linux-kernel - Re: Security Random Number Generator support

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Message-ID: <20200603094829.GA7259@bogus>
Date:   Wed, 3 Jun 2020 10:48:40 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Neal Liu <neal.liu@...iatek.com>
Cc:     Marc Zyngier <maz@...nel.org>, Julius Werner <jwerner@...gle.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sean Wang <sean.wang@...nel.org>,
        linux-mediatek@...ts.infradead.org,
        lkml <linux-kernel@...r.kernel.org>,
        wsd_upstream <wsd_upstream@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Matt Mackall <mpm@...enic.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Jose Marinho <Jose.Marinho@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Crystal Guo (郭晶) <Crystal.Guo@...iatek.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: Security Random Number Generator support

+ Jose

On Wed, Jun 03, 2020 at 03:54:17PM +0800, Neal Liu wrote:
> On Wed, 2020-06-03 at 08:40 +0100, Marc Zyngier wrote:

[...]

> > The idea is simply to have *one* single ID that caters for all
> > implementations, just like we did for PSCI at the time. This
> > requires ARM to edict a standard, which is what I was referring
> > to above.
> >
> > There is zero benefit in having a platform-dependent ID. It just
> > pointlessly increases complexity, and means we cannot use the RNG
> > before the firmware tables are available (yes, we need it that
> > early).
> >
>
> Do you know which ARM expert could edict this standard?
> Or is there any chance that we can make one? And be reviewed by
> maintainers?
>

Jose Marinho is working on the spec, may be he has more updates on the
timeline.

--
Regards,
Sudeep