MEM_F_IMMUTABLE
.flags = MEM_F_RW | MEM_F_IMMUTABLE,
.flags = MEM_F_RW | MEM_F_IMMUTABLE,
.flags = MEM_F_RW | MEM_F_IMMUTABLE,
immutable = (mr->flags & MEM_F_IMMUTABLE) != 0;
assert((mr->flags & MEM_F_IMMUTABLE) == 0);
mr.flags = MEM_F_RW | MEM_F_IMMUTABLE;
mr.flags = MEM_F_RW | MEM_F_IMMUTABLE;
iomem.flags = MEM_F_RW | MEM_F_IMMUTABLE;