From d1a417de97574fd12528a7f041360aa7b4c84eba Mon Sep 17 00:00:00 2001
From: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
Date: Mon, 5 May 2025 15:34:54 -0700
Subject: [PATCH] Add error logging when MapViewOfFileNuma2 fails

Signed-off-by: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
---
 .../src/hypervisor/surrogate_process_manager.rs              | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/hyperlight_host/src/hypervisor/surrogate_process_manager.rs b/src/hyperlight_host/src/hypervisor/surrogate_process_manager.rs
index 4f3291034..7455148a4 100644
--- a/src/hyperlight_host/src/hypervisor/surrogate_process_manager.rs
+++ b/src/hyperlight_host/src/hypervisor/surrogate_process_manager.rs
@@ -169,8 +169,11 @@ impl SurrogateProcessManager {
         };
 
         if allocated_address.Value.is_null() {
+            // Safety: `MapViewOfFileNuma2` will set the last error code if it fails.
+            let error = unsafe { windows::Win32::Foundation::GetLastError() };
             log_then_return!(
-                "MapViewOfFileNuma2 failed for mem address {:?}",
+                "MapViewOfFileNuma2 failed with error code: {:?} for mem address {:?} ",
+                error,
                 raw_source_address
             );
         }