1 files changed, 2 insertions, 0 deletions
diff --git a/mmu.h b/mmu.h
index 3e46f41..9ab581a 100644
--- a/mmu.h
+++ b/mmu.h
@@ -37,6 +37,8 @@
 #define CR0_CD		0x40000000	// Cache Disable
 #define CR0_PG		0x80000000	// Paging
 
+#define CR4_PSE         0x00000010	// Page size extension
+
 #define SEG_KCODE 1  // kernel code
 #define SEG_KDATA 2  // kernel data+stack
 #define SEG_KCPU  3  // kernel per-cpu data