From 12f0df9279c1a4ba6451cd3da029cc2cb19f7456 Mon Sep 17 00:00:00 2001
From: wangxiaoyao <wangxiaoyao@rt-thread.com>
Date: Sat, 25 Feb 2023 19:14:02 +0800
Subject: [PATCH] [libcpu/aarch64] stop when no page is free

---
 libcpu/aarch64/common/mmu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libcpu/aarch64/common/mmu.c b/libcpu/aarch64/common/mmu.c
index 345396e8cf..b97eb1eb6b 100644
--- a/libcpu/aarch64/common/mmu.c
+++ b/libcpu/aarch64/common/mmu.c
@@ -109,6 +109,10 @@ static void _kenrel_unmap_4K(unsigned long *lv0_tbl, void *v_addr)
             }
             rt_pages_free(cur_page, 0);
         }
+        else
+        {
+            break;
+        }
         level--;
     }
 
-- 
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