diff --git a/paw/stos/arch/amd64/cpu/init.c b/paw/stos/arch/amd64/cpu/init.c
index 7c16d45..02ec45e 100644
--- a/paw/stos/arch/amd64/cpu/init.c
+++ b/paw/stos/arch/amd64/cpu/init.c
@@ -7,6 +7,7 @@
  */
 
 #include <hal/kpcr.h>
+#include <hal/intr.h>
 #include <ex/trace.h>
 #include <machine/cpuid.h>
 #include <machine/idt.h>
@@ -122,4 +123,11 @@ HalKpcrP1Init(KPCR *Kpcr)
     MdVectorInit();
     MdIdtLoad();
 
+    /* Default to IRQL_PASSIVE */
+    ASMV(
+        "mov %0, %%cr8"
+        :
+        : "r" ((UQUAD)IRQL_PASSIVE)
+        : "memory"
+    );
 }