Re: [PATCH v1 00/15] Add support for Nitro Enclaves

Pavel Machek
2020-05-07T17:44:42Z

Hi!

> > it uses its own memory and CPUs + its virtio-vsock emulated device for
> > communication with the primary VM.
> >
> > The memory and CPUs are carved out of the primary VM, they are dedicated
> > for the enclave. The Nitro hypervisor running on the host ensures memory
> > and CPU isolation between the primary VM and the enclave VM.
> >
> > These two components need to reflect the same state e.g. when the
> > enclave abstraction process (1) is terminated, the enclave VM (2) is
> > terminated as well.
> >
> > With regard to the communication channel, the primary VM has its own
> > emulated virtio-vsock PCI device. The enclave VM has its own emulated
> > virtio-vsock device as well. This channel is used, for example, to fetch
> > data in the enclave and then process it. An application that sets up the
> > vsock socket and connects or listens, depending on the use case, is then
> > developed to use this channel; this happens on both ends - primary VM
> > and enclave VM.
> >
> > Let me know if further clarifications are needed.
>
> Thanks, this is all useful. However can you please clarify the
> low-level details here?

Is the virtual machine manager open-source? If so, I guess pointer for sources
would be useful.

Best regards,
Pavel
--
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