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 X-Spam-Level: X-Spam-Status: No, score=-10.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EF67C433E0 for ; Mon, 25 Jan 2021 12:21:25 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DACB722EBF for ; Mon, 25 Jan 2021 12:21:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DACB722EBF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yHZS56UiBsjH2YrO9BkVW/YXCW50EKHKj6RMwrIGHNE=; b=rbmGTRjQP2JYZZyMKa5v7vzFK +pVzMeYzB8YMl3tox+0tih7LZSp8P5RW6Q3pRfB3AQ/1S8LcghBRUJbx9spGgOfzwhf4MYlJBggfe U5BNdpTxVA5VzlxWYaEyFfN0cMvtffSU1qBamixdAZPYYmjE4SmEQoMsJ4vatbkYjm4XlTPJvkzin s+YlQ+ygGEdSDetrLdT73NUOfq/8ipm6xH3S1LmSH4Emdvn9nB2J2QCmXaz04M3UJvOQKf7HmY++F /e8IPTziZ8U3nysd0bXvBknhc37lX0PjhNtsyYkfRgpthGXyDbi9jHoTdJ4C06VgONHYqIwO6uwd9 ZJOIUUWFw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l40mU-00060R-NP; Mon, 25 Jan 2021 12:15:42 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l40mR-0005zY-9o for linux-arm-kernel@lists.infradead.org; Mon, 25 Jan 2021 12:15:40 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id C16F42231F; Mon, 25 Jan 2021 12:15:35 +0000 (UTC) Date: Mon, 25 Jan 2021 12:15:33 +0000 From: Catalin Marinas To: Marc Zyngier Subject: Re: [PATCH v5 09/21] arm64: cpufeature: Add global feature override facility Message-ID: <20210125121532.GE25360@gaia> References: <20210125105019.2946057-1-maz@kernel.org> <20210125105019.2946057-10-maz@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210125105019.2946057-10-maz@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210125_071539_446111_EAA8AA18 X-CRM114-Status: GOOD ( 11.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Jing Zhang , Prasad Sodagudi , Srinivas Ramana , Suzuki K Poulose , Alexandru Elisei , linux-kernel@vger.kernel.org, Ard Biesheuvel , James Morse , Julien Thierry , Ajay Patil , kernel-team@android.com, David Brazdil , Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org 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 Mon, Jan 25, 2021 at 10:50:07AM +0000, Marc Zyngier wrote: > Add a facility to globally override a feature, no matter what > the HW says. Yes, this sounds dangerous, but we do respect the > "safe" value for a given feature. This doesn't mean the user > doesn't need to know what they are doing. > > Nothing uses this yet, so we are pretty safe. For now. > > Signed-off-by: Marc Zyngier > Reviewed-by: Suzuki K Poulose > Acked-by: David Brazdil That's more readable with a single pointer. Reviewed-by: Catalin Marinas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel