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/vm.c
+++ b/kernel/vm.c
@@ -101,6 +101,9 @@ walk(pagetable_t pagetable, uint64 va, int alloc)
  for(int level = 2; level > 0; level--) {
    pte_t *pte = &pagetable[PX(level, va)];
    if(*pte & PTE_V) {
+      if (*pte & PTE_PS) { // 如果是 Superpage
+        return pte;
+      }
      pagetable = (pagetable_t)PTE2PA(*pte);
 #ifdef LAB_PGTBL
      if(PTE_LEAF(*pte)) {