From: Andy Lutomirski <luto@amacapital.net>
To: Torsten Duwe <duwe@lst.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>, "Theodore Ts'o" <tytso@mit.edu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Matt Mackall <mpm@selenic.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Arnd Bergmann <arnd@arndb.de>,
Rusty Russell <rusty@rustcorp.com.au>,
Satoru Takeuchi <satoru.takeuchi@gmail.com>,
ingo.tuchscherer@de.ibm.com,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Hans-Georg Markgraf <MGRF@de.ibm.com>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Joe Perches <joe@perches.com>
Subject: Re: [PATCH v3 03/03]: hwrng: khwrngd derating per device
Date: Mon, 14 Apr 2014 09:41:10 -0700 [thread overview]
Message-ID: <CALCETrUmFdrGExKB+tKSMVK1yWAw6KWU1tpgjnoFe=+XhJdtTw@mail.gmail.com> (raw)
In-Reply-To: <20140414160653.GC29351@lst.de>
On Mon, Apr 14, 2014 at 9:06 AM, Torsten Duwe <duwe@lst.de> wrote:
>
> This patch introduces a derating factor to struct hwrng for
> the random bits going into the kernel input pool, and a common
> default derating for drivers which do not specify one.
>
> Signed-off-by: Torsten Duwe <duwe@suse.de>
>
> ---
> drivers/char/hw_random/core.c | 11 ++++++++++-
> include/linux/hw_random.h | 3 +++
> 2 files changed, 13 insertions(+), 1 deletion(-)
>
> --- linux/include/linux/hw_random.h.orig
> +++ linux/include/linux/hw_random.h
> @@ -29,6 +29,8 @@
> * @read: New API. drivers can fill up to max bytes of data
> * into the buffer. The buffer is aligned for any type.
> * @priv: Private data, for use by the RNG driver.
> + * @derating: Estimation of true entropy in RNG's bitstream
> + * (per mill).
I'll bikeshed again: this is a rating, not a *de*rating. Higher =
more confidence, at least assuming the comment is right.
--Andy
next prev parent reply other threads:[~2014-04-14 16:41 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-21 14:29 [PATCH v2 00/03]: khwrngd Torsten Duwe
2014-03-21 14:32 ` [Patch v2 01/03]: provide an injection point for pure hardware randomness Torsten Duwe
2014-03-21 14:33 ` [PATCH v2 02/03]: hwrng: create filler thread Torsten Duwe
2014-03-27 0:50 ` Andy Lutomirski
2014-03-27 1:03 ` H. Peter Anvin
2014-03-27 1:11 ` Andy Lutomirski
2014-03-27 1:55 ` H. Peter Anvin
2014-03-27 4:47 ` H. Peter Anvin
2014-03-27 15:03 ` Torsten Duwe
2014-03-27 16:06 ` Andy Lutomirski
2014-03-27 14:54 ` Torsten Duwe
2014-03-27 15:47 ` Andy Lutomirski
2014-04-14 16:02 ` [PATCH v3 00/03]: hwrng: an in-kernel rngd Torsten Duwe
2014-04-14 16:04 ` [PATCH v3 01/03]: hwrng: provide an injection point for pure hardware randomness Torsten Duwe
2014-04-14 16:05 ` [PATCH v3 02/03]: hwrng: create filler thread Torsten Duwe
2014-04-14 16:06 ` [PATCH v3 03/03]: hwrng: khwrngd derating per device Torsten Duwe
2014-04-14 16:41 ` Andy Lutomirski [this message]
2014-04-15 8:51 ` Torsten Duwe
2014-04-15 16:53 ` Andy Lutomirski
2014-05-27 13:41 ` [PATCH v5 00/03]: hwrng: an in-kernel rngd Torsten Duwe
2014-05-27 13:44 ` [Patch 01/03]: provide an injection point for pure hardware randomness Torsten Duwe
2014-05-27 13:45 ` [Patch v5 02/03]: hwrng: create filler thread Torsten Duwe
2014-05-27 13:46 ` [Patch v5 03/03]: hwrng: khwrngd derating per device Torsten Duwe
2014-05-27 14:11 ` [Patch v5.1 " Torsten Duwe
2014-06-12 1:24 ` H. Peter Anvin
2014-06-12 10:09 ` Torsten Duwe
2014-06-14 2:40 ` Theodore Ts'o
2014-06-14 2:44 ` H. Peter Anvin
2014-06-15 5:11 ` Theodore Ts'o
2014-06-16 7:31 ` Torsten Duwe
2014-06-16 11:22 ` Theodore Ts'o
2014-06-16 14:07 ` Torsten Duwe
2014-06-16 14:40 ` Theodore Ts'o
[not found] ` <20140616141444.GB1744@suse.de>
[not found] ` <20140616142812.GB19387@thunk.org>
2014-07-11 13:43 ` Ingo Tuchscherer
2014-07-11 14:42 ` Theodore Ts'o
2014-04-14 16:09 ` [PATCH v3 00/03]: hwrng: an in-kernel rngd H. Peter Anvin
2014-04-14 16:24 ` Torsten Duwe
2014-04-14 16:29 ` H. Peter Anvin
2014-04-14 16:43 ` Andy Lutomirski
2014-04-14 16:27 ` [PATCH v4 03/03]: hwrng: khwrngd derating per device Torsten Duwe
2014-03-21 14:34 ` [PATCH v2 " Torsten Duwe
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