GB
#define MAXB GB /* No tera, peta, nor exa. */
max = MAXB / GB;
mul = GB;
warnx("maximum blocksize is %ldG", MAXB / GB);
#define VM_LOWMEM_LIMIT (3 * GB)
#define VM_HIGHMEM_BASE (4 * GB)
sm->base = 4 * GB;
if (pgsize > 1 * GB) {
#define GB_G33S2H_SUBVENDOR HDA_MODEL_CONSTRUCT(GB, 0xa022)
#define GB_K8_SUBVENDOR HDA_MODEL_CONSTRUCT(GB, 0xa102)
#define GB_BXBT2807_SUBVENDOR HDA_MODEL_CONSTRUCT(GB, 0xfa53)
#define GP_ALL_SUBVENDOR HDA_MODEL_CONSTRUCT(GB, 0xffff)
error = e820_add_entry(4 * GB, 4 * GB + highmem_size,
e820_alloc(4 * GB, length, alignment, type, E820_ALLOCATE_HIGHEST));
#define PCI_EMUL_MEMSIZE64 (32*GB)
if (maxval > 10 * GB) {
div = GB;