cachealign: Fix __VM_CACHELINE_ALIGN

With-Input-from: dillon@

diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
index 8d5e8d7..086a957 100644 (file)
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -76,8 +76,9 @@
  * header, but currently, we do need such a hierarchy.
  */
 #define        __VM_CACHELINE_SIZE     64
+#define __VM_CACHELINE_MASK    (__VM_CACHELINE_SIZE - 1)
 #define        __VM_CACHELINE_ALIGN(n) \
-                       (((n) + __VM_CACHELINE_SIZE - 1) / __VM_CACHELINE_SIZE)
+       (((n) + __VM_CACHELINE_MASK) & ~__VM_CACHELINE_MASK)
 
 /*
  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.