Re: conf/files.xen changes proposal

[Greg Troxel <gdt%ir.bbn.com@localhost>]

I looked at the code.  There's code that seems to implement a hypercall
interface, and it's not adequately commented what the plan is.  There
seem to be two drivers, one for real systems and one for xen, and the
backends are called from xen.  The apply function for amd64 and intel
are both removed in the xen case,

The right fix involves:

  making sure that one can't have UCODE without DOM0OPS (in xen)

  omitting these files when UCODE is not defined

So I think after studying it that removing dom0ops from the files line
is the right thing.  I would like to see the unmodified DOM0 kernel
actually run before committing this, though.