diff --git a/libc/nt/kernel32/MapViewOfFile3.S b/libc/nt/API-MS-Win-Core-Memory-l1-1-6/MapViewOfFile3.S
similarity index 79%
rename from libc/nt/kernel32/MapViewOfFile3.S
rename to libc/nt/API-MS-Win-Core-Memory-l1-1-6/MapViewOfFile3.S
index 2b242dfd3..059fe827c 100644
--- a/libc/nt/kernel32/MapViewOfFile3.S
+++ b/libc/nt/API-MS-Win-Core-Memory-l1-1-6/MapViewOfFile3.S
@@ -1,5 +1,5 @@
 #include "libc/nt/codegen.h"
-.imp	kernel32,__imp_MapViewOfFile3,MapViewOfFile3
+.imp	API-MS-Win-Core-Memory-l1-1-6,__imp_MapViewOfFile3,MapViewOfFile3
 
 	.text.windows
 	.ftrace1
diff --git a/libc/nt/kernel32/VirtualAlloc2.S b/libc/nt/API-MS-Win-Core-Memory-l1-1-6/VirtualAlloc2.S
similarity index 79%
rename from libc/nt/kernel32/VirtualAlloc2.S
rename to libc/nt/API-MS-Win-Core-Memory-l1-1-6/VirtualAlloc2.S
index 77b2af26c..755aafb20 100644
--- a/libc/nt/kernel32/VirtualAlloc2.S
+++ b/libc/nt/API-MS-Win-Core-Memory-l1-1-6/VirtualAlloc2.S
@@ -1,5 +1,5 @@
 #include "libc/nt/codegen.h"
-.imp	kernel32,__imp_VirtualAlloc2,VirtualAlloc2
+.imp	API-MS-Win-Core-Memory-l1-1-6,__imp_VirtualAlloc2,VirtualAlloc2
 
 	.text.windows
 	.ftrace1
diff --git a/libc/nt/BUILD.mk b/libc/nt/BUILD.mk
index feaa79e24..f6bd28be4 100644
--- a/libc/nt/BUILD.mk
+++ b/libc/nt/BUILD.mk
@@ -158,6 +158,27 @@ $(LIBC_NT_SYNCHRONIZATION_A).pkg:				\
 
 #───────────────────────────────────────────────────────────────────────────────
 
+LIBC_NT_ARTIFACTS += LIBC_NT_MEMORY_A
+LIBC_NT_MEMORY = $(LIBC_NT_MEMORY_A_DEPS) $(LIBC_NT_MEMORY_A)
+LIBC_NT_MEMORY_A = o/$(MODE)/libc/nt/memory.a
+LIBC_NT_MEMORY_A_SRCS := $(wildcard libc/nt/API-MS-Win-Core-Memory-l1-1-6/*.S)
+LIBC_NT_MEMORY_A_OBJS = $(LIBC_NT_MEMORY_A_SRCS:%.S=o/$(MODE)/%.o)
+LIBC_NT_MEMORY_A_CHECKS = $(LIBC_NT_MEMORY_A).pkg
+LIBC_NT_MEMORY_A_DIRECTDEPS = LIBC_NT_KERNEL32
+LIBC_NT_MEMORY_A_DEPS :=				\
+	$(call uniq,$(foreach x,$(LIBC_NT_MEMORY_A_DIRECTDEPS),$($(x))))
+
+$(LIBC_NT_MEMORY_A):					\
+		libc/nt/API-MS-Win-Core-Memory-l1-1-6/	\
+		$(LIBC_NT_MEMORY_A).pkg			\
+		$(LIBC_NT_MEMORY_A_OBJS)
+
+$(LIBC_NT_MEMORY_A).pkg:				\
+		$(LIBC_NT_MEMORY_A_OBJS)		\
+		$(foreach x,$(LIBC_NT_MEMORY_A_DIRECTDEPS),$($(x)_A).pkg)
+
+#───────────────────────────────────────────────────────────────────────────────
+
 LIBC_NT_ARTIFACTS += LIBC_NT_USER32_A
 LIBC_NT_USER32 = $(LIBC_NT_USER32_A_DEPS) $(LIBC_NT_USER32_A)
 LIBC_NT_USER32_A = o/$(MODE)/libc/nt/user32.a
diff --git a/libc/nt/enum/memflags.h b/libc/nt/enum/memflags.h
index fffb09ef9..7d7f11f61 100644
--- a/libc/nt/enum/memflags.h
+++ b/libc/nt/enum/memflags.h
@@ -16,6 +16,7 @@
 #define kNtMemLargePages 0x20000000
 #define kNtMem4mbPages   0x80000000
 
+#define kNtMemReservePlaceholder 0x00040000
 #define kNtMemReplacePlaceholder 0x00004000
 
 #endif /* COSMOPOLITAN_LIBC_NT_ENUM_MEMFLAGS_H_ */
diff --git a/libc/nt/master.sh b/libc/nt/master.sh
index 21a07cdcd..4f44cc057 100755
--- a/libc/nt/master.sh
+++ b/libc/nt/master.sh
@@ -205,7 +205,6 @@ imp	'LoadResource'						LoadResource						kernel32	2
 imp	'LocalFree'						LocalFree						kernel32	1
 imp	'LockFile'						LockFile						kernel32	5
 imp	'LockResource'						LockResource						kernel32	1
-imp	'MapViewOfFile3'					MapViewOfFile3						kernel32	9
 imp	'MoveFile'						MoveFileW						kernel32	2
 imp	'MultiByteToWideChar'					MultiByteToWideChar					kernel32	6
 imp	'OfferVirtualMemory'					OfferVirtualMemory					kernel32	3
@@ -296,7 +295,6 @@ imp	'UnmapViewOfFile2'					UnmapViewOfFile2					kernel32	2
 imp	'UnmapViewOfFileEx'					UnmapViewOfFileEx					kernel32	3
 imp	'UpdateProcThreadAttribute'				UpdateProcThreadAttribute				kernel32	7
 imp	'VirtualAlloc'						VirtualAlloc						kernel32	4
-imp	'VirtualAlloc2'						VirtualAlloc2						kernel32	7
 imp	'VirtualAllocEx'					VirtualAllocEx						kernel32	5
 imp	'VirtualFree'						VirtualFree						kernel32	3
 imp	'VirtualLock'						VirtualLock						kernel32	2
@@ -629,6 +627,12 @@ imp	'WaitOnAddress'						WaitOnAddress						API-MS-Win-Core-Synch-l1-2-0		4
 imp	'WakeByAddressAll'					WakeByAddressAll					API-MS-Win-Core-Synch-l1-2-0		1
 imp	'WakeByAddressSingle'					WakeByAddressSingle					API-MS-Win-Core-Synch-l1-2-0		1
 
+# API-MS-Win-Core-Memory-l1-1-6.dll (Windows 10+)
+#
+#	Name							Actual							DLL					Arity
+imp	'MapViewOfFile3'					MapViewOfFile3						API-MS-Win-Core-Memory-l1-1-6		9
+imp	'VirtualAlloc2'						VirtualAlloc2						API-MS-Win-Core-Memory-l1-1-6		7
+
 # NTDLL.DLL
 # BEYOND THE PALE
 #