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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no 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 50F3FC2D0A3 for ; Fri, 6 Nov 2020 15:35:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E64AD22203 for ; Fri, 6 Nov 2020 15:35:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604676917; bh=paZN7AmMflubbnBs/ZRVSzsc+RrX8RA/W7ofJ5ThUB4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=JKfr0bW0ILSYNOX8RnJcb92Umug2+Bs9s/NpxB9Gs+Xp14XI/rRgyNKq/wOXW8qtY pEzAHPytgqCVUzbLosmnG+wiWYrPVRO68GshdMgNWCCC3PkSvErMUFxz/XIPe8tslb E6mFHc1y0edoXf+z2aRlDjmdu1IQyj6EEMbht+AM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727557AbgKFPfQ (ORCPT ); Fri, 6 Nov 2020 10:35:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:51764 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726422AbgKFPfP (ORCPT ); Fri, 6 Nov 2020 10:35:15 -0500 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C7CB2208C7; Fri, 6 Nov 2020 15:35:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604676914; bh=paZN7AmMflubbnBs/ZRVSzsc+RrX8RA/W7ofJ5ThUB4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=C/vLytVCM05e1EYByu8kmhzsDIqP+J60oRAVf5w8r/c+cO4NuYXpPOrI9VBJuwAPv NxpwfRGFFH9zfC7W+h6pzbrx6TGo2RMsVwoPPFO51fmX1iygQvk7L/B5nZtEsepCaI qxWEvsSRPSSfVAsVGIsKsB+FAQ/gkVJsHZbLtTBs= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1kb3lg-008Ej3-NW; Fri, 06 Nov 2020 15:35:12 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 06 Nov 2020 15:35:12 +0000 From: Marc Zyngier To: Ard Biesheuvel Cc: Andre Przywara , Will Deacon , Catalin Marinas , Russell King , Lorenzo Pieralisi , Linus Walleij , Linux Kernel Mailing List , Mark Brown , Sudeep Holla , kvmarm , Linux ARM Subject: Re: [PATCH v2 3/5] ARM: implement support for SMCCC TRNG entropy source In-Reply-To: References: <20201105125656.25259-1-andre.przywara@arm.com> <20201105125656.25259-4-andre.przywara@arm.com> <7b36daa49c78d60dc788bbb3c9c1bdaa@misterjones.org> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: ardb@kernel.org, andre.przywara@arm.com, will@kernel.org, catalin.marinas@arm.com, linux@armlinux.org.uk, lorenzo.pieralisi@arm.com, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, broonie@kernel.org, sudeep.holla@arm.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-11-06 15:30, Ard Biesheuvel wrote: > On Fri, 6 Nov 2020 at 16:30, Marc Zyngier wrote: [...] >> I don't think this cast is safe. At least not on 64bit. > > True, but this is arch/arm I think the glasses theme becomes recurrent. Apologies for the noise. M. -- Jazz is not dead. It just smells funny...