From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757934Ab1IAUhz (ORCPT ); Thu, 1 Sep 2011 16:37:55 -0400 Received: from claw.goop.org ([74.207.240.146]:42651 "EHLO claw.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751711Ab1IAUhy (ORCPT ); Thu, 1 Sep 2011 16:37:54 -0400 Message-ID: <4E5FED1A.1000300@goop.org> Date: Thu, 01 Sep 2011 13:37:46 -0700 From: Jeremy Fitzhardinge User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 MIME-Version: 1.0 To: Konrad Rzeszutek Wilk CC: David Vrabel , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" , "namhyung@gmail.com" , "rientjes@google.com" , "linux-mm@kvack.org" , "xen-devel@lists.xensource.com" , "paulmck@linux.vnet.ibm.com" Subject: Re: [Revert] Re: [PATCH] mm: sync vmalloc address space page tables in alloc_vm_area() References: <1314877863-21977-1-git-send-email-david.vrabel@citrix.com> <20110901161134.GA8979@dumpdata.com> In-Reply-To: <20110901161134.GA8979@dumpdata.com> X-Enigmail-Version: 1.3.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/01/2011 09:11 AM, Konrad Rzeszutek Wilk wrote: > On Thu, Sep 01, 2011 at 12:51:03PM +0100, David Vrabel wrote: >> From: David Vrabel > Andrew, > > I was wondering if you would be Ok with this patch for 3.1. > > It is a revert (I can prepare a proper revert if you would like > that instead of this patch). > > The users of this particular function (alloc_vm_area) are just > Xen. There are no others. I'd prefer to put explicit vmalloc_sync_all()s in the callsites where necessary, and ultimately try to work out ways of avoiding it altogether (like have some hypercall wrapper which touches the arg memory to make sure its mapped?). J