diff --git a/qemu/target/riscv/pmp.c b/qemu/target/riscv/pmp.c
index 52771042..46bd91a1 100644
--- a/qemu/target/riscv/pmp.c
+++ b/qemu/target/riscv/pmp.c
@@ -28,6 +28,7 @@
 #include "qapi/error.h"
 #include "cpu.h"
 #include "qemu-common.h"
+#include "exec/exec-all.h"
 
 #ifndef CONFIG_USER_ONLY
 
@@ -350,6 +351,9 @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index,
         cfg_val = (val >> 8 * i)  & 0xff;
         pmp_write_cfg(env, (reg_index * 4) + i, cfg_val);
     }
+
+    /* If PMP permission of any addr has been changed, flush TLB pages. */
+    tlb_flush(env_cpu(env));
 }