diff options
| -rw-r--r-- | llvm/include/llvm/Support/Memory.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/include/llvm/Support/Memory.h b/llvm/include/llvm/Support/Memory.h index 6f22dd7080c..c0454223b2f 100644 --- a/llvm/include/llvm/Support/Memory.h +++ b/llvm/include/llvm/Support/Memory.h @@ -57,6 +57,17 @@ namespace sys { MF_WRITE = 0x2000000, MF_EXEC = 0x4000000, MF_RWE_MASK = 0x7000000, + + /// The \p MF_HUGE_HINT flag is used to indicate that the request for + /// a memory block should be satisfied with large pages if possible. + /// This is only a hint and small pages will be used as fallback. + /// + /// The presence or absence of this flag in the returned memory block + /// is (at least currently) *not* a reliable indicator that the memory + /// block will use or will not use large pages. On some systems a request + /// without this flag can be backed by large pages without this flag being + /// set, and on some other systems a request with this flag can fallback + /// to small pages without this flag being cleared. MF_HUGE_HINT = 0x0000001 }; |
