Re: [PATCH] random: do not take pool spinlock at boot

From: Dominik Brodowski
Date: Sun Feb 13 2022 - 01:57:23 EST


Am Sat, Feb 12, 2022 at 01:28:59AM +0100 schrieb Jason A. Donenfeld:
> Since rand_initialize() is run while interrupts are still off and
> nothing else is running, we don't need to repeatedly take and release
> the pool spinlock, especially in the RDSEED loop.
>
> Cc: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
> ---
> Dominik - I'm still a bit unclear about early boot semantics that you
> seem to know well. Is this patch correct?

It seems to be.

Reviewed-by: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>

Thanks,
Dominik