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-rw-r--r--kernel/memlayout.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/memlayout.h b/kernel/memlayout.h
index 74d2fd4..517a69e 100644
--- a/kernel/memlayout.h
+++ b/kernel/memlayout.h
@@ -77,3 +77,5 @@ struct usyscall {
int pid; // Process ID
};
#endif
+
+#define MAX_VM_ADDR (USYSCALL - PGSIZE)