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Wed, 28 Jul 2021 10:05:53 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8gRg-000Kij-L3; Wed, 28 Jul 2021 10:05:49 +0000 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 6595060E78; Wed, 28 Jul 2021 10:05:48 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1m8gRe-001VHO-Bj; Wed, 28 Jul 2021 11:05:46 +0100 Date: Wed, 28 Jul 2021 11:05:45 +0100 Message-ID: <87zgu6da86.wl-maz@kernel.org> From: Marc Zyngier To: Suzuki K Poulose Cc: yee.lee@mediatek.com, linux-kernel@vger.kernel.org, nicholas.Tang@mediatek.com, Kuan-Ying.lee@mediatek.com, chinwen.chang@mediatek.com, Catalin Marinas , Will Deacon , Matthias Brugger , David Brazdil , Mark Rutland , Ionela Voinescu , Amit Daniel Kachhap , Quentin Perret , Andrew Scull , James Morse , Fuad Tabba , "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" , "moderated list:ARM/Mediatek SoC support" Subject: Re: [PATCH 1/1] arm64/cpufeature: Add option to disable mte support In-Reply-To: <88cded87-bc06-4aeb-4996-76a5faa58afe@arm.com> References: <20210728094302.9949-1-yee.lee@mediatek.com> <20210728094302.9949-2-yee.lee@mediatek.com> <88cded87-bc06-4aeb-4996-76a5faa58afe@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: suzuki.poulose@arm.com, yee.lee@mediatek.com, linux-kernel@vger.kernel.org, nicholas.Tang@mediatek.com, Kuan-Ying.lee@mediatek.com, chinwen.chang@mediatek.com, catalin.marinas@arm.com, will@kernel.org, matthias.bgg@gmail.com, dbrazdil@google.com, mark.rutland@arm.com, ionela.voinescu@arm.com, amit.kachhap@arm.com, qperret@google.com, ascull@google.com, james.morse@arm.com, tabba@google.com, linux-arm-kernel@lists.infradead.org, linux-mediatek@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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210728_030548_785999_E73193B4 X-CRM114-Status: GOOD ( 19.01 ) 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 Jul 2021 10:59:24 +0100, Suzuki K Poulose wrote: > > On 28/07/2021 10:42, yee.lee@mediatek.com wrote: > > From: Yee Lee > > > > Add a static key to exapnd the logic of system_supports_mte(). > > This function controls mte enablement in both EL1 and EL0. > > > > The static key, "arm64_mte_support" is default true and can > > be disabled via the early_param. > > Please could we use the id-reg override mechanism and give it > an alias ? > > See : > > arch/arm64/kernel/idreg-override.c > > And could add something along the lines of : > > arm64.nomte Damn, you beat me to it! :D M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel