Re: [PATCH v27 12/12] LRNG - add power-on and runtime self-tests

Randy Dunlap
2020-01-10T00:23:26Z

Hi,

On 1/9/20 12:35 AM, Stephan Müller wrote:

> ---
> 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
>
> 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
>
> If unsure, say N.
>
> +config LRNG_SELFTEST
> + bool "Enable power-on and on-demand self-tests"
> + help
> + The power-on self tests are executed during boot time

self-tests

> + 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
> +
> endif # LRNG

--
~Randy