1 files changed, 1 insertions, 0 deletions
diff --git a/riscv/mmu.h b/riscv/mmu.h
index 9826cf1..c7e047a 100644
--- a/riscv/mmu.h
+++ b/riscv/mmu.h
@@ -17,6 +17,7 @@
 #define PGSHIFT 12
 const reg_t PGSIZE = 1 << PGSHIFT;
 const reg_t PGMASK = ~(PGSIZE-1);
+#define MAX_PADDR_BITS 56 // imposed by Sv39 / Sv48
 
 struct insn_fetch_t
 {