{"id":7480,"date":"2023-07-03T14:07:58","date_gmt":"2023-07-03T06:07:58","guid":{"rendered":"http:\/\/stmu.1000uc.com\/mu\/?p=7480"},"modified":"2023-07-03T14:09:11","modified_gmt":"2023-07-03T06:09:11","slug":"%e5%a5%87%e8%bf%b9mu%e4%b8%ad%e6%96%ad%e6%80%8e%e4%b9%88%e5%9b%9e%e4%ba%8b-%e6%88%91%e4%b8%8b%e8%bd%bd%e7%9a%84%e5%8d%95%e6%9c%ba%e7%89%88%e5%a5%87%e8%bf%b9%e4%b8%80%e9%80%89%e7%ba%bf%e8%b7%af","status":"publish","type":"post","link":"http:\/\/stmu.1000uc.com\/mu\/7480.html","title":{"rendered":"mu\u4e2d\u65ad\u600e\u4e48\u56de\u4e8b \u6211\u4e0b\u8f7d\u7684\u5355\u673a\u7248\u4e00\u9009\u7ebf\u8def\u5c31\u63d0\u793a\u548c\u670d\u52a1\u5668\u8fde\u63a5\u4e2d\u65ad"},"content":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u5173\u4e8e\u5947\u8ff9mu\u4e2d\u65ad\u600e\u4e48\u56de\u4e8b\u5f88\u591a\u670b\u53cb\u90fd\u8fd8\u4e0d\u592a\u660e\u767d\uff0c\u4eca\u5929\u5c0f\u7f16\u5c31\u6765\u4e3a\u5927\u5bb6\u5206\u4eab\u5173\u4e8e\u6211\u4e0b\u8f7d\u7684\u5355\u673a\u7248\u5947\u8ff9\u4e00\u9009\u7ebf\u8def\u5c31\u63d0\u793a\u548c\u670d\u52a1\u5668\u8fde\u63a5\u4e2d\u65ad\u7684\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u5404\u4f4d\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<h3>\u6211\u4e0b\u8f7d\u7684\u5355\u673a\u7248\u5947\u8ff9\u4e00\u9009\u7ebf\u8def\u5c31\u63d0\u793a\u548c\u670d\u52a1\u5668\u8fde\u63a5\u4e2d\u65ad<\/h3>\n<p>\u6740\u6bd2\u8f6f\u4ef6\u963b\u6b62\u4e86\u51e0\u4e2a\u8fdb\u7a0b\u9879\uff0c\u670d\u52a1\u5668\u5f00\u542f\u4e0d\u6210\u529f\uff0c\u6240\u4ee5\u4e00\u5f00\u59cb\u8fdb\u6e38\u620f\u754c\u9762\u5c31\u4f1a\u63d0\u793a\u548c\u670d\u52a1\u5668\u65ad\u5f00\u8fde\u63a5\u3002\u3002\u3002\u7edd\u5927\u90e8\u5206MU\u5355\u673a\u90fd\u6709\u6bd2\uff0c\u697c\u4e3b\u614e\u7528\uff01\u5982\u679c\u975e\u8981\u73a9\uff0c\u76f4\u63a5\u5173\u6389\u6240\u6709\u7684\u6740\u6bd2\u4ee5\u53ca\u6728\u9a6c\u8f6f\u4ef6\u7136\u540e\u542f\u52a8\u670d\u52a1\u5668\u8fdb\u6e38\u620f\uff0c\u6b64\u75c7\u72b6\u5c31\u6ca1\u4e86\uff01<\/p>\n<h3>\u4e3b\u677f\u7684iommu\u662f\u4ec0\u4e48\u529f\u80fd<\/h3>\n<p>IOMMU(i\/omemorymanagementunit)\u3002iommu\u6709\u4e24\u5927\u529f\u80fd\uff1a\u63a7\u5236\u8bbe\u5907dma\u5730\u5740\u6620\u5c04\u5230\u673a\u5668\u7269\u7406\u5730\u5740\uff08dmar\uff09\uff0c\u4e2d\u65ad\u91cd\u6620\u5c04\uff08intremap\uff09\uff08\u53ef\u9009\uff09<\/p>\n<p>1.1dma\u5730\u5740\u7a7a\u95f4\u6620\u5c04<\/p>\n<p>Iommu\u7684\u4e3b\u8981\u529f\u80fd\u4e3a\u8bbe\u5907dma\u65f6\u523b\u80fd\u591f\u8bbf\u95ee\u673a\u5668\u7684\u7269\u7406\u5185\u5b58\u533a\uff0c\u540c\u65f6\u4fdd\u8bc1\u5b89\u5168\u6027\u3002<\/p>\n<p>\u5728\u6ca1\u6709Iommu\u7684\u65f6\u5019\uff0c\u8bbe\u5907\u901a\u8fc7dma\u53ef\u4ee5\u8bbf\u95ee\u5230\u673a\u5668\u7684\u5168\u90e8\u7684\u5730\u5740\u7a7a\u95f4\u3002<\/p>\n<p>1\u3001\u8fd9\u79cd\u673a\u5236\u4e0b\u5982\u679c\u5c06\u8bbe\u5907\u7684\u9a71\u52a8\u653e\u5728\u7528\u6237\u6001\uff0c\u90a3\u4e48\u5982\u4f55\u4fdd\u62a4\u673a\u5668\u7269\u7406\u5185\u5b58\u533a\u5bf9\u4e8e\u7528\u6237\u6001\u9a71\u52a8\u6846\u67b6\u8bbe\u8ba1\u5e26\u6765\u6311\u6218\u3002\u5f53\u51fa\u73b0\u4e86iommu\u4ee5\u540e\uff0ciommu\u901a\u8fc7\u63a7\u5236\u6bcf\u4e2a\u8bbe\u5907dma\u5730\u5740\u5230\u5b9e\u9645\u7269\u7406\u5730\u5740\u7684\u6620\u5c04\u8f6c\u6362\uff0c\u4f7f\u5f97\u5728\u4e00\u5b9a\u7684\u5185\u6838\u9a71\u52a8\u6846\u67b6\u4e0b\uff0c\u7528\u6237\u6001\u9a71\u52a8\u80fd\u80fd\u591f\u5b8c\u5168\u64cd\u4f5c\u67d0\u4e2a\u8bbe\u5907dma\u548c\u4e2d\u65ad\u6210\u4e3a\u53ef\u80fd\u3002<\/p>\n<p>2\u3001\u5982\u679c\u5c06\u8fd9\u4e2a\u7269\u7406\u8bbe\u5907\u901a\u8fc7\u900f\u4f20\u7684\u65b9\u5f0f\u8fdb\u5165\u5230\u865a\u62df\u5316\u865a\u62df\u673a\u91cc\uff0c\u865a\u62df\u673a\u7684\u8bbe\u5907\u9a71\u52a8\u914d\u7f6e\u8bbe\u5907\u7684dma\u540e\uff0chypervisor\u5fc5\u987b\u5728\u900f\u4f20\u8bbe\u5907dma\u8bbf\u95ee\u65f6\u523b\uff0c\u5bf9dma\u8bbf\u95ee\u8fdb\u884c\u622a\u83b7\uff0c\u5c06\u5176\u4e2ddma\u8bbf\u95ee\u7684\u865a\u62df\u673a\u7269\u7406\u5730\u5740\uff0c\u8f6c\u6362\u4e3ahypervisor\u4e3a\u865a\u62df\u673a\u5206\u914d\u7684\u7269\u7406\u5730\u5740\uff0c\u4e5f\u5c31\u662f\u9700\u8981\u5c06\u865a\u62df\u673a\u900f\u4f20\u8bbe\u5907dma\u8bbf\u95ee\u505avpaddr(\u865a\u62df\u673a\u7269\u7406\u5730\u5740)&#8212;-&gt;ppaddr\uff08\u7269\u7406\u673a\u7269\u7406\u5730\u5740\uff09\u3002\u8fd9\u90e8\u5206\u622a\u83b7\u5bf9\u865a\u62df\u673adma\u6765\u8bf4\u5e26\u6765\u5207\u6362\u5230hypervisor\u5f00\u9500\uff0chypervisor\u8f6c\u6362\u5730\u5740\u5f00\u9500\u3002<\/p>\n<p>\u5f53\u5f15\u5165\u4e86iommu\u4ee5\u540e\uff0c\u8fd9\u90e8\u5206\u5f00\u9500\u7531iommu\u786c\u4ef6\u627f\u62c5\uff0c\u6240\u6709hypervisor\u5de5\u4f5c\u5c31\u66f4\u52a0\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06\u900f\u4f20\u8bbe\u5907Iommudma\u5730\u5740\u6620\u5c04\u8868\u4f7f\u7528vpaddr&#8212;&gt;ppaddr\u5730\u5740\u8f6c\u6362\u8868\u5373\u53ef\uff08\u8fd9\u90e8\u5206\u8868\u5728hypervisor\u91cc\u914d\u7f6e\u5728ept\u4e2d\uff09<\/p>\n<p>3\u3001\u65b9\u4fbf\u4e86\u8001\u5f0f32\u4f4dpci\u786c\u4ef6\u572864\u4f4d\u673a\u5668\u4e0a\u7684\u4f7f\u7528\u3002\u53ea\u9700\u8981\u5728iommu\u5730\u5740\u6620\u5c04\u8868\u4e0a\u914d\u7f6e32bitpci\u8bbe\u5907dma\u5730\u5740&#8211;&gt;64\u4f4d\u673a\u5668\u7269\u7406\u5730\u5740\u5373\u53ef\u3002<\/p>\n<p>4\u3001\u65b9\u4fbf\u4e86\u4e3b\u673aos\u914d\u7f6e\u8bbe\u5907dma\u5de5\u4f5c\uff0c\u56e0\u4e3adma\u8981\u6c42\u4f7f\u7528\u8fde\u7eed\u7684\u5730\u5740\u7a7a\u95f4\u8fdb\u884c\u8bfb\u5199\uff0c\u6709\u4e86iommu\u7684\u5b58\u5728os\u5c31\u53ef\u4ee5\u4e3a\u8bbe\u5907\u914d\u7f6e\u8fde\u7eed\u7684dma\u5730\u5740\u800c\u771f\u6b63\u5bf9\u5e94\u7684\u975e\u8fde\u7eed\u7684\u7269\u7406\u5730\u5740<\/p>\n<h3>\u5c0f\u7c73\u624b\u73af\u7ecf\u5e38\u65ad\u5f00,\u65e0\u6cd5\u5c4f\u5e55\u89e3\u9501\u600e\u4e48\u89e3\u51b3<\/h3>\n<p>1\u3001\u9996\u5148\u68c0\u67e5\u6743\u9650,\u628a\u6240\u6709\u6743\u9650\u6253\u5f00\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p>2\u3001\u68c0\u67e5\u7701\u7535\u6a21\u5f0f\u7684\u8bbe\u7f6e,\u6539\u6210\u65e0\u9650\u5236\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p>3\u3001\u7ec8\u6781\u65b9\u6848,\u9501\u6b7bapp,\u8fd9\u4e2a\u65b9\u5f0f\u5728MU\u4e0a\u4f1a\u628a\u6574\u4e2aapp\u9501\u5b9a,\u65e0\u6cd5\u88ab\u6740\u6b7b\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p>4\u3001\u8bbe\u7f6e\u5b8c\u6210,\u8fdb\u7a0b\u5c31\u4f1a\u4e00\u76f4\u5728\u540e\u53f0\u8fd0\u884c,\u540c\u65f6\u4f1a\u663e\u793a\u4e00\u628a\u9501\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p>5\u3001\u6700\u540e\u68c0\u67e5\u624b\u73af\u56fa\u4ef6\u7248\u672c,\u4e00\u5b9a\u8981\u5347\u7ea7\u5230\u6700\u65b0\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<h3>\u6211\u4e0b\u8f7d\u4e86\u4e00\u4e2a\u5947\u8ff9\u5355\u673a\u7248\uff0c\u4f46\u662f\u8fdb\u5165\u767b\u9646\u754c\u9762\u5c31\u63d0\u793a\u4e0e\u670d\u52a1\u5668\u65ad\u5f00\u8fde\u63a5\uff0c\u600e\u4e48\u529e<\/h3>\n<p>\u5148\u68c0\u67e5\u4f60\u7684\u670d\u52a1\u5668\u662f\u5426\u6b63\u5e38\u542f\u52a8\uff0c\u542f\u52a8\u662f\u5426\u5b8c\u5168\uff0c\u4e00\u822c\u5e94\u8be5\u662f\u4e03\u5230\u4e5d\u9879\u670d\u52a1\u3002\u4e0d\u77e5\u9053\u4f60\u7528\u7684\u4ec0\u4e48\u7248\u672c\uff0c\u7136\u540e\u68c0\u67e5\u767b\u5f55\u5668IP\u662f\u5426\u6b63\u786e\uff0c\u672c\u673a\u7528127.0.0.1<\/p>\n<h3>\u67b6\u8bbe\u5947\u8ff9\u600e\u4e48\u8fde\u4e0d\u5230MU\u670d\u52a1\u5668<\/h3>\n<p>\u5982\u679c\u662f\u5728\u6253\u8d26\u53f7\u5bc6\u7801\u4e4b\u540e\u51fa\u73b0\u4e0e\u670d\u52a1\u5668\u65ad\u5f00\u7684\u65b9\u5f0f\u561b\u3002\u4e00\u822c\u662f\u4f60\u5728\u542f\u52a8\u90a3\u4e9b\u542f\u52a8\u9879\u7684\u65f6\u5019\u5176\u4e2d\u6709\u4e00\u4e9b\u51fa\u95ee\u9898\u4e86\uff0c\u4f60\u8981\u6ce8\u610f\u770b\u4ed6\u4eec\u7684\u72b6\u6001\uff0c\u786e\u8ba4\u6bcf\u4e2a\u542f\u52a8\u9879\u7684\u72b6\u6001OK\u4e86\u4e4b\u540e\u518d\u767b\u5165\u6e38\u620f\uff0c\u4f60\u8fd9\u60c5\u51b5\u7adf\u7136102N\u80fd\u8fdb\u53bb<\/p>\n<p>\u6587\u7ae0\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u672c\u6b21\u5206\u4eab\u7684\u5947\u8ff9mu\u4e2d\u65ad\u600e\u4e48\u56de\u4e8b\u548c\u6211\u4e0b\u8f7d\u7684\u5355\u673a\u7248\u5947\u8ff9\u4e00\u9009\u7ebf\u8def\u5c31\u63d0\u793a\u548c\u670d\u52a1\u5668\u8fde\u63a5\u4e2d\u65ad\u7684\u95ee\u9898\u89e3\u51b3\u4e86\u60a8\u7684\u95ee\u9898\uff0c\u90a3\u4e48\u6211\u4eec\u7531\u8877\u7684\u611f\u5230\u9ad8\u5174\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u5173\u4e8e\u5947\u8ff9mu\u4e2d\u65ad\u600e\u4e48\u56de\u4e8b\u5f88\u591a\u670b\u53cb\u90fd\u8fd8\u4e0d\u592a\u660e\u767d\uff0c\u4eca\u5929\u5c0f\u7f16\u5c31\u6765\u4e3a\u5927\u5bb6\u5206\u4eab\u5173\u4e8e\u6211\u4e0b\u8f7d\u7684\u5355\u673a\u7248\u5947\u8ff9\u4e00\u9009\u7ebf\u8def\u5c31\u63d0\u793a\u548c\u670d\u52a1\u5668\u8fde\u63a5\u4e2d\u65ad\u7684\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u5404\u4f4d\u6709\u6240\u5e2e\u52a9\uff01 \u6211\u4e0b\u8f7d\u7684\u5355\u673a\u7248\u5947\u8ff9\u4e00\u9009\u7ebf\u8def\u5c31\u63d0\u793a\u548c\u670d\u52a1\u5668\u8fde\u63a5\u4e2d\u65ad \u6740\u6bd2\u8f6f\u4ef6\u963b\u6b62\u4e86\u51e0\u4e2a\u8fdb\u7a0b\u9879\uff0c\u670d\u52a1\u5668&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"_links":{"self":[{"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/posts\/7480"}],"collection":[{"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/comments?post=7480"}],"version-history":[{"count":1,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/posts\/7480\/revisions"}],"predecessor-version":[{"id":7481,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/posts\/7480\/revisions\/7481"}],"wp:attachment":[{"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/media?parent=7480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/categories?post=7480"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/tags?post=7480"},{"taxonomy":"topic","embeddable":true,"href":"http:\/\/stmu.1000uc.com\/mu\/wp-json\/wp\/v2\/topic?post=7480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}