diff --git a/abis/linux/vm-flags.h b/abis/linux/vm-flags.h
index bbe9f75ccc..6110a72f83 100644
--- a/abis/linux/vm-flags.h
+++ b/abis/linux/vm-flags.h
@@ -14,6 +14,7 @@
 #define MAP_ANON      0x20
 #define MAP_ANONYMOUS 0x20
 #define MAP_NORESERVE 0x4000
+#define MAP_POPULATE  0x8000
 #define MAP_FIXED_NOREPLACE 0x100000
 
 #define MS_ASYNC 0x01
@@ -35,11 +36,14 @@
 #define MADV_WILLNEED 3
 #define MADV_DONTNEED 4
 #define MADV_FREE 8
+#define MADV_DONTFORK 10
+#define MADV_HUGEPAGE 14
 
 #define MREMAP_MAYMOVE 1
 #define MREMAP_FIXED 2
 
 #define MFD_CLOEXEC 1U
 #define MFD_ALLOW_SEALING 2U
+#define MFD_HUGETLB 4U
 
 #endif // _ABIBITS_VM_FLAGS_H