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Date: Thu, 17 Jun 2021 08:22:16 +1000
From: Paul Mackerras <paulus@ozlabs.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Subject: Re: [PATCH 07/11] powerpc: Add support for microwatt's hardware
 random number generator
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Cc: linuxppc-dev@ozlabs.org, Nicholas Piggin <npiggin@gmail.com>
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On Wed, Jun 16, 2021 at 11:16:02PM +1000, Michael Ellerman wrote:
> Nicholas Piggin <npiggin@gmail.com> writes:
> > I would be happier if you didn't change this (or at least put it in its 
> > own patch explaining why it's not going to slow down other platforms).
> 
> It would essentially be a revert of 01c9348c7620 ("powerpc: Use hardware
> RNG for arch_get_random_seed_* not arch_get_random_*")
> 
> Which would be ironic :)

You expect me to remember things I did 6 years ago? :)

I'll take this part out.  My thinking originally was that since darn
on Microwatt is a single-cycle instruction, it would be faster to use
darn every time rather than run a software PRNG seeded from darn.
It's not critical though.

Paul.