[PATCH 0/3] crypto: jitter - Offer compile-time options

From: "Stephan Müller" <smueller@chronox.de>
To: herbert@gondor.apana.org.au
Cc: linux-crypto@vger.kernel.org, "Ospan, Abylay" <aospan@amazon.com>
Subject: [PATCH 0/3] crypto: jitter - Offer compile-time options
Date: Thu, 21 Sep 2023 13:47:32 +0200	[thread overview]
Message-ID: <2700818.mvXUDI8C0e@positron.chronox.de> (raw)

Hi,

the following patchset offers a set of compile-time options to
accommodate different hardware with different entropy rates implied
in their timers. This allows configuring the Jitter RNG in systems
which exhibits insufficient entropy with the default parameters. The
default parameters defined by the patches, however, are identical to
the existing code and thus do not alter the Jitter RNG behavior.

The first patch sets the state by allowing the configuration of
different oversampling rates. The second patch allows the configuration
of different memory sizes and the third allows the configuration
of differnet oversampling rates.

The update of the power up test with the first patch also addresses
reports that the Jitter RNG did not initialize due to it detected
insufficient entropy.

Stephan Mueller (3):
  crypto: jitter - add RCT/APT support for different OSRs
  crypto: jitter - Allow configuration of memory size
  crypto: jitter - Allow configuration of oversampling rate

 crypto/Kconfig               |  60 +++++++++
 crypto/jitterentropy-kcapi.c |  17 ++-
 crypto/jitterentropy.c       | 249 ++++++++++++++++++-----------------
 crypto/jitterentropy.h       |   5 +-
 4 files changed, 207 insertions(+), 124 deletions(-)

-- 
2.42.0