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 74D98C433FE for ; Thu, 29 Sep 2022 17:56:00 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MEhLqHgdEsk1u9QNxvYbSK06VGx+4DbPg8/z7gz/Irs=; b=wnRy35SbQIeioO BCyrApv6axyQ/Ddro7MkuZotRXMQZVMGaJldEFImykBVAWWqKRC/O3kxbFEgBM1F0kybKvvKjxzR2 a5gyHw7BydU7Fm85ID65fl/tPJVlK079MuxNPM9ps62kry4IgT0G7o8ZUtFxwjAaCKIDyD+dLvn5j bhM1/CJPjPwlWMOo+TRojqG4XnL3ZU63lrJHyIXqvHmbucAWd+RvIfEVZ+oqXVnJtUf7cRNk+8fDY 1TIE0GDFL1uB1F7ryUSpN2RQ+Qg8MOVA/3qkCgvgj+VLvyjsCJU4p0aEehuoUABduFqDTpQ84YSbf GK0Y07/9zCb4892DAJuQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1odxkV-004knC-2y; Thu, 29 Sep 2022 17:55:03 +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 1odxk6-004ka6-R6 for linux-arm-kernel@lists.infradead.org; Thu, 29 Sep 2022 17:54:40 +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 2978A620E8; Thu, 29 Sep 2022 17:54:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6122DC433D6; Thu, 29 Sep 2022 17:54:36 +0000 (UTC) From: Catalin Marinas To: Shuah Khan , Mark Brown , Will Deacon Cc: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] kselftest/arm64: Don't enable v8.5 for MTE selftest builds Date: Thu, 29 Sep 2022 18:54:34 +0100 Message-Id: <166447406678.3004405.3029448965221717837.b4-ty@arm.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220928154517.173108-1-broonie@kernel.org> References: <20220928154517.173108-1-broonie@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220929_105438_971010_F670AEF3 X-CRM114-Status: GOOD ( 15.74 ) 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: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 28 Sep 2022 16:45:17 +0100, Mark Brown wrote: > Currently we set -march=armv8.5+memtag when building the MTE selftests, > allowing the compiler to emit v8.5 and MTE instructions for anything it > generates. This means that we may get code that will generate SIGILLs when > run on older systems rather than skipping on non-MTE systems as should be > the case. Most toolchains don't select any incompatible instructions but > I have seen some reports which suggest that some may be appearing which do > so. This is also potentially problematic in that if the compiler chooses to > emit any MTE instructions for the C code it may interfere with the MTE > usage we are trying to test. > > [...] Applied to arm64 (for-next/kselftest), thanks! [1/1] kselftest/arm64: Don't enable v8.5 for MTE selftest builds https://git.kernel.org/arm64/c/55c8a987dd73 -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel