task2 finished

2025-05-27 15:59:57 +08:00
parent 5292fdc6ac
commit bd21012f73
6 changed files with 70 additions and 4 deletions
--- a/kernel/riscv.h
+++ b/kernel/riscv.h
@@ -375,7 +375,9 @@ typedef uint64 *pagetable_t; // 512 PTEs
 #define PTE_W (1L << 2)
 #define PTE_X (1L << 3)
 #define PTE_U (1L << 4) // user can access
-
+#define PTE_A   (1L << 6) // Accessed bit
+#define PTE_D   (1L << 7) // Dirty bit
+#define PTE_PS  (1L << 7) // Page Size bit in PTE (for 2MB superpages)


 #if defined(LAB_MMAP) || defined(LAB_PGTBL)