From 6b14f311077aa5121ec934c07e54b888a12cb727 Mon Sep 17 00:00:00 2001
From: Aiken Harris <harraiken91@gmail.com>
Date: Sat, 9 May 2026 13:13:30 +0200
Subject: [PATCH] Enable HPET main counter and disable legacy replacement
 during hardware detection

---
 xtoskrnl/hl/x86/timer.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xtoskrnl/hl/x86/timer.cc b/xtoskrnl/hl/x86/timer.cc
index 5c739a8..cb63f6c 100644
--- a/xtoskrnl/hl/x86/timer.cc
+++ b/xtoskrnl/hl/x86/timer.cc
@@ -190,6 +190,9 @@ HL::Timer::DetectHpet(VOID)
         HpetFrequency = 14318180;
     }
 
+    /* Enable the HPET main counter and disable legacy replacement */
+    Hpet->GeneralConfiguration = (Hpet->GeneralConfiguration & ~HPET_CONFIG_LEGACY_REPLACEMENT) | HPET_CONFIG_ENABLE;
+
     /* Return success */
     return STATUS_SUCCESS;
 }