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Passthrough virtio blk device #8

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KuangjuX opened this issue Feb 11, 2023 · 4 comments
Closed

Passthrough virtio blk device #8

KuangjuX opened this issue Feb 11, 2023 · 4 comments
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enhancement New feature or request help wanted Extra attention is needed

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@KuangjuX
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Passthrough virtio blk device and make hypocaust to support guest os file system.
@KuangjuX KuangjuX added enhancement New feature or request help wanted Extra attention is needed labels Feb 11, 2023
@KuangjuX
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The Hal trait in virtio_drivers provides the function of DMA to directly access the memory, thus bypassing the MMU to directly access the memory, which makes the shadow page table of the VMM useless, so the DMA can only be performed in the guest os to guest va to address translation for host pa.

Although the current VMM can run a guest operating system with a file system, it is still not a correct implementation because it modifies the test kernel, which shows that the VMM is not transparent to the guest operating system.

@KuangjuX
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PR #10 success to run guest os with file system

@KuangjuX
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Add IOMMU seems to fix #8 (comment)

@KuangjuX
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See PR #13

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