cowtest passed

2025-07-01 20:31:29 +08:00
parent bc8921a77f
commit bef91a3bf0
8 changed files with 161 additions and 47 deletions
--- a/kernel/riscv.h
+++ b/kernel/riscv.h
@@ -362,6 +362,7 @@ 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_COW (1L << 8)

 // shift a physical address to the right place for a PTE.
 #define PA2PTE(pa) ((((uint64)pa) >> 12) << 10)