From 430a086f22684ad0020819dc3e7712f36fe9f016 Mon Sep 17 00:00:00 2001
From: Yufeng Li <liyufeng1987@gmail.com>
Date: Sun, 25 Feb 2024 08:50:45 -0800
Subject: [PATCH] fix memory mapping on Windows (#19623)

### Description
<!-- Describe your changes. -->
Windows memory map casts mapped_offset to DWORD directly. It will be
truncated if it is larger than 2^32-1. We need to set high
dwFileOffsetHigh for this case.


### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

The bug was found from #19450
---
 onnxruntime/core/platform/windows/env.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/onnxruntime/core/platform/windows/env.cc b/onnxruntime/core/platform/windows/env.cc
index 0eb34cbfbc9eb..983cc6089bb4c 100644
--- a/onnxruntime/core/platform/windows/env.cc
+++ b/onnxruntime/core/platform/windows/env.cc
@@ -459,8 +459,8 @@ Status WindowsEnv::MapFileIntoMemory(_In_z_ const ORTCHAR_T* file_path,
 
   void* const mapped_base = MapViewOfFile(file_mapping_handle.get(),
                                           FILE_MAP_READ,
-                                          0,
-                                          static_cast<DWORD>(mapped_offset),
+                                          static_cast<DWORD>((mapped_offset >> 32) & 0xFFFFFFFF),
+                                          static_cast<DWORD>(mapped_offset & 0xFFFFFFFF),
                                           mapped_length);
   GSL_SUPPRESS(r.11)
   mapped_memory =