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 09612C433EF for ; Wed, 2 Mar 2022 16:05:55 +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=2Tb3sUBathcLoGMduJSCm3G45qr25+JCgxJDwIwzvEI=; b=PtNZCew6O14sIywSWHIOPF4KRa 10uiKTLXvMNJymP8hkABXMOB0X9HXfJFdY/+mvdXNBAs8Gh6iNTLF330SxcE9Ljg5ei54eVV5vv6e qFgnElKViZr8wP/+I/cFD33cIwS/E8jjheYkfdIcgwbb/PAy56GgJeHnp5w0o3rVZBkSAYWNUqG7W VeOnGBucPfa5mZ4n3BYLvACdIxlqB4ZzqzmmT4QJ23H/g56/fhMRcEDN722vhv1pZ0P/sGMdFD+G5 G3lT+95J63e2bx2ggmVNZEq8Y8pwiRyq7WD4mqBbU88RQHeY6or33OURistmJrPYUlbsGxTDM9sq/ OLHRNlRw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nPRT6-003HNd-Lr; Wed, 02 Mar 2022 16:04:48 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nPRT3-003HMH-4b for linux-arm-kernel@lists.infradead.org; Wed, 02 Mar 2022 16:04:46 +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 7084C617B4; Wed, 2 Mar 2022 16:04:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3F89C004E1; Wed, 2 Mar 2022 16:04:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646237083; bh=JvIyGtNGUo5s7CVhsVj1R6sAD5lsJ3z7Tz9eAmBhL7M=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Cev/zAk4JzXqGpZqEplHD5L2QeT1NcAo8ZN3AA9/lo//NWoOW3RNuz0PephmJKeq1 LB55AnNOHgC8PSbdsV7Q5OWJCcRLi7Q/qMdn/8p6EMo7N2gdolKqhMCYUooVCaHFLg bhLqgTfS54A9nEdQDuelB7wgNWDa5TyVAD9dBx/DRsaiOfbuAPrqtR+06sb2Gkx4Ut VLJlcYL2oPyDM2Bv5DJRy0c/tV9qfncRAPMXnhCABBm6efYD02MqTvIVi42DKs+cuB 27AZ04vrsA6s+owsdLNGsz92iuW5RIw3wvg12o7Hlbi3ujDis84AJ2xWM+Gi6Gx+Lg QGfN4nx6CYzqw== Date: Wed, 2 Mar 2022 16:04:39 +0000 From: Mark Brown To: Catalin Marinas Cc: Will Deacon , linux-arm-kernel@lists.infradead.org, Mark Rutland Subject: Re: [PATCH] arm64: Don't allow SVE to be used with BROKEN_GAS_INST Message-ID: References: <20220225184045.5502-1-broonie@kernel.org> MIME-Version: 1.0 In-Reply-To: X-Cookie: The sheep died in the wool. X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220302_080445_238595_F48BE408 X-CRM114-Status: GOOD ( 15.68 ) 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="===============4686623710251133549==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============4686623710251133549== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5VlU604RFbAvUPZf" Content-Disposition: inline --5VlU604RFbAvUPZf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Mar 02, 2022 at 01:58:13PM +0000, Catalin Marinas wrote: > It looks like it's not just SVE affected here. A grep for "\.inst\>" > shows a few places in the crypto code as well. How hard is it to use > __emit_inst() in these places? TBH given the indeterminate existance of a userbase I'm not sure it's even worth it - they're for v8.2 instructions and there's arguments being encoded in there so I'd be more inclined to do the same as SVE and shove some dependencies in there for now rather than make those macros even longer. I'd be astonished if there were anyone using a toolchain old enough to have the issue with hardware new enough to be impacted, the fact that we didn't hear about it thus far suggests that there isn't. --5VlU604RFbAvUPZf Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmIflZYACgkQJNaLcl1U h9Abrgf/cNWwWyQH1aNHG2Tgf+6r7GQnND9YOn520rSiDkHErCifLLBOYLNJQfS4 CX65YAPhb11nlw2ZFPY5tEIQvQT/ZSJ/eGe7ApQQVVSAdAzggtKBQWYMUJg/EbRB zX3rLAxLdYXLBwg54dQr6mtvRD62HeHpSaoniaCy4lCs2cD1ZUmA1iBVV7JwjlTd 1nQymgbOigTd4E9YLaBlMRF109CjJRK1bNXkQKuYtraAH5kvNJe5B+u55M7kd/O9 /zkxvY6gVyI5LgOcgsbUftWVUYUFb76dcf2FDzX+/A59Io/0p0+Gkiziseih+7hB gmmp2N/lmISvk+/54nRi/JiJZhWyng== =zMR3 -----END PGP SIGNATURE----- --5VlU604RFbAvUPZf-- --===============4686623710251133549== 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 --===============4686623710251133549==--