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doc(FAQ): add enable IOMMU method with BMC for Hygon
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FAQ/environment_FAQ.md

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@@ -38,6 +38,10 @@ sudo reboot
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# 根据如下命令判断是否开启 IOMMU
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sudo cat /var/log/dmesg | grep -e "AMD-Vi: Interrupt remapping enabled" -e "IOMMU enabled"
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```
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> 对于 Hygon CPU 服务器,可能即使上述步骤执行完,依然无法解决,请尝试以下方法:
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> 1. 登录机器对应 BMC
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> 2. `远程控制` -> `Bios设置` -> `IO选项` -> `IOMMU` -> `Enable`
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> ![Hygon_BMC_IOMMU](../docs/images/FAQ_ENV_t3.png)
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#### 4. 容器内 mthreads-gmi 无输出
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docs/images/FAQ_ENV_t3.png

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