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Re: [Qemu-devel] [RFC] reverse execution.

From: Peter Maydell
Subject: Re: [Qemu-devel] [RFC] reverse execution.
Date: Fri, 17 May 2013 18:54:33 +0100

On 17 May 2013 18:23, KONRAD Frédéric <address@hidden> wrote:
> It appeared that the replay is not deterministic even with icount:
>     - the whole icount mechanism is not saved with save_vm (which can be
> achieved by moving qemu_icount to TimerState according to Paolo)
>     - replaying two times the same thing and stopping at a specific
> breakpoint show two differents vmclock, so replaying the
>         same amount of time don't work, and we abandoned this idea.

Personally I think icount is supposed to be deterministic,
and if it isn't then it should be fixed to be so. Does anybody
who understands it better than me disagree?

-- PMM

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