diff --git a/dlls/kernelbase/tests/process.c b/dlls/kernelbase/tests/process.c
index e5185a2587d..7c6544f6dd9 100644
--- a/dlls/kernelbase/tests/process.c
+++ b/dlls/kernelbase/tests/process.c
@@ -41,6 +41,7 @@ static PVOID (WINAPI *pVirtualAllocFromApp)(PVOID, SIZE_T, DWORD, DWORD);
 static HANDLE (WINAPI *pOpenFileMappingFromApp)( ULONG, BOOL, LPCWSTR);
 static HANDLE (WINAPI *pCreateFileMappingFromApp)(HANDLE, PSECURITY_ATTRIBUTES, ULONG, ULONG64, PCWSTR);
 static LPVOID (WINAPI *pMapViewOfFileFromApp)(HANDLE, ULONG, ULONG64, SIZE_T);
+static BOOL (WINAPI *pUnmapViewOfFile2)(HANDLE, void *, ULONG);
 
 static void test_CompareObjectHandles(void)
 {
@@ -166,6 +167,13 @@ static void test_VirtualAlloc2(void)
     ret = VirtualFree(addr, 0, MEM_RELEASE);
     ok(ret, "Unexpected return value %d, error %lu.\n", ret, GetLastError());
 
+    placeholder1 = pVirtualAlloc2(NULL, NULL, 2 * size, MEM_RESERVE, PAGE_NOACCESS, NULL, 0);
+    ok(!!placeholder1, "Failed to create a placeholder range.\n");
+    ret = VirtualFree(placeholder1, size, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER);
+    ok(!ret && GetLastError() == ERROR_INVALID_ADDRESS, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ret = VirtualFree(placeholder1, 0, MEM_RELEASE);
+    ok(ret, "Unexpected return value %d, error %lu.\n", ret, GetLastError());
+
     /* Placeholder splitting functionality */
     placeholder1 = pVirtualAlloc2(NULL, NULL, 2 * size, MEM_RESERVE_PLACEHOLDER | MEM_RESERVE, PAGE_NOACCESS, NULL, 0);
     ok(!!placeholder1, "Failed to create a placeholder range.\n");
@@ -198,11 +206,20 @@ static void test_VirtualAlloc2(void)
     section = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, size, NULL);
     ok(!!section, "Failed to create a section.\n");
 
-    view1 = pMapViewOfFile3(section, NULL, placeholder1, 0, size, MEM_REPLACE_PLACEHOLDER, PAGE_READWRITE, NULL, 0);
+    view1 = pMapViewOfFile3(section, NULL, NULL, 0, size, 0, PAGE_READWRITE, NULL, 0);
     ok(!!view1, "Failed to map a section.\n");
+    ret = VirtualFree( view1, size, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER );
+    ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_PRESERVE_PLACEHOLDER);
+    todo_wine ok(!ret && GetLastError() == ERROR_INVALID_ADDRESS, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, 0);
+    todo_wine ok(ret, "Got error %lu.\n", GetLastError());
+
+    view1 = pMapViewOfFile3(section, NULL, placeholder1, 0, size, MEM_REPLACE_PLACEHOLDER, PAGE_READWRITE, NULL, 0);
+    ok(view1 == placeholder1, "Address does not match.\n");
 
     view2 = pMapViewOfFile3(section, NULL, placeholder2, 0, size, MEM_REPLACE_PLACEHOLDER, PAGE_READWRITE, NULL, 0);
-    ok(!!view2, "Failed to map a section.\n");
+    ok(view2 == placeholder2, "Address does not match.\n");
 
     memset(&info, 0, sizeof(info));
     VirtualQuery(placeholder1, &info, sizeof(info));
@@ -218,8 +235,47 @@ static void test_VirtualAlloc2(void)
     ok(info.Type == MEM_MAPPED, "Unexpected type %#lx.\n", info.Type);
     ok(info.RegionSize == size, "Unexpected size.\n");
 
+    ret = pUnmapViewOfFile2(NULL, view1, MEM_PRESERVE_PLACEHOLDER);
+    ok(!ret && GetLastError() == ERROR_INVALID_HANDLE, "Got error %lu.\n", GetLastError());
+
+    ret = VirtualFree( placeholder1, size, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER );
+    ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
+
+    ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER);
+    todo_wine ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_PRESERVE_PLACEHOLDER);
+    todo_wine ok(ret, "Got error %lu.\n", GetLastError());
+
+    memset(&info, 0, sizeof(info));
+    VirtualQuery(placeholder1, &info, sizeof(info));
+    todo_wine ok(info.AllocationProtect == PAGE_NOACCESS, "Unexpected protection %#lx.\n", info.AllocationProtect);
+    todo_wine ok(info.State == MEM_RESERVE, "Unexpected state %#lx.\n", info.State);
+    todo_wine ok(info.Type == MEM_PRIVATE, "Unexpected type %#lx.\n", info.Type);
+    ok(info.RegionSize == size, "Unexpected size.\n");
+
+    ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_PRESERVE_PLACEHOLDER);
+    ok(!ret && GetLastError() == ERROR_INVALID_ADDRESS, "Got error %lu.\n", GetLastError());
+
+    ret = UnmapViewOfFile(view1);
+    ok(!ret && GetLastError() == ERROR_INVALID_ADDRESS, "Got error %lu.\n", GetLastError());
+
+    view1 = pMapViewOfFile3(section, NULL, placeholder1, 0, size, MEM_REPLACE_PLACEHOLDER, PAGE_READWRITE, NULL, 0);
+    todo_wine ok(view1 == placeholder1, "Address does not match.\n");
     CloseHandle(section);
-    UnmapViewOfFile(view1);
+
+    ret = VirtualFree( view1, size, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER );
+    ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
+
+    ret = pUnmapViewOfFile2(GetCurrentProcess(), view1, MEM_UNMAP_WITH_TRANSIENT_BOOST | MEM_PRESERVE_PLACEHOLDER);
+    todo_wine ok(ret, "Got error %lu.\n", GetLastError());
+
+    ret = VirtualFree( placeholder1, size, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER );
+    ok(!ret && GetLastError() == ERROR_INVALID_ADDRESS, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ret = VirtualFreeEx(GetCurrentProcess(), placeholder1, size, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER );
+    ok(!ret && GetLastError() == ERROR_INVALID_ADDRESS, "Got ret %d, error %lu.\n", ret, GetLastError());
+    ret = VirtualFree(placeholder1, 0, MEM_RELEASE);
+    todo_wine ok(ret, "Got error %lu.\n", GetLastError());
+
     UnmapViewOfFile(view2);
 
     VirtualFree(placeholder1, 0, MEM_RELEASE);
@@ -249,6 +305,8 @@ static void test_VirtualAlloc2(void)
 
     p1 = p;
     p2 = p + size / 2;
+    ret = VirtualFree(p1, 0, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER);
+    ok(!ret && GetLastError() == ERROR_INVALID_PARAMETER, "Got ret %d, error %lu.\n", ret, GetLastError());
     ret = VirtualFree(p1, size / 2, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER);
     ok(ret, "Failed to split a placeholder.\n");
     check_region_size(p1, size / 2);
@@ -461,6 +519,7 @@ static void init_funcs(void)
     X(VirtualAlloc2);
     X(VirtualAlloc2FromApp);
     X(VirtualAllocFromApp);
+    X(UnmapViewOfFile2);
 
     hmod = GetModuleHandleA("ntdll.dll");
 
diff --git a/include/winnt.h b/include/winnt.h
index 1a7f65776a7..0117100a921 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -837,6 +837,7 @@ typedef struct DECLSPEC_ALIGN(8) MEM_EXTENDED_PARAMETER {
 #define MEM_PRESERVE_PLACEHOLDER  0x00000002
 #define MEM_DECOMMIT              0x00004000
 #define MEM_RELEASE               0x00008000
+#define MEM_UNMAP_WITH_TRANSIENT_BOOST 0x00000001
 
 #define MEM_FREE                0x00010000
 #define MEM_PRIVATE             0x00020000