diff --git a/src/kernel/include/memory/firstfit_allocator.hpp b/src/kernel/include/memory/firstfit_allocator.hpp
index 9b5dbc4f..724b4fce 100644
--- a/src/kernel/include/memory/firstfit_allocator.hpp
+++ b/src/kernel/include/memory/firstfit_allocator.hpp
@@ -44,7 +44,7 @@ class FirstFitAllocator : public AllocatorBase {
       klog::Err("addr not aligned. 0x%lX\n", addr);
       throw;
     }
-    printf("%s: 0x%p(0x%X pages) init.\n", name_, addr_, length_);
+    printf("%s: 0x%p(0x%lX pages) init.\n", name_, (void *)addr_, length_);
   }
 
   /// @name 构造/析构函数
diff --git a/src/kernel/virtual_memory_manager.cpp b/src/kernel/virtual_memory_manager.cpp
index cc082ba2..d9f9d1e6 100644
--- a/src/kernel/virtual_memory_manager.cpp
+++ b/src/kernel/virtual_memory_manager.cpp
@@ -26,7 +26,25 @@
 VirtualMemoryManager::VirtualMemoryManager(uint32_t, uint8_t*) {
   // 分配一页用于保存页目录
   pt_t pgd_kernel = (pt_t)AllocKernelPage();
+  auto old_pgd_kernel = GetPageDirectory();
+  // 0x7C02023
+  // 0x530001
+  // memcpy(pgd_kernel, old_pgd_kernel, 1024);
   memset(pgd_kernel, 0, PhysicalMemoryManager::kPageSize);
+  for (auto i = 0; i < 1024; i++) {
+    if (!pgd_kernel[i]) {
+      continue;
+    }
+    klog::Debug("first pgd_kernel[%d]: 0x%X\n", i, pgd_kernel[i]);
+    uint64_t* pte = ((uint64_t*)pgd_kernel[i]);
+
+    for (auto j = 0; j < 1024; j++) {
+      if (!pte[j]) {
+        continue;
+      }
+      klog::Debug("first pte[%d]: 0x%X\n", j, pte[j]);
+    }
+  }
   // 映射内核空间
   for (uint64_t addr = kBasicInfo.GetInstance().kernel_addr;
        addr < kBasicInfo.GetInstance().kernel_addr + kKernelSpaceSize;
@@ -36,6 +54,22 @@ VirtualMemoryManager::VirtualMemoryManager(uint32_t, uint8_t*) {
          cpu::vmm::VMM_PAGE_READABLE | cpu::vmm::VMM_PAGE_WRITABLE |
              cpu::vmm::VMM_PAGE_EXECUTABLE);
   }
+
+  for (auto i = 0; i < 1024; i++) {
+    if (!pgd_kernel[i]) {
+      continue;
+    }
+    klog::Debug("last pgd_kernel[%d]: 0x%X\n", i, pgd_kernel[i]);
+    uint64_t* pte = ((uint64_t*)pgd_kernel[i]);
+
+    for (auto j = 0; j < 1024; j++) {
+      if (!pte[j]) {
+        continue;
+      }
+      klog::Debug("last pte[%d]: 0x%X\n", j, pte[j]);
+    }
+  }
+
   // 设置页目录
   klog::Debug("SetPageDirectory: 0x%X\n", pgd_kernel);
   SetPageDirectory(pgd_kernel);