22 lines
585 B
ReStructuredText
22 lines
585 B
ReStructuredText
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.. _virtio-rnd:
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Virtio-rnd
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##########
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The virtio-rnd entropy device supplies high-quality randomness for guest
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use. The virtio device ID of the virtio-rnd device is 4, and it supports
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one virtqueue, the size of which is 64, configurable in the source code.
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It has no feature bits defined.
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When the FE driver requires some random bytes, the BE device will place
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bytes of random data onto the virtqueue.
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To launch the virtio-rnd device, use the following virtio command::
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-s <slot>,virtio-rnd
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To verify the correctness in user OS, use the following
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command::
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od /dev/random
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