tree a721776de9157570120057a31de7e271cbe56b28
parent cb85f123cd2393581bcffad335bfc6bcdd58569c
author Daniel De Graaf <dgdegra@tycho.nsa.gov> 1324324514 -0500
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1324418555 -0500

xenbus: Support HVM backends

Add HVM implementations of xenbus_(map,unmap)_ring_v(alloc,free) so
that ring mappings can be done without using GNTMAP_contains_pte which
is not supported on HVM.  This also removes the need to use vmlist_lock
on PV by tracking the allocated xenbus rings.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
[v1: Fix compile error when XENBUS_FRONTEND is defined as module]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>