VSYSCALL_ADDR      44 arch/x86/include/asm/fixmap.h #define FIXADDR_TOP	(round_up(VSYSCALL_ADDR + PAGE_SIZE, 1<<PMD_SHIFT) - \
VSYSCALL_ADDR      72 arch/x86/include/asm/fixmap.h 	VSYSCALL_PAGE = (FIXADDR_TOP - VSYSCALL_ADDR) >> PAGE_SHIFT,