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 22B96C4332F for ; Tue, 15 Nov 2022 10:54:01 +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=TbKHwl1onauPY8AspfzQDCtbVO/aqLslImQrTOy1EfU=; b=qxa3TckL8kdfRhj69tObLpMwCW YjlMsPeIjrG7NRyT1w/jre71LV7mZiBUT/SXPyClcXsjveSYj/h1/ZKsyz47UyBm30j6NKhvj4o/A 9jyAEtGnZ+ECB6UsDcDIPQ4ThWduqRMu1P6wbdiqLYXBeBrr9XU9t0LO0O7hiPICn+4YSVYEifbSq LHzHzu9zrX+BNH1yr7uK2SfMyQlcNGOWYU9AHI/OwFg/qtM2FT6U/wxWVVdd5/IAWFgY6tSvKiEIA dAsbAzA/j4ULCYxf2KScKE9Jx8gRAVfHmFU6BE7rCDL8OO94H1SG/S+JxVFTOYK9X8L+Mk7QziNo/ eu+6Nzag==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1outYo-00ABlr-EE; Tue, 15 Nov 2022 10:52:58 +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 1outPC-00A51w-CG for linux-arm-kernel@lists.infradead.org; Tue, 15 Nov 2022 10:43:03 +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 B18A6615FA; Tue, 15 Nov 2022 10:43:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61172C433C1; Tue, 15 Nov 2022 10:43:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668508981; bh=FdLHg0+QkLHO0CSCgXVj6BYz+KNqo66obGe/R3Q3TA4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NjCshn1DuYmFW9gtBK+MLvMj94WZISt92Udv9BJAGCkg2iHrkHSCkZCiPd+BB1g93 EXzOOUStlT63Or5Rim/GitNvdpBRV3Q04RTqBAUHCP5eenC3EEHwSVqQxrJPG1s5zN TVC/Tlb8Lc9TB5NgAJoVHpijJvIuPLlsgGkLAZdiDQzyiroJDGWx3sxcMcomQH0y+m xZYfkkpHSoVIhvzXfrCjgqQzGolmDsv/c/uvCDTX/wyQPi0r+vwhiTHGyfQYw7Chw1 6wLz1CoJ3DYbqNuik7LuFdZngLpGx/2YO28i090Qu/vGriWV5jAqe+16ansxphtjvO 0MmCUAHVlUarQ== Date: Tue, 15 Nov 2022 10:42:57 +0000 From: Mark Brown To: Catalin Marinas Cc: Christophe Fergeau , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v10 09/39] arm64/sme: Basic enumeration support Message-ID: References: <20220126152749.233712-10-broonie@kernel.org> <20221108163001.279649-1-cfergeau@redhat.com> MIME-Version: 1.0 In-Reply-To: X-Cookie: Ego sum ens omnipotens. X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221115_024302_486285_07142409 X-CRM114-Status: GOOD ( 16.28 ) 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="===============0282258123173792082==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============0282258123173792082== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="4OFhwBd0cy05fdk0" Content-Disposition: inline --4OFhwBd0cy05fdk0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Nov 14, 2022 at 02:08:45PM +0000, Catalin Marinas wrote: > I'm not even sure how we could work around this in the kernel. There's > no meaningful MIDR to probe, nor do we know which macOS version it is > running on. The best we could do is put some #ifdef CONFIG_ARM64_SME > around the ID_AA64SMFR0_EL1 access but defconfig and most distros would > probably have the option on anyway. There should be some firmware information we have access to early enough, hopefully some of it might allow us to determine if it's an affected system but I'd expect that by the time we figure something out and deploy it most users will have upgraded anyway. --4OFhwBd0cy05fdk0 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmNzbTAACgkQJNaLcl1U h9B2+wf+OXI50tJT7/vZ7jf2PzDD9wLfrFqOSbZPUHEqdlT8dlFF0s+jsqfNCvgX N3xV5z/Bz+ckHh1JP6ALHxN4clPe3PsKh7W//VPs7vdbxxpgZK6AXiNPTPHuHOTz NuzjhMSBvcj+N24rjPsP8PM4sgHBWNSYKscnjofYuQnm60M/hIUySJUke3zrFdzW ZXTmBG2tgoBKg3VMtbekQYsh1KuYuuClVz4twr0rrKGyQ5P90sikb4j41J77CHYH vnfEDfYH2pjLDc3pkyZeJMDjwX8fkjHSH6siFF+ZV2Tck/vtLqMD8H50KwBz3D9q pat3jZAcVLG+Ux3AI2QvQw667KrxTA== =jiBf -----END PGP SIGNATURE----- --4OFhwBd0cy05fdk0-- --===============0282258123173792082== 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 --===============0282258123173792082==--