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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 16A65C433F5 for ; Thu, 13 Jan 2022 13:41:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=0hcklRnzoPEw9kMjbmWbiu0K0+syOZ5tcvzJRjZDVWs=; b=MajpPvZV5To7B5QwR+cCADGsSn jcEF0HewgoKv5OJhsY1UGmiija2ER9EaU++mwdAp/bE03uLFJp7o+Jcj9/eescfRqpBYDWRO3omOi X0Z7XOZYm29ktEtMj91FEsux8xtIXD30XiFgcSrKB9oIk0pxMmgxKfQ45OnaQXqA4Ta6MTBH68+UB 17PRmR5U0nErOTPqpcfPF8AkFVnQ8FfEexMFAp5gYHFMurPjjjzdLBteMnHQEaHBKnZ8wDN9Eu79/ dMEJckMJk0bVFBVy++FjxxDCcSgVybnFGRHAFnssy8utNJMjtPcq0liPz0f3+i+BhsWF6yeCq8tDt f2c0XpYA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n80KY-0069TG-KR; Thu, 13 Jan 2022 13:39:54 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n80KV-0069SN-GR for linux-arm-kernel@lists.infradead.org; Thu, 13 Jan 2022 13:39:52 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0B43461CDC; Thu, 13 Jan 2022 13:39:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CFB6BC36AE3; Thu, 13 Jan 2022 13:39:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642081190; bh=PGRLT4hsfHw5FSd3m65RBFXxXeigY4ZtsmnybLNEjM8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Zy0VBNu2a48TiPkRg+lHRgJgq2Hd1G1Ck0J/2e2mKwnbTfzniROrz0K+V/C2WmEL3 AEhIlYqD+DAZeAVWC9au+iCnTzkI2V+O0x3mhuh4Ee47zWSz5emIzbRkARQyVDfTiF Qj0yidtQnmkitozMClAmiVmpEbgYQKB1wOSEkSEmmVjv4uJ/EMEpUDuvctdjCz6p4I oOG1J0kpH5S8ck3Nrt6fVumA/GE2C1aunOTXBadD4blDwQ4TaZKo2nbf6E1A52kWIM ezbuwyOpsKymgcgo7bMEIVdwlFbkQc6OoZFpNb/3N/gKmt/w6gGvhZsC0Eg+WSaJt1 YoeylXhmKhwEQ== Date: Thu, 13 Jan 2022 13:39:45 +0000 From: Mark Brown To: Ard Biesheuvel Cc: linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, jason@zx2c4.com, Andre Przywara Subject: Re: [PATCH] arm64: random: implement arch_get_random_int/_long based on RNDR Message-ID: References: <20220113131239.1610455-1-ardb@kernel.org> MIME-Version: 1.0 In-Reply-To: <20220113131239.1610455-1-ardb@kernel.org> X-Cookie: Slow day. Practice crawling. X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220113_053951_607892_62908294 X-CRM114-Status: GOOD ( 12.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============7549657841869904752==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============7549657841869904752== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="VMZpdp+qpb8W6Zh4" Content-Disposition: inline --VMZpdp+qpb8W6Zh4 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jan 13, 2022 at 02:12:39PM +0100, Ard Biesheuvel wrote: > When support for RNDR/RNDRRS was introduced, we elected to only > implement arch_get_random_seed_int/_long(), and back them by RNDR > instead of RNDRRS. This was needed to prevent potential performance > and/or starvation issues resulting from the fact that the /dev/random > driver used to invoke these routines on various hot paths. Reviewed-by: Mark Brown --VMZpdp+qpb8W6Zh4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmHgK6AACgkQJNaLcl1U h9Cg6Af9F3tRoZm6voIeJTMt8TplHTv7WXMoVrGuCRs62KM3fRaYcs10wKmj9E2t k8A+bWvSptlcXlN2FNOgo4gtrMfg4vMeHQczNlYOTmArkd7QbTJ5YnstlGjKJS6J bWTAHrgQWLexxp8ONk76iZ7V1T8xNqTqUTTyaRTjW1WdgAoadDRUs/Xec7ZGefZK beg7KB3E7CpBq+26P3VR6fz9hF8yz51Dy+4qwO61TsX0nIwE0i1eGyVogyhGxL+E 2sQopymfO8rnBRMnpOS2PRVVfyHgaDnPjstHpCLq5l4kSux0kh21lqOiV/rR6EDV roMe93OUny6oOxx8oBQ4HKE/zAAIEg== =XEpT -----END PGP SIGNATURE----- --VMZpdp+qpb8W6Zh4-- --===============7549657841869904752== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============7549657841869904752==--