FIXADDR_TOT_START
unsigned long addr = FIXADDR_TOT_START;
static_assert(FIXADDR_TOT_START > PCI_IO_END);
SPAN_NR_ENTRIES(FIXADDR_TOT_START, FIXADDR_TOP, PMD_SHIFT)
SPAN_NR_ENTRIES(FIXADDR_TOT_START, FIXADDR_TOP, PUD_SHIFT)
(((addr) >> (shift)) - (FIXADDR_TOT_START >> (shift)))
{ FIXADDR_TOT_START, "Fixmap start" },
((FIXADDR_TOT_START - PAGE_SIZE*(CPU_ENTRY_AREA_PAGES+1)) & PMD_MASK)