ONE_GIG
for (off_t off = 0; off < ONE_GIG * 8; off += ONE_GIG) {
int ret = ftruncate(fd, ONE_GIG * 8);
for (off_t off = 0; off < ONE_GIG * 8; off += ONE_GIG) {
if (physmem > (16 * ONE_GIG) / PAGESIZE)
mfn_base = ONE_GIG;
ktext_phys = ONE_GIG; /* from UNIX Mapfile */
ramdisk_start -= ONE_GIG;
ramdisk_end -= ONE_GIG;
va_pfn = mmu_btop(va - ONE_GIG);
fastboot_map_with_size(nk, 0, 0, ONE_GIG, 1);
valloc_base = segkpm_base + P2ROUNDUP(physmem_bytes, ONE_GIG);
#define FOUR_GIG ((uint64_t)4 * ONE_GIG)
mmu_btop(xen_info->pt_base - ONE_GIG));