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 41AE2C636CC for ; Tue, 31 Jan 2023 07:28:35 +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:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc: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=EdvtAsRbKOKlfaQeDAdSJXd7tbttoVBU4jYD4ZetvTc=; b=xNvXowkqydAlfn KF3J1ieH2uwi6fV3YoQu6rHfH6qLTERldnT10nvKg2LOv/SOs+nCn7jzSpt2h3UcxIBuHOl1LB6lj xvYAyatrKARrQXekrI3MKlcwy22bzGQrlgpk6iWQ/mrcRsTeU//usSyt0L8dp0rV9MNPtt6ZN5rH6 Q5333Vrzp7N6Z/if3GfLM6Ft2p2rECkA8qr6qpNC0j/ksKwiFnvzenrSGQ/GrKVG+7ckJEOsLZQT5 SEs4RESpY8N4k4E9cdNyOaFh4KJWf5HnBHJtRFlceJDe8c8C1ix6sNNho2Ant1u/Vq+c8TaenYLh8 QG/Y0+0hmqZ/GBtS9dfg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMl3D-006ZUI-Ch; Tue, 31 Jan 2023 07:27:31 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMl3A-006ZTO-L1 for linux-arm-kernel@lists.infradead.org; Tue, 31 Jan 2023 07:27:30 +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 ams.source.kernel.org (Postfix) with ESMTPS id 70115B819D6; Tue, 31 Jan 2023 07:27:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A220C433EF; Tue, 31 Jan 2023 07:27:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1675150045; bh=/+z9RH4h0gpPcoPZBLaROC49eL3VvR3fCyK472WqbL4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=zSlxHep1Rvnwya56O4mLu37nMVy7xkgtMR2LJp+VUct98kiiyzXOYkVYCg8QZJpq1 FxsIePbCBFY0QXyKDupjbCXBRCAu0+SmccSr+5BMqY+ZafgGJ8UYeTXjcQb6d3qE3U RF7cplsN0xJvBfbTl++GWZvql/vmO4zhSY6nt94s= Date: Tue, 31 Jan 2023 08:27:22 +0100 From: Greg KH To: ruanjinjie Cc: catalin.marinas@arm.com, will@kernel.org, haibinzhang@tencent.com, hewenliang4@huawei.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5.10] arm64: fix a concurrency issue in emulation_proc_handler() Message-ID: References: <20230131065211.2826133-1-ruanjinjie@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230131065211.2826133-1-ruanjinjie@huawei.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230130_232728_856165_98E24C39 X-CRM114-Status: GOOD ( 15.66 ) 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, Jan 31, 2023 at 02:52:11PM +0800, ruanjinjie wrote: > This patch is addressing an issue in stable linux-5.10 only. > > In linux-6.1, the related code is refactored in 124c49b1b("arm64: > armv8_deprecated: rework deprected instruction handling") and > this issue was incidentally fixed. However, the patch changes a lot and > is not specific to this issue. Then what about 5.15.y? You can not upgrade to that kernel and have a regression, right? And nit, you need a ' ' before the '(' character. But why can we just not take the original commit that fixed this issue? That way almost always is the best (prevents regressions, makes backports easier, is actually tested, etc.) ? thanks, greg k-h _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel