From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx108.postini.com [74.125.245.108]) by kanga.kvack.org (Postfix) with SMTP id 5F9ED8D0003 for ; Thu, 22 Nov 2012 15:51:40 -0500 (EST) Date: Thu, 22 Nov 2012 20:56:37 +0000 From: Alan Cox Subject: Re: [PATCH 02/40] x86: mm: drop TLB flush from ptep_set_access_flags Message-ID: <20121122205637.4e9112e2@pyramind.ukuu.org.uk> In-Reply-To: <1353612353-1576-3-git-send-email-mgorman@suse.de> References: <1353612353-1576-1-git-send-email-mgorman@suse.de> <1353612353-1576-3-git-send-email-mgorman@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Peter Zijlstra , Andrea Arcangeli , Ingo Molnar , Rik van Riel , Johannes Weiner , Hugh Dickins , Thomas Gleixner , Paul Turner , Lee Schermerhorn , Alex Shi , Srikar Dronamraju , Aneesh Kumar , Linus Torvalds , Andrew Morton , Linux-MM , LKML On Thu, 22 Nov 2012 19:25:15 +0000 Mel Gorman wrote: > From: Rik van Riel > > Intel has an architectural guarantee that the TLB entry causing > a page fault gets invalidated automatically. This means > we should be able to drop the local TLB invalidation. Can we get an AMD sign off on that ? Alan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964807Ab2KVUwp (ORCPT ); Thu, 22 Nov 2012 15:52:45 -0500 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:36801 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756837Ab2KVUwl (ORCPT ); Thu, 22 Nov 2012 15:52:41 -0500 Date: Thu, 22 Nov 2012 20:56:37 +0000 From: Alan Cox To: Mel Gorman Cc: Peter Zijlstra , Andrea Arcangeli , Ingo Molnar , Rik van Riel , Johannes Weiner , Hugh Dickins , Thomas Gleixner , Paul Turner , Lee Schermerhorn , Alex Shi , Srikar Dronamraju , Aneesh Kumar , Linus Torvalds , Andrew Morton , Linux-MM , LKML Subject: Re: [PATCH 02/40] x86: mm: drop TLB flush from ptep_set_access_flags Message-ID: <20121122205637.4e9112e2@pyramind.ukuu.org.uk> In-Reply-To: <1353612353-1576-3-git-send-email-mgorman@suse.de> References: <1353612353-1576-1-git-send-email-mgorman@suse.de> <1353612353-1576-3-git-send-email-mgorman@suse.de> X-Mailer: Claws Mail 3.8.1 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 22 Nov 2012 19:25:15 +0000 Mel Gorman wrote: > From: Rik van Riel > > Intel has an architectural guarantee that the TLB entry causing > a page fault gets invalidated automatically. This means > we should be able to drop the local TLB invalidation. Can we get an AMD sign off on that ? Alan