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On Thu, Mar 2, 2017 at 6:26 PM, Andrew Savchenko <bircoph@g.o> wrote: |
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> On Thu, 2 Mar 2017 03:42:24 -0500 Taiidan@×××.com wrote: |
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>> |
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>> The IOMMU (theoretically) protects the CPU and memory from rogue |
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>> devices, such as the hard drive. |
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> |
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> No. Any DMA capable device can bypass IOMMU. IOMMU was not |
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> designed to protect OS from device. |
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> |
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Huh? I thought protection against DMA attacks was half the reason for |
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an IOMMU in the first place. |
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|
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https://en.wikipedia.org/wiki/Input%E2%80%93output_memory_management_unit |
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-- |
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Rich |
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