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=-9.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 B6160C47089 for ; Thu, 27 May 2021 12:37:29 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 7121A6135F for ; Thu, 27 May 2021 12:37:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7121A6135F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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=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: Subject:Cc:To:From:Message-ID:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+bgSG62D3Z8uMrjU7QZcM+UpQUXDTyZGkMFo2Y88yT8=; b=QHQqGbfzY/LQqP urOSP89qEJSVcyBmTarRZCQ3ir5ohN2pBNzRbHUd4/0ZfsboqVDbSnmPzOjUFR4mD5yTcbi2cNT4w oweaJZVGuZ1Tu2GLb1EShNaMuJT9GoL/+zRnqJ5QVcbskSiTHpKvRDjdht3bATJP6vbLvZRzMyGT4 o+StosrhD+xDqr1/eft2zA4MXgG37tohSb6BcHoz9enxUoElS3lVaXIJ2uqr+oA2pd6CPNg/H+JUG NHCkYVsXmTwMjZaXoEyB8yDesCcMAwsCS37zsMqIeM9qlCAvtXIElgcqpbtCx/ZsKedyZUbWe+rxC 19rVWgETudGDbXKUBfwQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lmFE4-005n5C-C9; Thu, 27 May 2021 12:35:00 +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 1lmFE0-005n3j-Nx for linux-arm-kernel@lists.infradead.org; Thu, 27 May 2021 12:34:57 +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 CF38361248; Thu, 27 May 2021 12:34:55 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] 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 1lmFDx-003wYs-Pq; Thu, 27 May 2021 13:34:53 +0100 Date: Thu, 27 May 2021 13:34:53 +0100 Message-ID: <87v974s6c2.wl-maz@kernel.org> From: Marc Zyngier To: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, james.morse@arm.com, joey.gouly@arm.com, will@kernel.org Subject: Re: [PATCH v3 01/20] arm64: remove redundant local_daif_mask() in bad_mode() In-Reply-To: <20210525183302.56293-2-mark.rutland@arm.com> References: <20210525183302.56293-1-mark.rutland@arm.com> <20210525183302.56293-2-mark.rutland@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: 62.31.163.78 X-SA-Exim-Rcpt-To: mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, james.morse@arm.com, joey.gouly@arm.com, will@kernel.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-20210527_053456_823707_316335EB X-CRM114-Status: GOOD ( 15.52 ) 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 Tue, 25 May 2021 19:32:43 +0100, Mark Rutland wrote: > > Upon taking an exception, the CPU sets all the DAIF bits. We never > clear any of these bits prior to calling bad_mode(), and bad_mode() > itself never clears any of these bits, so there's no need to call > local_daif_mask(). > > This patch removes the redundant call. > > Signed-off-by: Mark Rutland > Reviewed-by: Joey Gouly > Cc: Catalin Marinas > Cc: James Morse > Cc: Marc Zyngier > Cc: Will Deacon Acked-by: Marc Zyngier 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