#ifdef __KERNEL__
+#include <linux/const.h>
+
#if defined(CONFIG_PARISC_PAGE_SIZE_4KB)
# define PAGE_SHIFT 12
#elif defined(CONFIG_PARISC_PAGE_SIZE_16KB)
#else
# error "unknown default kernel page size"
#endif
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))