HelenOS sources

DMAMEM_4GiB        51 uspace/lib/c/include/ddi.h #define DMAMEM_4GiB   ((uintptr_t) UINT64_C(0xffffffff00000000))
DMAMEM_4GiB        51 uspace/lib/posix/include/libc/ddi.h #define DMAMEM_4GiB   ((uintptr_t) UINT64_C(0xffffffff00000000))