Re: [PATCH v6 0/5] ARM: arm64: Add SMCCC TRNG entropy service

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On Wed, Jan 20, 2021 at 02:15:59PM +0100, Ard Biesheuvel wrote:
> On Wed, 20 Jan 2021 at 14:01, Will Deacon <will@xxxxxxxxxx> wrote:
> >
> > On Wed, 6 Jan 2021 10:34:48 +0000, Andre Przywara wrote:
> > > a fix to v5, now *really* fixing the wrong priority of SMCCC vs. RNDR
> > > in arch_get_random_seed_long_early(). Apologies for messing this up
> > > in v5 and thanks to broonie for being on the watch!
> > >
> > > Will, Catalin: it would be much appreciated if you could consider taking
> > > patch 1/5. This contains the common definitions, and is a prerequisite
> > > for every other patch, although they are somewhat independent and likely
> > > will need to go through different subsystems.
> > >
> > > [...]
> >
> > Applied the first patch only to arm64 (for-next/rng), thanks!
> >
> > [1/5] firmware: smccc: Add SMCCC TRNG function call IDs
> >       https://git.kernel.org/arm64/c/67c6bb56b649
> >
> > What's the plan for the rest of the series, and I think the related
> > change over at [1]?
> >
> 
> Given that Ted seems to have lost interest in /dev/random patches, I
> was hoping [1] could be taken via the arm64 tree instead. Without this
> patch, I don't think we should expose the SMCCC RNG interface via
> arch_get_random_seed(), given how insanely often it will be called in
> that case.

Ok, let's give that a shot -- I'll additionally pick patches 2 and 4 out
of this series, and merge in the /dev/random change on its own branch in
case there are any late objections.

Will
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