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AMD\u4e3b\u677f\u8bbe\u7f6e\u91cc\u7684iommu mode\u6709\u8c01\u7814\u7a76\u8fc7\u5417<\/h3>\n

IOMMU\uff1ainput\/outputmemorymanagementunit\u3002Device\u7684IOMMU\u7c7b\u4f3c\u4e8eCPU\u7684MMU\u3002<\/p>\n

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win7 64\u4f4d\uff0c\u80fd\u4e0d\u80fd\u5b89\u88c5Mastercam X5<\/h3>\n

win764\u4f4d\u80fd\u5b89\u88c5MastercamX5\u3002<\/p>\n

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\u4e3b\u677f\u7684iommu\u662f\u4ec0\u4e48\u529f\u80fd<\/h3>\n

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

1.1dma\u5730\u5740\u7a7a\u95f4\u6620\u5c04<\/p>\n

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

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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)—->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

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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–>64\u4f4d\u673a\u5668\u7269\u7406\u5730\u5740\u5373\u53ef\u3002<\/p>\n

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

bcm4908\u6027\u80fd\u600e\u4e48\u6837<\/h3>\n

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