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=-12.8 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=ham 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 5E6BDC433DB for ; Wed, 6 Jan 2021 13:11:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2167123102 for ; Wed, 6 Jan 2021 13:11:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727016AbhAFNLs (ORCPT ); Wed, 6 Jan 2021 08:11:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:39072 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726930AbhAFNLq (ORCPT ); Wed, 6 Jan 2021 08:11:46 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1F7AF22EBD; Wed, 6 Jan 2021 13:11:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1609938665; bh=79wddeIkl6fxtztJZXYazG9ptPsHlnjqs/ligBQXeMs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hOzTNsUZRihG5hwg4TULYCcxSKgCU6r010mu39TRym7YLpOhDKFtVfI3v4cU1TtEo J6MKaaqzwtTHyaOLn4auZKqaFjzotTiWHYuPNh2LGtBrEWPwSvNFWWSEK5zy4grMy2 kuubSjxLqyIy9i7lpG2q7XpMUkJliW3sGOUGSgeHgA43lBDEXjhufwIGhcUrBlsgsR EMyjD8YWQBiaFQLlVnPwlXPvtEa9zzME1+6S3n2IwzrAYiKTUx2pD7KiIx+n8iscQp 5l5tY3A8+2pi7h5RcuBjluaHZYxZ9IOCyGA6jHVZxcE/cNLSGq3FSmiKvpX5ZtS6pH THoMKkqSI5fzA== Date: Wed, 6 Jan 2021 13:10:37 +0000 From: Mark Brown To: Andre Przywara Cc: Will Deacon , Catalin Marinas , Ard Biesheuvel , Russell King , Marc Zyngier , Theodore Ts'o , Sudeep Holla , Mark Rutland , Lorenzo Pieralisi , Linus Walleij , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 4/5] arm64: Add support for SMCCC TRNG entropy source Message-ID: <20210106131037.GD4752@sirena.org.uk> References: <20210106103453.152275-1-andre.przywara@arm.com> <20210106103453.152275-5-andre.przywara@arm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="UfEAyuTBtIjiZzX6" Content-Disposition: inline In-Reply-To: <20210106103453.152275-5-andre.przywara@arm.com> X-Cookie: Happy feast of the pig! User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --UfEAyuTBtIjiZzX6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jan 06, 2021 at 10:34:52AM +0000, Andre Przywara wrote: > The ARM architected TRNG firmware interface, described in ARM spec > DEN0098, defines an ARM SMCCC based interface to a true random number > generator, provided by firmware. > This can be discovered via the SMCCC >=v1.1 interface, and provides > up to 192 bits of entropy per call. Reviewed-by: Mark Brown --UfEAyuTBtIjiZzX6 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl/1tswACgkQJNaLcl1U h9AU0gf/WEpGA7/Gqcj19WM0HyGcWr3K5f9j/Oet7jlOJd3xp5/OK/lHnRGxQ3UT u51f8W2bmXF6OQ645seYsM+hEkcDJq+VFk+/wFE2w7TORZRLs1r9tFb6KrWrOCt2 A6ogtATKDYDwQeYIzf5+Ed3h/BP1Kgs3bPKo65hBulxWZUnRpIm3JlZegTGYC7hz IXW3Ok1pRiyBbzBSR90NC8MW3TfPrBQEZEz8cmdSwu9ft1uLJqFumPB7nFVv747q lCno+cS55Ikyj2OrdzQTLmsIYYutBgfd5yP9h3LHRIXZz5NC6eWlkKMqx/gL/sTO XHQHqe3gdxNQ5gduTzONG4LqoOrw6Q== =FSJJ -----END PGP SIGNATURE----- --UfEAyuTBtIjiZzX6--