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Re: [Xen-users] Dom0 for FreeBSD or Illumos

On 23/07/14 16:17, Miles Fidelman wrote:
> Roger Pau Monné wrote:
>> I haven't seen any questions regarding this on the FreeBSD-Xen mailing
>> list recently:
>> http://lists.freebsd.org/pipermail/freebsd-xen/2014-July/thread.html
> Odd, I posted something the other day - just looked at the server log,
> and for some reason it bounced.  Guess I don't have so resend at this
> point.
>> I have prototype for a FreeBSD Dom0, it is still in the very early
>> stages, but the code can be found at:
>> http://xenbits.xen.org/gitweb/?p=people/royger/freebsd.git;a=shortlog;h=refs/heads/pvh_dom0_v5.2
>> Setting it up is very convoluted right now, I expect it will be much
>> more easier once the patches are merged and Xen 4.5 is released with
>> support for running Dom0 PVH.
> Does that imply that it might not run pure PV?

Yes, it won't run as pure PV, the FreeBSD port I've been working on is
PVH only. IMHO working on pure PV support now is quite useless, it
performs worse and requires a lot more of code/hacks in the OS, which
makes it hard to maintain in the long run.

That doesn't mean you cannot create pure PV guests from a PVH Dom0,
that's fully supported and working fine.

> One thing I've been wondering is, given the amount of virtualization
> related functionality that's moving into the Linux Kernel, is that
> creating divergence that makes it hard to support other kernels (notably
> BSD* and Illumos?).  It sure would be sweet to see Xen on SmartOS.

Not sure what you mean by that. The interface between the guest OSes and
Xen is not defined by the Linux kernel, it is a public interface defined
by Xen, which is designed to be OS agnostic.


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