Received: by 2002:ac0:a581:0:0:0:0:0 with SMTP id m1-v6csp583291imm; Wed, 4 Jul 2018 02:21:50 -0700 (PDT) X-Google-Smtp-Source: AAOMgperjT28d13RHeMfWBw94bq6sHqK1u5SDmkJj89iZuKtYGQjBuqeToA34yPiCvU5Hch35cwo X-Received: by 2002:a63:a745:: with SMTP id w5-v6mr1213579pgo.374.1530696110627; Wed, 04 Jul 2018 02:21:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1530696110; cv=none; d=google.com; s=arc-20160816; b=F+W1mN5gsnFKgbwxBYUslU9j5wKj1Ec+IN6uc+kGq4C6mRG2coLz0KIQbNMnxwQU9L T3uO4bUqyo47kJpN2JwNkapu3E2KdzRyBjGwZyUWSqjXWFH9d5Xy4iH2xncDsNxCKGHu quW6ae47ygjwddBbAseVtV7lL3UWccBsaH3Dcal1zjaT9x2iaFHUbxCZFahy52CnwAzH ElVyb4gBmKI3E3NrWsadWL2EMZ0+pSDlmXN45Nd0/JA9HEwLHK8Z9TuU0gdNLoWpEbkQ 19V1FEQ3V6Cr//8Pmvf+4hd+I3kMEPxqTwNecNS5vPdS8yQuPMr6Gda/GvLFlkpWl1Ot ZrJg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date :arc-authentication-results; bh=cuHBSMeZN9AkMxVopNSG7hLtyzRPoKNKXWwgPJgFMwk=; b=mqWIMIIjK+CjgIYdMKjEnwZMao2IhVry7cGVq47BXlsY/BeTFQ0lDeVfms5BH4eDqo I2NON3fFU0Fk36foJQhM/ZUHYZyW+m0p2A7t9OG/9/9lVsNsmkeJKYyLAerc9lNcCvrN OVF/jFSVmfih+CTw2PTZg9UNttf0p7kaFDK8cTvNJjcqm9s7mTyrRUSQ1S0p3P8p0CHj 7+eObqvL7/lioX/Pg6c1eCOxxquSTSpGZF/ZMaax8jJ40+Rhb4w2lt13iYtnf5VwecAJ aRoh3DkQKroLwEQtbVP1wJbTWRvd8j6/GJu3OVLTsYk0RhIdNHzeJd9+fg3rRAln7sdA JFwg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o16-v6si2978713pll.449.2018.07.04.02.21.36; Wed, 04 Jul 2018 02:21:50 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933703AbeGDJUt (ORCPT + 99 others); Wed, 4 Jul 2018 05:20:49 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:46696 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932576AbeGDJUr (ORCPT ); Wed, 4 Jul 2018 05:20:47 -0400 Received: from p4fea482e.dip0.t-ipconnect.de ([79.234.72.46] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1fadxl-0002wX-IA; Wed, 04 Jul 2018 11:20:37 +0200 Date: Wed, 4 Jul 2018 11:20:37 +0200 (CEST) From: Thomas Gleixner To: "Yang, Bin" cc: "mingo@kernel.org" , "hpa@zytor.com" , "linux-kernel@vger.kernel.org" , "peterz@infradead.org" , "x86@kernel.org" Subject: Re: [PATCH] x86/mm: fix cpu stuck issue in __change_page_attr_set_clr In-Reply-To: <3224aae1d09788aba687fd7bd9e088f233016fc8.camel@intel.com> Message-ID: References: <1530180340-18593-1-git-send-email-bin.yang@intel.com> <0131cecd5d0456c2a109f4b8bdbfe558389671dd.camel@intel.com> <3224aae1d09788aba687fd7bd9e088f233016fc8.camel@intel.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 4 Jul 2018, Yang, Bin wrote: > You are completely right. After considering, I think my patch is like a > workaround but not real fix. I am trying to re-write a new patch > without cache implementation. Care to explain the actual problem coherently _before_ writing yet another patch? Thanks, tglx