tree 8b3704eabad3de3ec8c55b55e81a80c2d7fec75c
parent da0ac27213d6f8f7d6ca918031572eaf7f14dca3
author Isaku Yamahata <yamahata@valinux.co.jp> 1224209866 +0900
committer Tony Luck <tony.luck@intel.com> 1224262413 -0700

ia64/xen: introduce sync bitops which is necessary for ia64/xen support.

define sync bitops which is necessary for ia64/xen.
This bit operation is used to communicate with VMM or other guest kernel
Even when this kernel is built for UP, VMM might be SMP so that those operation
must always use atomic operation.

Cc: Robin Holt <holt@sgi.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>