FIXADDR_TOP 72 arch/x86/include/asm/fixmap.h VSYSCALL_PAGE = (FIXADDR_TOP - VSYSCALL_ADDR) >> PAGE_SHIFT, FIXADDR_TOP 140 arch/x86/include/asm/fixmap.h #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) FIXADDR_TOP 141 arch/x86/include/asm/fixmap.h #define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE) FIXADDR_TOP 20 include/asm-generic/fixmap.h #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) FIXADDR_TOP 21 include/asm-generic/fixmap.h #define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) FIXADDR_TOP 37 include/asm-generic/fixmap.h BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);