{"id":394,"date":"2025-11-16T20:05:58","date_gmt":"2025-11-16T12:05:58","guid":{"rendered":"http:\/\/175.178.117.18\/?p=394"},"modified":"2025-11-16T20:06:04","modified_gmt":"2025-11-16T12:06:04","slug":"%e5%93%88%e5%b7%a5%e5%a4%a7%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f-3-%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/starhill.online\/index.php\/2025\/11\/16\/%e5%93%88%e5%b7%a5%e5%a4%a7%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f-3-%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86\/","title":{"rendered":"\u54c8\u5de5\u5927\u64cd\u4f5c\u7cfb\u7edf-3-\u5185\u5b58\u7ba1\u7406"},"content":{"rendered":"

\u5185\u5b58\u4f7f\u7528\u4e0e\u5206\u6bb5<\/h2>\n
\n

\u5185\u5b58\u4f7f\u7528:\u5c06\u7a0b\u5e8f\u653e\u5230\u5185\u5b58\u4e2d\uff0cPC\u6307\u5411\u5f00\u59cb\u5730\u5740<\/p>\n<\/blockquote>\n

\"20_1\"<\/div><\/figure>\n
\"20_2\"<\/div><\/figure>\n
\n

\u539f\u672c\u5185\u5b58\u4e2d\u987a\u5e8f\u5e38\u9a7b\u7cfb\u7edf –> \u8fdb\u7a0b1 –> \u8fdb\u7a0b\u4e09 <\/p>\n

    \n
  1. \u8fdb\u7a0b\u4e00 \u7761\u7720\u5148\u5165\u78c1\u76d8<\/li>\n
  2. \u8fdb\u7a0b\u4e8c \u8fdb\u5165\u5185\u5b58<\/li>\n
  3. \u8fdb\u7a0b\u4e09 \u7761\u7720\u6362\u51fa<\/li>\n
  4. \u8fdb\u7a0b\u4e00 \u6362\u5165<\/li>\n<\/ol>\n

    \u4e5f\u5c31\u662f \u5b9e\u9645\u5185\u5b58\u4e2d\u8c03\u7528\u7684\u5730\u5740\u662f \u52a8\u6001\u57fa\u5730\u5740 + \u504f\u79fb\u5730\u5740<\/p>\n

      \n
    • \u8be6\u60c5\u5982\u4e0b<\/li>\n<\/ul>\n<\/blockquote>\n
      \"20_3\"<\/div><\/figure>\n
      \n

      \u7f16\u8bd1\u540e\u7684\u5185\u5b58\u57fa\u5730\u5740\u901a\u8fc7PCB\u8fdb\u884c\u8bb0\u5f55\uff0c\u4e5f\u5c31\u662f\u8bf4pcb\u5728\u8fdb\u7a0b\u8c03\u5ea6\u7684\u65f6\u5019\uff0cPCB\u5185\u90e8\u5b58\u7684\u57fa\u5730\u5740 ip \u52a8\u6001\u53d8\u5316\u7684<\/p>\n<\/blockquote>\n

      \"20_4\"<\/div><\/figure>\n

      \u7a0b\u5e8f\u6bb5\u7ed3\u6784<\/h3>\n
      \"20_5\"<\/div><\/figure>\n
      \n

      \u7ffb\u8bd1\uff1a<\/p>\n

        \n
      • \u5404\u4e2a\u7a0b\u5e8f\u6bb5 \uff1a \u5982\u6570\u636e\u6bb5\u3001\u4ee3\u7801\u6bb5\u3001\u6808\u6bb5\u7b49\u90fd\u662f\u72ec\u7acb\u7684\u5b58\u5728\u7684 \uff0c\u5728\u5185\u5b58\u4e2d\u5206\u5e03\u6210\u5757\u72b6<\/li>\n<\/ul>\n<\/blockquote>\n
        \"20_6\"<\/div><\/figure>\n
        \n

        \u5982\u4e0a\uff0c\u6bcf\u4e00\u4e2a\u533a\u57df\u7684\u8d77\u59cb\u5730\u5740\u5728\u81ea\u5df1\u7684\u5185\u5b58\u533a\u57df\u90fd\u770b\u4f5c\u8d77\u59cb\u5730\u5740<\/p>\n

        \"20_7\"<\/div><\/figure>\n
          \n
        • LDT\u8868\u4e2d\u8bb0\u5f55\u6bcf\u4e2a\u5757\u4e2d\u7684\u521d\u59cb\u5730\u5740<\/li>\n
        • GDT\u8868\u4e2d\u4e5f\u5b58\u5165LDT\u8868\u4e2d\u7684\u5730\u5740<\/li>\n
        • \u5373\u53ef\u4ee5\u901a\u8fc7GDT\u627e\u5230LDT\u8868\uff0c\u8fdb\u800c\u786e\u5b9a\u6307\u4ee4\u5728\u5185\u5b58\u4e2d\u7684\u65b9\u4f4d<\/li>\n<\/ul>\n

          \u5185\u5b58\u5206\u533a\u4e0e\u5206\u9875<\/h2>\n
          \n

          \u9996\u5148\u660e\u786e\u4e00\u70b9\uff0c\u53ea\u8981\u548c\u8fdb\u7a0b\u6709\u7ba1\u7684\u4fe1\u606f\u90fd\u653e\u5728PCB\u4e2d\uff0c\u4f8b\u5982(LDT\u8868)<\/p>\n<\/blockquote>\n

          \"21_1\"<\/div><\/figure>\n
          \n
            \n
          • \u4e09\u4e2a\u9002\u914d\u89c4\u5219<\/li>\n<\/ul>\n<\/blockquote>\n
            \"21_2\"<\/div><\/figure>\n
            \"21_3\"<\/div><\/figure>\n
            \n

            \u6bd4\u5982\u4e0a\u8ff0\u7684 mov [0x2240]\uff0c%eax<\/p>\n

              \n
            1. 2240\u9664\u4ee54K \uff0c\u4e5f\u5c31\u662f\u5de6\u79fb3\u4f4d(\u8fd9\u91cc\u4e3a16\u8fdb\u5236\uff0c\u6240\u4ee5\u4e3a\u4e09\u4f4d\u5373\u53ef)\uff0c\u8ba1\u7b97\u5f97\u51fa\u9875\u53f7<\/li>\n
            2. \u968f\u540e\u901a\u8fc7PCB\u4e2d\u7684\u9875\u8868\u6307\u9488<\/strong>\u627e\u51fa\u9875\u53f7<\/strong>\u5bf9\u5e94\u7684\u9875\u6846\u53f7\uff0c\u968f\u540e\u7528\u9875\u6846\u53f7 \u00d7 12bit \u5f97\u5230\u5b9e\u9645\u7684\u7269\u7406\u5730\u5740<\/li>\n<\/ol>\n<\/blockquote>\n

              \u591a\u7ea7\u9875\u8868\u4e0e\u5feb\u8868<\/h2>\n
              \"22_1\"<\/div><\/figure>\n
              \n

              \u5982\u4f55\u627e\u5230\u5730\u5740\uff1a<\/strong><\/p>\n

              \u6839\u636e \u903b\u8f91\u9875\u53f7 \u627e\u5230 \u9875\u6846\u53f7<\/p>\n<\/blockquote>\n

              \"22_2\"<\/div><\/figure>\n
              \"22_3\"<\/div><\/figure>\n
              \n

              \u89e3\u91ca\uff1a<\/strong><\/p>\n

              \u8fd9\u91cc\u4e3a\u4e24\u4e2a\u8fdb\u7a0b\u7b97<\/p>\n

              \u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u7684 \u9875\u76ee\u5f55\u8868 + \u9875\u8868 \u8fd9\u91cc\u5f15\u51fa\u4e24\u4e2a\u8fdb\u7a0b\uff0c\u4e5f\u5c31\u662f4K + 4K = 8K,\u53c8\u56e0\u4e3a\u4e24\u4e2a\u8fdb\u7a0b\uff0c\u6240\u4ee5\u653b\u5360\u752816K\u7684\u5185\u5b58\u7a7a\u95f4<\/p>\n<\/blockquote>\n

              \n
              \n

              \u591a\u7ea7\u9875\u8868\u589e\u52a0\u4e86\u8bbf\u5b58\u7684\u6b21\u6570\uff0c\u5c24\u5176\u662f64\u4f4d\u7cfb\u7edf<\/strong><\/p>\n

              \"22_4\"<\/div><\/figure>\n
              \n

              TLB -> \u5feb\u8868\uff0c\u662f\u4e00\u4e2areg\u7528\u6765\u5feb\u901f\u627e\u5230 \u9875\u6846\u53f7 \uff0c\u786e\u5b9a\u7269\u7406\u9875\u53f7\uff0c\u6709\u4e9b\u50cfcache,\u5982\u679cTLB\u4e2d\u6ca1\u6709\u67e5\u5230\u9700\u8981\u7684\u9875\u53f7\uff0c\u5219\u8fd8\u662f\u53bb\u591a\u7ea7\u9875\u8868\u4e2d\u67e5\u627e\uff0c\u627e\u5230\u4e86\u5c31\u653e\u5165TLB \u4e2d\uff0c\u4e0b\u6b21\u5c31\u65e0\u9700\u53bb\u591a\u7ea7\u9875\u8868\u4e2d\u67e5\u627e<\/p>\n

              \u8bf4\u767d\u4e86\u5c31\u662f\u7528\u4e00\u4e2a\u7f13\u51b2\u533a\u4f5c\u4e3a \u52a0\u901f\u5668<\/strong> <\/p>\n<\/blockquote>\n

              \"22_5\"<\/div><\/figure>\n
              \/************\n\n\u6709\u6548\u8bbf\u95ee\u65f6\u95f4 \u5148\u662f\u67e5TLB\u8868(\u67e5\u8868\u5c31\u8981\u8bbf\u5b58\uff0c\u6240\u4ee5\u52a0\u4e0a\u4e00\u6b21TLB\u7684\u8bbf\u5b58\u65f6\u95f4)\uff0c\u540e\u9762\u662f\u6ca1\u6709\u547d\u4e2d\u7684\u65f6\u5019\uff0c\u5148\u662fTLB\u7684\u8bbf\u5b58\u65f6\u95f4MA\uff0c\u968f\u540e\u8fd8\u8981\u8bbf\u95ee\u591a\u7ea7\u9875\u8868\u4e2d\u7684\u8bbf\u5b58\u65f6\u95f4MA\uff0c\u6240\u4ee5\u662f2MA\n\n************\/<\/code><\/pre>\n
              \n
              \u6ce8\u610f\u540e\u9762\uff1a<\/p>\n
              TLB\u7684\u662f\u5bc4\u5b58\u5668reg\u4ef7\u683c\u8d35\uff0c\u4f46\u662fTLB\u8d8a\u5927\u5e26\u6765\u7684\u6548\u679c\u5c31\u8d8a\u5f3a\uff0c\u547d\u4e2d\u7387\u5c31\u4f1a\u62c9\u9ad8\uff0c\u6b64\u65f6\u6211\u4eec\u901a\u8fc7\u591a\u7ea7\u9875\u8868\u5c31\u4f1a\u5c11\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6548\u7387\uff01\uff01\uff01<\/p>\n
              \u9700\u8981 \u59a5\u534f \u5e73\u8861 \u6298\u4e2d<\/strong><\/p>\n<\/blockquote>\n
              \"22_6\"<\/div><\/figure>\n
              \u6bb5\u9875\u7ed3\u5408\u7684\u5b9e\u9645\u5185\u5b58\u7ba1\u7406<\/h2>\n
              \"23_1\"<\/div><\/figure>\n
              \u5148\u5206\u6bb5\u518d\u5206\u9875\uff0c\u7528\u6237\u9762\u5411\u865a\u62df\u5730\u5740\uff0c\u865a\u62df\u5730\u5740\u7ffb\u8bd1\u4e4b\u540e\u7684\u5bf9\u7528\u6237\u662f\u900f\u660e\u7684(\u770b\u4e0d\u89c1)\uff0c\u8ba1\u7b97\u673a\u662f\u5bf9\u5206\u9875\u64cd\u4f5c\u7684<\/p>\n
              \"23_2\"<\/div><\/figure>\n
              \n
              \u5148\u662f  \u903b\u8f91\u5730\u5740  –>  \u865a\u62df\u5730\u5740  –>  \u901a\u8fc7\u9875\u53f7\u548c\u504f\u79fb\u627e\u5230\u7684\u5b9e\u9645\u7684\u9875\u6846\u53f7  –>  \u518d\u627e\u51fa\u7269\u7406\u5730\u5740  <\/p>\n
              \n
              \u4f8b\u5b50 \uff1a jmp 40<\/p>\n
              \u5219\u5bf9\u5e94\u7269\u7406\u5730\u5740\u5c31\u662f1040, \u5373\u518d\u6700\u540e\u7684\u7269\u7406\u5730\u5740\u7684\u65f6\u5019  \u57fa\u5730\u5740\u624d\u52a0\u4e0a\u504f\u79fb\u7684 40<\/p>\n<\/blockquote>\n<\/blockquote>\n
              \u4e00\u4e2a\u5b9e\u9645\u7684\u6bb5\u3001\u9875\u5f0f\u5185\u5b58\u7ba1\u7406<\/h3>\n
              \"23_3\"<\/div><\/figure>\n
              \"23_4\"<\/div><\/figure>\n
              \n
                \n
              1. \u9996\u5148\u662f\u5728 \u865a\u62df\u5185\u5b58<\/strong> \u4e2d\u9009\u51fa\u4e00\u6bb5\u5185\u5b58\u8f7d\u5165<\/li>\n
              2. \u5efa\u7acb\u865a\u62df\u5730\u5740\u5185\u5b58\u7684\u8868<\/li>\n
              3. \u628a\u521a\u521a\u8f7d\u5165\u7684\u6bb5\u8fdb\u884c\u5206\u9875<\/li>\n
              4. \u5efa\u7acbLDT\u8868\u8fdb\u884c\u7d22\u5f15(\u5b9e\u9645\u7684\u7269\u7406\u5730\u5740)<\/li>\n<\/ol>\n<\/blockquote>\n
                \"23_5\"<\/div><\/figure>\n
                \n
                  \n
                • copy_mem \u5206\u914d\u865a\u5b58\u3001\u5efa\u6bb5\u8868<\/li>\n<\/ul>\n
                    \n
                  1. p : PCB \u7ba1\u7406\u8fdb\u7a0b\u7684\u6570\u636e\u7ed3\u6784<\/li>\n
                  2. ldt : \u4e0epcb\u8fdb\u7a0b\u76f8\u5173\u8054<\/li>\n
                  3. nr : task\u6570\u7ec4\u7684\u7d22\u5f15\uff0c\u5373\u7b2c\u51e0\u4e2a\u8fdb\u7a0b<\/li>\n
                  4. new_data_base : \u57fa\u5740<\/li>\n<\/ol>\n<\/blockquote>\n
                    \"23_6\"<\/div><\/figure>\n
                    \n
                    \u6bcf\u4e2a\u8fdb\u7a0b\u9700\u8981\u53c8\u81ea\u5df1\u7684\u9875\u8868\u548c\u6bb5\u8868\uff0c\u9875\u8868\u53ef\u4ee5\u4e0d\u7528\u5207\u6362\uff0c\u56e0\u4e3a\u4e92\u4e0d\u91cd\u53e0<\/p>\n
                    \u4f46\u662f\u5728\u5b9e\u9645\u7684\u7cfb\u7edf\u7684\u662f\u5f88\u6709\u53ef\u80fd\u91cd\u53e0\u7684<\/strong><\/p>\n<\/blockquote>\n
                    \"23_7\"<\/div><\/figure>\n
                    \n
                    \u8fd9\u91cc\u662f\u5b50\u8fdb\u7a0b\u7684\u521b\u5efa\uff1a<\/p>\n
                      \n
                    • \u7236\u8fdb\u7a0b \u548c \u5b50\u8fdb\u7a0b \u516c\u7528\u4e00\u7247\u5185\u5b58 <\/li>\n<\/ul>\n<\/blockquote>\n
                      \"23_8\"<\/div><\/figure>\n
                      \n
                      \u4e0a\u56fe\u4e3b\u8981\u5f97\u5230\u76ee\u5f55\u9879\u7684\u7f16\u53f7<\/p>\n
                      \u4e3a\u4ec0\u4e48\u8981 >>20 \u800c\u4e0d\u662f >>22\u5462<\/strong>\uff1a<\/p>\n
                      \u7b54\u6848 \uff1a \u5148\u662f>>22\u53d6\u5f97\u9875\u76ee\u5f55\u53f7\uff0c\u4f46\u662f\u4e00\u4e2a\u9875\u76ee\u5f55\u53f7\u662f\u5360 4byte ,\u6240\u4ee5\u8fd8\u8981\u4e584( <>20 \u800c\u4e0d\u662f >>22<\/p>\n<\/blockquote>\n
                      \"23_9\"<\/div><\/figure>\n
                      \n
                      \u7ed9\u5b50\u8fdb\u7a0b\u5206\u914d\u5185\u5b58\uff0c\u539f\u5148\u5b50\u8fdb\u7a0b\u7684\u9875\u8868\u662f\u7a7a\u7684\uff0c\u4e0d\u8fdb\u884c\u5206\u914d\uff0c\u4e0d\u5360\u7528\u5185\u5b58\u8d44\u6e90\uff0c\u9700\u8981\u65f6\u5728\u8fdb\u884c\u5206\u914d<\/p>\n
                      get_free_page : \u5206\u914d\u5185\u5b58\u7a7a\u95f4\u7684\u51fd\u6570\uff0c\u4f5c\u7528\u662f\u627e\u5230\u5185\u5b58\u4e2d\u662f 0 \u7684\u4e00\u9879(\u5bfb\u627e\u5185\u5b58\u4e2d\u7a7a\u767d\u7684 \u5730\u65b9\u597d\u7528\u6765\u5206\u914d)<\/p>\n
                        \n
                      • \u6b64\u65f6\u9875\u76ee\u5f55\u5df2\u7ecf\u521b\u5efa\u5b8c\u6bd5<\/li>\n<\/ul>\n<\/blockquote>\n
                        \"23_10\"<\/div><\/figure>\n
                        \u5c06\u5b50\u8fdb\u7a0b\u548c\u7236\u8fdb\u7a0b\u6307\u5411\u540c\u4e00\u4e2a\u9875\u8868(\u6b64\u65f6\u8fdb\u7a0b\u5171\u4eab)<\/p>\n
                          \n
                        1. *from_page_table \uff1a\u662f\u7236\u8fdb\u7a0b\u7684\u9875\u5730\u5740<\/li>\n
                        2. this_page \uff1a \u7528this_page\u7ed9\u5b50\u8fdb\u7a0b\u7684to_page_table\u8d4b\u503c\uff0c\u4e14\u8be5\u53d8\u91cf\u80fd\u8fdb\u884c\u53ea\u8bfb\u9501\u5b9a<\/li>\n
                        3. mem_map \uff1a \u81ea\u52a0\uff0c\u5982\u679c\u7236\u8fdb\u7a0b\u7ed3\u675f\uff0c\u5185\u5b58\u4e5f\u4e0d\u80fd\u91ca\u653e\uff0c\u5b50\u8fdb\u7a0b\u8fd8\u9700\u8981\u4f7f\u7528<\/li>\n<\/ol>\n
                          \"23_11\"<\/div><\/figure>\n
                          \n
                          \u4e0a\u56fe\u6613\u4e8e\u7406\u89e3<\/strong><\/p>\n<\/blockquote>\n
                          \"23_12\"<\/div><\/figure>\n
                          \u603b\u7ed3\u4e0a\u56fe \uff1a<\/strong><\/p>\n
                          \n
                          \n
                            \n
                          • \n
                            \u8fdb\u7a0b\u4e2d\u7684 p = 0x300<\/code> \u6307\u7684\u662f\u865a\u62df\u5185\u5b58\u5730\u5740\uff0c\u800c\u7269\u7406\u5185\u5b58\u7684\u5730\u5740\u5982 0x00400300<\/code> \u5219\u662f\u5b9e\u9645\u7684\u5b58\u50a8\u5730\u5740\u3002<\/p>\n<\/li>\n
                          • \n
                            fork()<\/code> \u521b\u5efa\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u3002\u6b64\u65f6\uff0c\u5b50\u8fdb\u7a0b\u4f1a\u590d\u5236\u7236\u8fdb\u7a0b\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4\uff0c\u4f46\u4e0d\u4f1a\u7acb\u5373\u590d\u5236\u7269\u7406\u5185\u5b58\u4e2d\u7684\u6570\u636e<\/strong>\u3002<\/p>\n
                            \u7236\u5b50\u8fdb\u7a0b\u5728 fork()<\/code> \u540e\u5171\u4eab\u76f8\u540c\u7684\u7269\u7406\u5185\u5b58\u5730\u5740\uff08\u5982\u56fe\u4e2d 0x00007300<\/code> \u4f4d\u7f6e\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n
                            \u5199\u65f6\u590d\u5236\u673a\u5236<\/strong>\uff1a<\/p>\n
                              \n
                            • \u5f53\u5b50\u8fdb\u7a0b\u6216\u7236\u8fdb\u7a0b\u8bd5\u56fe\u4fee\u6539\u5171\u4eab\u5185\u5b58\u4e2d\u7684\u6570\u636e\u65f6\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u89e6\u53d1\u5199\u65f6\u590d\u5236\u3002<\/li>\n
                            • \u5982\u56fe\u6240\u793a\uff0c\u5f53\u5b50\u8fdb\u7a0b\u4fee\u6539 p<\/code> \u6307\u5411\u7684\u5185\u5b58\uff08\u5c06\u503c 7<\/code> \u6539\u4e3a 8<\/code>\uff09\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5148\u5c06\u5171\u4eab\u7684\u7269\u7406\u5185\u5b58\u6570\u636e\u590d\u5236\u5230\u65b0\u5730\u5740<\/strong>\uff08\u5982 0x00008300<\/code>\uff09\uff0c\u7136\u540e\u5b50\u8fdb\u7a0b\u4fee\u6539\u8fd9\u4e2a\u65b0\u5730\u5740\u4e2d\u7684\u6570\u636e<\/strong>\u3002<\/li>\n
                            • \u4fee\u6539\u540e\u7684\u7236\u5b50\u8fdb\u7a0b\u5185\u5b58\u5730\u5740\u5c06\u4e0d\u518d\u5171\u4eab\uff0c\u907f\u514d\u76f8\u4e92\u5f71\u54cd\u3002<\/li>\n<\/ul>\n
                              \n
                              \u4e0a\u534a\u90e8\u5206\u8868\u793a\u7236\u8fdb\u7a0b\u7684\u5185\u5b58\u72b6\u6001\uff1a*p = 7<\/code> \u8868\u793a p<\/code> \u6307\u5411\u7684\u5185\u5b58\u5730\u5740\u4e2d\u5b58\u50a8\u7684\u503c\u4e3a 7<\/code>\uff0c\u7269\u7406\u5185\u5b58\u5730\u5740\u4e3a 0x00007300<\/code>\u3002<\/p>\n
                              fork()<\/code> \u540e\uff0c\u4e0b\u534a\u90e8\u5206\u662f\u5b50\u8fdb\u7a0b\u7684\u72b6\u6001\uff1a\u5b50\u8fdb\u7a0b p<\/code> \u6307\u5411\u7684\u5185\u5b58\u5730\u5740\u4e2d\u503c\u88ab\u4fee\u6539\u4e3a 8<\/code>\uff0c\u6b64\u65f6\u5199\u65f6\u590d\u5236\u53d1\u751f\uff0c\u5b50\u8fdb\u7a0b\u83b7\u53d6\u4e86\u65b0\u7684\u7269\u7406\u5185\u5b58\u5730\u5740 0x00008300<\/code>\uff0c\u7236\u8fdb\u7a0b\u7ee7\u7eed\u4fdd\u6301\u539f\u5730\u5740\u4e0d\u53d8\u3002<\/p>\n
                              \u5185\u5b58\u6362\u5165-\u8bf7\u6c42\u8c03\u9875<\/h2>\n
                              \"24_1\"<\/div><\/figure>\n
                              \n
                              \u8bf7\u6c42\u7684\u65f6\u5019\u518d\u6620\u5c04\uff01\uff01\uff01   \u8bf4\u767d\u4e86\u5c31\u662f\u4e00\u6bb5\u5185\u5b58\u590d\u7528<\/strong><\/p>\n<\/blockquote>\n
                              \"24_2\"<\/div><\/figure>\n
                              \"24_3\"<\/div><\/figure>\n
                              \n
                                \n
                              1. \u662fMMU\u786c\u4ef6\u6267\u884c\u7684\uff0c\u4eba\u4e3a\u5e72\u9884\u4e0d\u4e86\uff0c\u4f46\u662f\u4eba\u4e3a\u53ef\u4ee5\u5e72\u9884\u5185\u6838\u4e2d\u7684\u64cd\u4f5c<\/li>\n
                              2. \u7cfb\u7edf\u53d1\u73b0\u7f3a\u9875\uff0c\u53bb\u4e2d\u65ad\u8868\u4e2d\u67e5\u8be2\u7f3a\u9875\u4e2d\u65ad\u53f7\uff0c\u8fdb\u5165\u4e2d\u65ad\u8fdb\u884c\u8865\u9875<\/li>\n
                              3. \u627e\u5230\u78c1\u76d8\u4e2d\u7a0b\u5e8f\u9700\u8981\u4f7f\u7528\u7684\u9875<\/li>\n
                              4. \u8f7d\u5165\u5230\u7269\u7406\u5185\u5b58<\/li>\n
                              5. cpu\u91cd\u65b0\u4ece\u865a\u62df\u5185\u5b58\u4e2d\u8bfb\u53d6\u6307\u4ee4\uff0c\u865a\u62df\u5185\u5b58 \u4ece \u7269\u7406\u5185\u5b58\u4e2d\u8c03\u7528<\/li>\n
                              6. \u4ee5\u4e0a\u5b8c\u5168\u5c31\u662f\u4e00\u4e2a\u4e2d\u65ad\u5904\u7406\u51fd\u6570\uff0c\u6240\u4ee5\u5f53cpu\u6267\u884c\u4e2d\u65ad\u7684\u65f6\u5019\uff0cPC\u503c\u5728\u81ea\u52a8\u7684\u60c5\u51b5\u4e0b\u4f1a PC++ \uff0c\u4f46\u662f\uff01\uff01\uff01\u8fd9\u91cc\u7cfb\u7edf\u4f1a\u81ea\u52a8\u4e0d\u8ba9\u5176PC + 1\uff0c\u8fd8\u662f\u4ece\u7f3a\u9875\u7684\u5730\u5740\u5f00\u59cb\u6267\u884c\u3002<\/li>\n<\/ol>\n
                                \u7528\u6237\uff1a\u5361\u4e86\u4e00\u4e0b\uff0c\u4f46\u662f\u5e76\u4e0d\u77e5\u9053\u7cfb\u7edf\u7684\u540e\u53f0\u8c03\u7528\u9875<\/p>\n<\/blockquote>\n
                                \"24_4\"<\/div><\/figure>\n
                                \n
                                \u590d\u4e60\u4e00\u4e0b\uff1a<\/strong><\/p>\n
                                idt : \u4e2d\u65ad\u5411\u91cf\u8868\uff0c\u521d\u59cb\u5316idt\u5f62\u6210\u5411\u91cf\u4e2d\u65ad\u5bf9\u5e94\u53f7\u4ee5\u53ca\u76f8\u5bf9\u5e94\u7684\u4e2d\u65ad\u6267\u884c\u51fd\u6570<\/p>\n<\/blockquote>\n
                                \"24_5\"<\/div><\/figure>\n
                                \n
                                  \n
                                • \u5de6\u8fb9\uff1a<\/li>\n<\/ul>\n
                                    \n
                                  1. \u5148\u662f\u4e00\u5806\u538b\u6808\u8fdb\u884c\u73b0\u573a\u7684\u4fdd\u62a4<\/li>\n
                                  2. movl $0x10, %edx \u8fdb\u5165\u5185\u6838\u6808\u7684\u9009\u62e9\u5b50<\/li>\n
                                  3. \u5229\u7528 cr2<\/strong> \u6765\u4fdd\u5b58 \u9875\u9519\u8bef\u7ebf\u6027\u5730\u5740\uff08\u865a\u62df\u5730\u5740\uff09<\/strong><\/li>\n<\/ol>\n
                                    \n
                                    \n
                                      \n
                                    • \u53f3\u8fb9<\/li>\n<\/ul>\n
                                        \n
                                      1. pushl %eax  \u540e\u9762call _do_no_page ,\u8fd9\u4e24\u53e5\u5c31\u662f\u8c03\u7528c\u8bed\u8a00\uff0c\u8fdb\u884c\u4f20\u5165\u9519\u8bef\u9875\u7684\u53c2\u6570<\/li>\n<\/ol>\n<\/blockquote>\n
                                        \"24_6\"<\/div><\/figure>\n
                                        address&=0xfffff000;<\/strong>  \u4e0e\u64cd\u4f5c\u5f97\u5230\u9875\u9762\u5730\u5740(\u5373\u540e12\u4f4d)<\/p>\n
                                          \n
                                        • bread_page<\/strong>:  (block_read_page) \u53bb\u78c1\u76d8\u4e0a\u8bfb<\/li>\n<\/ul>\n
                                            \n
                                          1. \u8bfb\u53d6\u7684\u6570\u636e\u7ed9page(\u521a\u521a\u7684\u7f3a\u9875\u5730\u65b9)  <\/li>\n
                                          2. executable  \u8fdb\u7a0b\u6240\u5bf9\u5e94\u7684\u53ef\u6267\u884c\u6587\u4ef6<\/li>\n<\/ol>\n
                                            put_page :<\/strong> \u5efa\u7acb\u7269\u7406\u9875\u548c\u865a\u62df\u9875\u4e4b\u95f4\u7684\u6620\u5c04<\/p>\n
                                            \"24_7\"<\/div><\/figure>\n
                                              \n
                                            1. \u6839\u636e address<\/strong> \u627e\u5230 \u9875\u76ee\u5f55\u9879<\/strong><\/li>\n
                                            2. \u6839\u636e \u9875\u76ee\u5f55\u9879<\/strong> \u627e\u5230\u9875\u8868\u9879<\/li>\n
                                            3. \u6839\u636e \u9875\u8868\u9879<\/strong> \u548c \u521a\u521a\u627e\u5230\u7684 page\u5185\u5b58 \u8fdb\u884c\u6620\u5c04<\/li>\n<\/ol>\n
                                              \u5185\u5b58\u6362\u51fa<\/h2>\n
                                              \u5f15\u8a00<\/strong> \uff1a<\/p>\n
                                              \"25_1\"<\/div><\/figure>\n
                                              \"25_2\"<\/div><\/figure>\n
                                              ABCD \u8fdb\u7a0b\u6ca1\u6709\u4e00\u4e2a\u6267\u884c\u5b8c\u6bd5\uff0c\u5bfc\u81f4\u4e0d\u505c\u7684\u6253\u65ad(\u7f3a\u9875)<\/p>\n
                                              \"25_3\"<\/div><\/figure>\n
                                              \u65b9\u6cd5\u89c4\u5219\u662f \uff1a \u9884\u6d4b\u4e0b\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u6362\u6389\u4e0d\u5728\u8fd0\u884c\u961f\u5217\u7684\u8fdb\u7a0b\uff0c\u5c31\u662f”\u6700\u4f18”\u3002<\/p>\n
                                              \u95ee\u9898 \uff1a \u600e\u4e48\u9884\u6d4b\u662f\u4e2a\u95ee\u9898\uff01<\/strong><\/p>\n
                                              \"25_4\"<\/div><\/figure>\n
                                              LRU\u7684\u51c6\u786e\u5b9e\u73b0—\u65f6\u95f4\u6233<\/h3>\n
                                              \"25_5\"<\/div><\/figure>\n
                                              \u6bcf\u4e00\u6b21\u90fd\u8981\u67e5\u770b\u65f6\u95f4\u6233\uff0c\u6bcf\u6b21\u6362\u9875\u7684\u65f6\u5019\u90fd\u8981\u6539\u53d8\u6570\u5b57\uff0c\u65f6\u95f4\u6233\u8d8a\u6765\u8d8a\u5927\uff0c\u5f88\u6709\u53ef\u80fd\u53d1\u751f\u6ea2\u51fa<\/p>\n
                                              LRU\u7684\u51c6\u786e\u5b9e\u73b0—\u9875\u7801\u6808<\/h3>\n
                                              \"25_6\"<\/div><\/figure>\n
                                              CLOCK\u7b97\u6cd5 — \u4e10\u7248<\/h3>\n
                                              \"25_7\"<\/div><\/figure>\n
                                              CLOCK\u7b97\u6cd5 — \u8c6a\u534e\u7248<\/h3>\n
                                              \"25_8\"<\/div><\/figure>\n
                                              \n
                                              \u5982\u4e0a\u56fe\uff1a<\/p>\n
                                              \u95ee\u9898\u6240\u5728\uff1a<\/strong>\u5982\u679c\u7a0b\u5e8f\u5728\u83ab\u4e00\u4e2a\u65f6\u95f4\u6bb5\u4e2d\u7f3a\u9875\u6b21\u6570\u975e\u5e38\u5c11\uff0c\u6b64\u65f6CLOCK\u4e2d\u7684R\u5c06\u4f1a\u9010\u6e10\u53d8\u4e3a1\uff0c\u5982\u679c\u7a81\u7136\u7f3a\u9875\uff0c\u5219\u9700\u8981\u8f6c\u4e00\u5708(\u5f88\u6162\u7684\u901f\u5ea6)\u624d\u80fd\u8fdb\u884c\u7f3a\u9875\u66f4\u6362<\/p>\n
                                              \u6709\u4e24\u4e2a\u6307\u9488\u8fdb\u884c\u76d1\u6d4b<\/strong><\/p>\n
                                                \n
                                              • \u7528\u6765\u6e05\u9664R\u4f4d\uff0c\u79fb\u52a8\u901f\u5ea6\u8981\u5feb!<\/li>\n
                                              • \u7528\u6765\u9009\u62e9\u6dd8\u6c70\u9875\uff0c\u79fb\u52a8\u901f\u5ea6\u6162!<\/li>\n<\/ul>\n<\/blockquote>\n
                                                \n
                                                \n
                                                \n
                                                \"25_9\"<\/div><\/figure>\n
                                                \n
                                                \u603b\u7ed3<\/strong> \uff1a<\/p>\n
                                                \"25_10\"<\/div><\/figure>\n<\/blockquote>","protected":false},"excerpt":{"rendered":"
                                                \u5185\u5b58\u4f7f\u7528\u4e0e\u5206\u6bb5 \u5185\u5b58\u4f7f\u7528:\u5c06\u7a0b\u5e8f\u653e\u5230\u5185\u5b58\u4e2d\uff0cPC\u6307\u5411\u5f00\u59cb\u5730\u5740 \u539f\u672c\u5185\u5b58\u4e2d\u987a\u5e8f\u5e38\u9a7b\u7cfb\u7edf –>  […]<\/p>","protected":false},"author":1,"featured_media":382,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,16],"tags":[11],"class_list":["post-394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-linux0-11","tag-linux"],"_links":{"self":[{"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/posts\/394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/comments?post=394"}],"version-history":[{"count":2,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/posts\/394\/revisions"}],"predecessor-version":[{"id":441,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/posts\/394\/revisions\/441"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/media\/382"}],"wp:attachment":[{"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/media?parent=394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/categories?post=394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starhill.online\/index.php\/wp-json\/wp\/v2\/tags?post=394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}