_PAGE_GUARDED
#define _PAGE_GUARDED 0x001 /* G: page is guarded from prefetch */
#define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */
#define _PAGE_GUARDED 0x00000100 /* H: G bit */
#define _PAGE_GUARDED 0x0010 /* Copied to L1 G entry in DTLB */
#define _PAGE_GUARDED 0x100000