xen: Add macro ROUNDUP

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Keir Fraser <keir@xen.org>
CC: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/include/xen/lib.h b/xen/include/xen/lib.h
index 4768b0e1dc41ff042294ff9dca88edf68f1c902c..5b258fd876529a1e70f33248096e8a3a670c2780 100644 (file)
--- a/xen/include/xen/lib.h
+++ b/xen/include/xen/lib.h
@@ -63,6 +63,8 @@ do {                                                            \
 #define MASK_EXTR(v, m) (((v) & (m)) / ((m) & -(m)))
 #define MASK_INSR(v, m) (((v) * ((m) & -(m))) & (m))
 
+#define ROUNDUP(x, a) (((x) + (a) - 1) & ~((a) - 1))
+
 #define reserve_bootmem(_p,_l) ((void)0)
 
 struct domain;