91
91
if(p != v && addrspace_free(v, n)) {
92
92
// On some systems, mmap ignores v without
93
93
// MAP_FIXED, so retry if the address space is free.
94
97
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0);