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 6B042C25B78 for ; Mon, 13 May 2024 22:42:07 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:Message-ID:In-Reply-To: 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=3MrVcJ1kEYIP2R81fQ2aCvrs9lj7x4FEIL1or5xlmQo=; b=HarQBlJNxEeu9RpXu+31082bR0 U4gVHZ8MII34NuU38+aBKn/zSpqPAsMC3wdJ/ADpgybOXAao7wqkour026x9VtNipvAmq4MpLR+kj 8InLxArMn/fBxIa0N6H9mDjONt2Mjf/uJr7yut9gjTH6I8F6qewuk1WMl9JVR9rwFIUi2WShyNpND qbDyYli0S4cFgwrlS8wwL1sXBNVAngB2hEos4gyo4LVvxYPG3lHQRMXbYpE5xugkbz11jl08ZxZ+Q lbRdJm9/VvBP5zSFdZm9rnJY5WXNII+BPFj+XFXQMF5ip/T4l+nSL+iHe7aaiE9sXbW8O+33w6VVF LSadQLig==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s6eMp-0000000EPVW-0kUN; Mon, 13 May 2024 22:41:59 +0000 Received: from gentwo.org ([62.72.0.81]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s6eMi-0000000EPTo-1kO1 for linux-arm-kernel@lists.infradead.org; Mon, 13 May 2024 22:41:57 +0000 Received: by gentwo.org (Postfix, from userid 1003) id 4F76040A94; Mon, 13 May 2024 15:41:51 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id 4EE054093E; Mon, 13 May 2024 15:41:51 -0700 (PDT) Date: Mon, 13 May 2024 15:41:51 -0700 (PDT) From: "Christoph Lameter (Ampere)" To: Yang Shi cc: Catalin Marinas , will@kernel.org, scott@os.amperecomputing.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: mm: force write fault for atomic RMW instructions In-Reply-To: <6066e0da-f00a-40fd-a5e2-d4d78786c227@os.amperecomputing.com> Message-ID: <8c6cc22a-5e24-ede5-94d9-06064a68403d@linux.com> References: <20240507223558.3039562-1-yang@os.amperecomputing.com> <6066e0da-f00a-40fd-a5e2-d4d78786c227@os.amperecomputing.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240513_154152_518617_82DECC7C X-CRM114-Status: UNSURE ( 7.15 ) X-CRM114-Notice: Please train this message. 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-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 10 May 2024, Yang Shi wrote: > Yeah, I'm confused too. Triggering write fault in the first place should be > fine, right? Can we update the spec? That is certainly the best solution. Howver, there is a large base of machines out there now with this issue. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel