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Re: [Qemu-devel] [RFC] rng-random: allow to use getrandom()

From: Daniel P . Berrangé
Subject: Re: [Qemu-devel] [RFC] rng-random: allow to use getrandom()
Date: Thu, 9 May 2019 14:29:31 +0100
User-agent: Mutt/1.11.4 (2019-03-13)

On Thu, May 09, 2019 at 03:22:34PM +0200, Laurent Vivier wrote:
> Add a parameter to select the rng-random backend mode,
> from a file or from qemu_guest_getrandom():
>   -object rng-random,id=rng0,mode=file or
>   -object rng-random,id=rng0,mode=getrandom
> by default mode is file

I don't really see any benefit in overloading the existing rng-random
object with a completely different impl. There are already two distinct
backends, so we should just add a third "rng-builtin" which uses the
QEMU built-in APIs for collecting rand data.

This makes it trivial to detect support for this feature by simply
looking for existance of the new object class.

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