From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1DA0C4320A for ; Mon, 2 Aug 2021 10:40:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CD05860E76 for ; Mon, 2 Aug 2021 10:40:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233309AbhHBKlE (ORCPT ); Mon, 2 Aug 2021 06:41:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:38028 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231854AbhHBKlD (ORCPT ); Mon, 2 Aug 2021 06:41:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2B92060F9E; Mon, 2 Aug 2021 10:40:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1627900854; bh=DSvgIx4J8JKOg4XXggMVa7s1UrkqGDWBAGiVCWCSJ4I=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aHzmvqtcEqLSPKqPm3+sAmkHab6hc7Lq6m3VR1X5GlwJzz995Dx7KneRxEuU/SDcc kZTGSj4U3lXFkEDPsoU8yrtRdulO8dguNtU4tPI/QwgIo87U+MNjC70t9wLdodwYf8 kOgwHhv8ZTIPApwMnspvIu8B+WS8i3RXEXJjSJ6s90g+2GLT6RZjsHiON4Y6zy+Ljr 0BdzHzlSM2HUl4jLAkHtFG8EvTRlJevScSITi4l7hfxeZ3Cq/PW2It7dUvM9iPEv4e xm+KqVVmBf4LEZHvGbHXdxUEHQ3sGhiZnl4BsH90z4/Kfub4lUWSOcHoCbjuEyxcPP fxZkeMq87satg== Date: Mon, 2 Aug 2021 11:40:40 +0100 From: Mark Brown To: Andre Przywara Cc: Matt Mackall , Herbert Xu , Mark Rutland , Lorenzo Pieralisi , Sudeep Holla , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Benjamin Herrenschmidt , Ard Biesheuvel , Will Deacon , Ali Saidi , Jon Nettleton Subject: Re: [PATCH v4 0/2] hwrng: Add Arm SMCCC TRNG based driver Message-ID: <20210802104040.GA4668@sirena.org.uk> References: <20210731204845.21196-1-andre.przywara@arm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="IS0zKkzwUGydFO0o" Content-Disposition: inline In-Reply-To: <20210731204845.21196-1-andre.przywara@arm.com> X-Cookie: There's only one everything. User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --IS0zKkzwUGydFO0o Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sat, Jul 31, 2021 at 09:48:43PM +0100, Andre Przywara wrote: > The "Arm True Random Number Generator Firmware Interface"[1] provides > an SMCCC based interface to a true hardware random number generator. > So far we are using that in arch_get_random_seed(), but it might be > useful to expose the entropy through the /dev/hwrng device as well. This > allows to assess the quality of the implementation, by using "rngtest" > from the rng-tools package, for example. Reviewed-by: Mark Brown --IS0zKkzwUGydFO0o Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmEHy6gACgkQJNaLcl1U h9Bqywf9EVanqIq47OwESeX1a5x5DLZ5KBiLRnOiL75URea8aWsz72lG6O6A9tBr Zf4cPpH0ly00lyarQ6K559N9vZm5NAP9rGobOBsT8WxT4XCOVaAxMdxmfmsTNoFs hZXlStAh0OcbH5vpYxmx5FA0wqkwco2rhzQmCzq/6tRoheMajWt5DBRcx7SNlH5H AyB92bvnqihN4PnXInCFUNE+Dhzfd5bCqniB/sOBmIAOsg9fTtjdD/E/NVLGTgGN lTLJI7Pt8KHv5P7/7FC/Nwb3IaCSVJfNinYdEo83ugvvNcd96dw92dr4lWXx1QRe svHUca46A8lsLiJTWL/7dh3yIoZ9Fw== =3gNq -----END PGP SIGNATURE----- --IS0zKkzwUGydFO0o--