diff options
Diffstat (limited to 'include/kernel/riscv.h')
| -rw-r--r-- | include/kernel/riscv.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/kernel/riscv.h b/include/kernel/riscv.h index 4b3d323..0c586a9 100644 --- a/include/kernel/riscv.h +++ b/include/kernel/riscv.h @@ -79,6 +79,7 @@ w_sip(uint64 x) // Supervisor Interrupt Enable #define SIE_SEIE (1L << 9) // external #define SIE_STIE (1L << 5) // timer +#define SIE_SSIE (1L << 1) // software static inline uint64 r_sie() { @@ -375,7 +376,8 @@ typedef uint64 *pagetable_t; // 512 PTEs #define PTE_X (1L << 3) #define PTE_U (1L << 4) // user can access - +// COW Flag (PTE bit 8) +#define PTE_COW (1L << 8) #if defined(LAB_MMAP) || defined(LAB_PGTBL) || defined(LAB_COW) #define PTE_LEAF(pte) (((pte) & PTE_R) | ((pte) & PTE_W) | ((pte) & PTE_X)) |