Re: [PATCH v5 11/11] random: insist on random_get_entropy() existing in order to simplify

Sandy Harris
2022-04-23T02:24:26Z

On Sat, Apr 23, 2022 at 6:37 AM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>
> All platforms are now guaranteed to provide some value for
> random_get_entropy(). In case some bug leads to this not being so, we
> print a warning, ...

Would it make sense to test at compile time? If there is no hardware
RNG nor a cycle counter, then the kernel should be compiled with
the gcc latent entropy plugin. Generate a warning suggesting that,
or even an error insisting on it.