again, see
posting to port-xen
for more details.
The last item is just a quick heads-up in reply to Manuel's posting:
Jean-Yges Migeon is currently working to get saving and restoring
of DomUs as well as the associated migration of domains between
several Dom0s -- i.e. to move a running DomU from one machine to
another -- working.
[Tags: pae, xen]
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