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 0D327CD4851 for ; Thu, 14 May 2026 14:23:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: 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=bx49Ai5uglXPY25/ogD6GrHD4ssoSi4s3kBi1Nl6WAU=; b=H2NxO7BoUa/UqCmE3lIfFvmm/b PjuDh9GJybEGyNbw4aL7XsehT5Ql5sNG8xuTtZnnCMqza+EoEcekdPpSA7NiN5tjVsgtjZUj2q5vB 9nolDPIEMyD/0Hf2s2Tp7eJUu+NByMdz7ELuC66xEDYOLYOpAGlHF83aEa182SbFbxa5CJlhPvScL LnK/E+vmwMQDJ5TnDqzWvXrZhkmzRJ4poZZ28atvWA5iYk7Zq8gtB2jEEUhFKJlHzOX0Qg+0tNDvY zdPRZp9ZTOacj7HC4UHA8X3heTtSUw+JU44Se3DHxE4/KQWmgdx1FRT0TNDgAWqqA8/NjF4WZEd7W CUlB0NTA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wNWyO-00000005hqE-0Bhf; Thu, 14 May 2026 14:23:36 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wNWyM-00000005hpY-07Fc for linux-arm-kernel@lists.infradead.org; Thu, 14 May 2026 14:23:35 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 5C6E843D36; Thu, 14 May 2026 14:23:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC9E8C2BCB3; Thu, 14 May 2026 14:23:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778768613; bh=7+KfuItc51dd0LgVeL7B8K3Fa2QB8mL6r1zvFHBEokM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=TEa3Q23/kb8++ZH5laxDmB7koGLzc5d3hLyWi/4sPnSaY5xxwI0yg6PwK7gUBIQqK TeH9lNCg2iRnwNINlqm7LZvUKXCHHiJLiwSPHQU+tGU7H7QE8QzLoZJkofzlJn77MR wBBsbwfeHVKJ6YLNIQIKkhL1Bexmhp1kwkVQ7tQY= Date: Thu, 14 May 2026 16:23:37 +0200 From: Greg KH To: Catalin Marinas Cc: Suzuki K Poulose , "Aneesh Kumar K.V (Arm)" , linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jeremy Linton , Jonathan Cameron , Lorenzo Pieralisi , Mark Rutland , Sudeep Holla , Will Deacon , Steven Price Subject: Re: [PATCH v5 1/3] firmware: smccc: coco: Manage arm-smccc platform device and CCA auxiliary drivers Message-ID: <2026051431-untainted-gallon-4317@gregkh> References: <20260514094030.42495-1-aneesh.kumar@kernel.org> <20260514094030.42495-2-aneesh.kumar@kernel.org> <0c88bcee-65b5-4328-87e6-e1c714c3d1ca@arm.com> <2026051420-amusement-drove-73e6@gregkh> <2026051445-magician-coffee-962f@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260514_072334_084206_E8CE4FB6 X-CRM114-Status: GOOD ( 20.13 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, May 14, 2026 at 02:46:11PM +0100, Catalin Marinas wrote: > On Thu, May 14, 2026 at 03:25:34PM +0200, Greg Kroah-Hartman wrote: > > On Thu, May 14, 2026 at 02:19:19PM +0100, Catalin Marinas wrote: > > > On Thu, May 14, 2026 at 02:55:48PM +0200, Greg Kroah-Hartman wrote: > > > > On Thu, May 14, 2026 at 12:04:13PM +0100, Suzuki K Poulose wrote: > > > > > On 14/05/2026 10:40, Aneesh Kumar K.V (Arm) wrote: > > > > > > Make the SMCCC driver responsible for registering the arm-smccc platform > > > > > > device and after confirming the relevant SMCCC function IDs, create > > > > > > the arm_cca_guest auxiliary device. > > > > > > > > > > > > > > > > There are a few changes squashed in to this patch. Please could we > > > > > split the patch in the following order ? > > > > > > > > > > 1. Add platform device for arm-smccc > > > > > > > > Do not make any more "fake" platform devices please. > > > > > > > > > 2. Move TRNG to Auxilliary Device - (Even though it is a later patch, move > > > > > it before the RSI changes) > > > > > > > > No, move it to the faux api please. > > > > > > So should we end up with: > > > > > > /sys/devices/faux/arm-smccc/ > > > smccc_trng/ > > > arm-rsi-dev/ > > > > What types are these child devices? Also faux ones? > > They'd also be faux devices with this structure (in practice they are > firmware interfaces that may be backed by some hardware like in the TRNG > case, though not directly accessible to Linux). Great, seems sane to me!