Re: [v3 PATCH] hwrng: core - Remove add_early_randomness

["Jarkko Sakkinen" <jarkko@kernel.org>]

On Thu May 23, 2024 at 12:58 PM EEST, Herbert Xu wrote:
> On Thu, May 23, 2024 at 12:53:04PM +0300, Jarkko Sakkinen wrote:
> >
> > Just throwing something because came to mind, not a serious suggestion.
> > 
> > In crypto_larval_lookup I see statements like this:
> > 
> > 	request_module("crypto-%s", name);
> > 
> > You could potentially bake up a section/table to vmlinux which would
> > have entries like:
> > 
> > 	"module name", 1/0
> > 
> > '1' would mean built-in. Then for early randomness use only stuff
> > that is built-in.
>
> This early random stuff is obsolete not just because we have a
> kernel thread doing the same thing, but moreover random.c itself
> has been modified so that it is no longer starved of entropy on
> startup.  There is no reason to feed any early randomness.

As a feature that would still sometimes nice to have. I've
sometimes wished there was "lsmod -b" or similar to display
built-in stuff ;-)

So overally I think it was good to have at least documented
here... 

BR, Jarkko