From 54b9b41e84e6642515a5a803d5930bbd9825b505 Mon Sep 17 00:00:00 2001
From: Serge Gautherie <32623169+SergeGautherie@users.noreply.github.com>
Date: Mon, 6 Oct 2025 23:28:39 +0200
Subject: [PATCH] [NTDLL][WINE][NTOS:MM] MmFlushVirtualMemory(): Pretend
 success (#8290)

* [NTDLL][WINE] Fix *FlushVirtualMemory() parameter types
* [NTOS:MM] MmFlushVirtualMemory(): Pretend success

Yet, set IoStatusBlock's actual data.
Based on Jira hack patch by KRosUser.
Addendum to b445005c70 (0.4.15-dev-2306).
CORE-19589
---
 dll/ntdll/def/ntdll.spec    | 4 ++--
 ntoskrnl/mm/ARM3/virtual.c  | 7 ++++++-
 sdk/include/wine/winternl.h | 4 ++++
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/dll/ntdll/def/ntdll.spec b/dll/ntdll/def/ntdll.spec
index 00b45a76973..da3c2df3f7c 100644
--- a/dll/ntdll/def/ntdll.spec
+++ b/dll/ntdll/def/ntdll.spec
@@ -330,7 +330,7 @@
 @ stdcall NtFlushInstructionCache(long ptr long)
 @ stdcall NtFlushKey(long)
 @ stdcall -stub -version=0x600+ NtFlushProcessWriteBuffers()
-@ stdcall NtFlushVirtualMemory(long ptr ptr long)
+@ stdcall NtFlushVirtualMemory(ptr ptr ptr ptr)
 @ stdcall NtFlushWriteBuffer()
 @ stdcall NtFreeUserPhysicalPages(ptr ptr ptr)
 @ stdcall NtFreeVirtualMemory(long ptr ptr long)
@@ -1493,7 +1493,7 @@
 @ stdcall ZwFlushInstructionCache(long ptr long)
 @ stdcall ZwFlushKey(long)
 @ stdcall -stub -version=0x600+ ZwFlushProcessWriteBuffers()
-@ stdcall ZwFlushVirtualMemory(long ptr ptr long)
+@ stdcall ZwFlushVirtualMemory(ptr ptr ptr ptr)
 @ stdcall ZwFlushWriteBuffer()
 @ stdcall ZwFreeUserPhysicalPages(ptr ptr ptr)
 @ stdcall ZwFreeVirtualMemory(long ptr ptr long)
diff --git a/ntoskrnl/mm/ARM3/virtual.c b/ntoskrnl/mm/ARM3/virtual.c
index 719ea65b6d3..ac99dc12420 100644
--- a/ntoskrnl/mm/ARM3/virtual.c
+++ b/ntoskrnl/mm/ARM3/virtual.c
@@ -1348,7 +1348,12 @@ MmFlushVirtualMemory(IN PEPROCESS Process,
 
     UNIMPLEMENTED;
 
-    return STATUS_NOT_IMPLEMENTED;
+    // Report actual state.
+    IoStatusBlock->Status = STATUS_NOT_IMPLEMENTED;
+    IoStatusBlock->Information = 0;
+
+    // Pretend success.
+    return STATUS_SUCCESS; // STATUS_NOT_IMPLEMENTED
 }
 
 ULONG
diff --git a/sdk/include/wine/winternl.h b/sdk/include/wine/winternl.h
index eb42bfb968a..1cc7cce169b 100644
--- a/sdk/include/wine/winternl.h
+++ b/sdk/include/wine/winternl.h
@@ -4645,7 +4645,11 @@ NTSYSAPI NTSTATUS  WINAPI NtFlushBuffersFileEx(HANDLE,ULONG,void*,ULONG,IO_STATU
 NTSYSAPI NTSTATUS  WINAPI NtFlushInstructionCache(HANDLE,LPCVOID,SIZE_T);
 NTSYSAPI NTSTATUS  WINAPI NtFlushKey(HANDLE);
 NTSYSAPI NTSTATUS  WINAPI NtFlushProcessWriteBuffers(void);
+#ifndef __REACTOS__
 NTSYSAPI NTSTATUS  WINAPI NtFlushVirtualMemory(HANDLE,LPCVOID*,SIZE_T*,ULONG);
+#else
+NTSYSAPI NTSTATUS  WINAPI NtFlushVirtualMemory(HANDLE,LPCVOID*,SIZE_T*,IO_STATUS_BLOCK*);
+#endif
 NTSYSAPI NTSTATUS  WINAPI NtFlushWriteBuffer(VOID);
 NTSYSAPI NTSTATUS  WINAPI NtFreeVirtualMemory(HANDLE,PVOID*,SIZE_T*,ULONG);
 NTSYSAPI NTSTATUS  WINAPI NtFsControlFile(HANDLE,HANDLE,PIO_APC_ROUTINE,PVOID,PIO_STATUS_BLOCK,ULONG,PVOID,ULONG,PVOID,ULONG);