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From:   Stephan Mueller <smueller@chronox.de>
To:     Randy Dunlap <rdunlap@infradead.org>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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        "Ahmed S. Darwish" <darwish.07@gmail.com>,
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        Matthew Garrett <mjg59@srcf.ucam.org>,
        Vito Caputo <vcaputo@pengaru.com>,
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        Florian Weimer <fweimer@redhat.com>,
        Lennart Poettering <mzxreary@0pointer.de>,
        Nicolai Stange <nstange@suse.de>,
        "Peter, Matthias" <matthias.peter@bsi.bund.de>,
        Marcelo Henrique Cerri <marcelo.cerri@canonical.com>,
        Roman Drahtmueller <draht@schaltsekun.de>,
        Neil Horman <nhorman@redhat.com>,
        Julia Lawall <julia.lawall@inria.fr>
Subject: Re: [PATCH v27 12/12] LRNG - add power-on and runtime self-tests
Date:   Fri, 10 Jan 2020 08:48:22 +0100
Message-ID: <4114256.cnP6sY5xnJ@tauon.chronox.de>
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References: <6157374.ptSnyUpaCn@positron.chronox.de> <2355906.JbblJTOqSk@positron.chronox.de> <2f225250-c1e1-c6e1-026c-9c63853ab7d1@infradead.org>
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Am Freitag, 10. Januar 2020, 01:22:51 CET schrieb Randy Dunlap:

Hi Randy,

> Hi,
>=20
> On 1/9/20 12:35 AM, Stephan M=FCller wrote:
> > ---
> >=20
> >  drivers/char/lrng/Kconfig         |  25 ++
> >  drivers/char/lrng/Makefile        |   1 +
> >  drivers/char/lrng/lrng_selftest.c | 418 ++++++++++++++++++++++++++++++
> >  3 files changed, 444 insertions(+)
> >  create mode 100644 drivers/char/lrng/lrng_selftest.c
> >=20
> > diff --git a/drivers/char/lrng/Kconfig b/drivers/char/lrng/Kconfig
> > index 394066aa5a86..e9827e7df715 100644
> > --- a/drivers/char/lrng/Kconfig
> > +++ b/drivers/char/lrng/Kconfig
> > @@ -175,4 +175,29 @@ config LRNG_TESTING
> >=20
> >  	  If unsure, say N.
> >=20
> > +config LRNG_SELFTEST
> > +	bool "Enable power-on and on-demand self-tests"
> > +	help
> > +	  The power-on self tests are executed during boot time
>=20
> 	               self-tests

=46ixed in all occurrences. Thank you.
>=20
> > +	  covering the ChaCha20 DRNG, the LFSR processing and the
> > +	  time stamp management of the LRNG.
> > +
> > +	  The on-demand self-tests are triggered by writing any
> > +	  value into the SysFS file selftest_status. At the same
> > +	  time, when reading this file, the test status is
> > +	  returned. A zero indicates that all tests were executed
> > +	  successfully.
> > +
> > +	  If unsure, say Y.
> > +
> > +if LRNG_SELFTEST
> > +
> > +config LRNG_SELFTEST_PANIC
> > +	bool "Panic the kernel upon self-test failure"
> > +	help
> > +	  If the option is enabled, the kernel is terminated if an
> > +	  LRNG power-on self-test failure is detected.
> > +
> > +endif # LRNG_SELFTEST
> > +
> >=20
> >  endif # LRNG


Ciao
Stephan