xen: replace callers of alloc_vm_area()/free_vm_area() with xen_ prefixed one

Don't use alloc_vm_area()/free_vm_area() directly, instead define
xen_alloc_vm_area()/xen_free_vm_area() and use them.

alloc_vm_area()/free_vm_area() are used to allocate/free area which
are for grant table mapping. Xen/x86 grant table is based on virtual
address so that alloc_vm_area()/free_vm_area() are suitable.
On the other hand Xen/ia64 (and Xen/powerpc) grant table is based on
pseudo physical address (guest physical address) so that allocation
should be done differently.
The original version of xenified Linux/IA64 have its own
allocate_vm_area()/free_vm_area() definitions which don't allocate vm area
contradictory to those names.
Now vanilla Linux already has its definitions so that it's impossible
to have IA64 definitions of allocate_vm_area()/free_vm_area().
Instead introduce xen_allocate_vm_area()/xen_free_vm_area() and use them.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/asm-x86/xen/grant_table.h b/include/asm-x86/xen/grant_table.h
new file mode 100644
index 000000000000..2444d4593a3b
--- /dev/null
+++ b/include/asm-x86/xen/grant_table.h
@@ -0,0 +1,7 @@
+#ifndef __XEN_GRANT_TABLE_H
+#define __XEN_GRANT_TABLE_H
+
+#define xen_alloc_vm_area(size) alloc_vm_area(size)
+#define xen_free_vm_area(area)  free_vm_area(area)
+
+#endif /* __XEN_GRANT_TABLE_H */