Re: [Qemu-devel] [PATCH v8 20/20] replay: document development rules

[Artem Pisarenko]

> +Virtual devices can also use realtime clock for the events that do not
change
> +the guest state directly. When the clock ticking should depend on VM
execution
> +speed, use virtual ext clock. It is not deterministic, but its speed
depends
> +on the guest execution. This clock is used by the virtual devices (e.g.,
> +slirp routing device) that lie outside the replayed guest.

Virtual ext clock replaced with virtual clock timers having EXTERNAL
attribute.