[openstack-dev] [nova] remove uml code from nova tree
jaypipes at gmail.com
Wed Sep 6 17:41:24 UTC 2017
On 09/06/2017 01:35 PM, Sean Dague wrote:
> As some of the libvirt refactorings have hit recently, especially around
> privsep, one bit of cruft is UML (user mode linux) support. For people
> that do not yet have gray hairs, this was the earliest form of upstream
> "virtualization" that Linux had. Allowed you to run a kernel as a user
> process with a special loop filesystem. It predates Xen. Very early
> virtual host companies used it (and all switched off of it a long time ago).
> It shows up in commit #1 in Nova -
> bf6e6e718cdc7488e2da87b21e258ccc065fe499 - because it was proposed for
> early testing. However, with the gate doing nested qemu, this hasn't
> been used for a very long time.
> I think this classifies as the kind of thing we can straight remove, and
> it will simplify a few things if we do.
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