On Fri, 2011-05-20 at 14:00 -0500, Scott Wood wrote:

In general we will not have EE soft-disabled or be napping when
these exceptions happen, but still it is not correct.

The guest doorbell exceptions can only be triggered with MSR[GS]=1,
and thus for host kernel nesting purposes are base-level exceptions.

Note that ehpriv and hypercall are triggerable from normal userspace.
I tested that the process gets properly signalled in this case.

Please split the renaming of type->level from the actual functional
patch.

Cheers,
Ben.