From bf291613a3a48e0c46542d9553728964dc9eb606 Mon Sep 17 00:00:00 2001
From: Aiken Harris <harraiken@noreply.codingworkshop.git>
Date: Sun, 10 Aug 2025 18:07:26 +0200
Subject: [PATCH] Add debug messages to display PML set by bootloader

---
 xtldr/modules/xtos_o/amd64/memory.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/xtldr/modules/xtos_o/amd64/memory.c b/xtldr/modules/xtos_o/amd64/memory.c
index ebc09d6..36d9890 100644
--- a/xtldr/modules/xtos_o/amd64/memory.c
+++ b/xtldr/modules/xtos_o/amd64/memory.c
@@ -212,6 +212,18 @@ XtEnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
         return STATUS_EFI_ABORTED;
     }
 
+    /* Check the configured page map level to set the LA57 state accordingly */
+    if(PageMap->PageMapLevel == 5)
+    {
+        /* Enable Linear Address 57-bit (LA57) extension */
+        XtLdrProtocol->Debug.Print(L"Enabling Linear Address 57-bit (LA57)\n");
+    }
+    else
+    {
+        /* Disable Linear Address 57-bit (LA57) extension */
+        XtLdrProtocol->Debug.Print(L"Disabling Linear Address 57-bit (LA57)\n");
+    }
+
     /* Write PML4 to CR3 */
     ArWriteControlRegister(3, (UINT_PTR)PageMap->PtePointer);