From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756712AbZEUBsT (ORCPT ); Wed, 20 May 2009 21:48:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754595AbZEUBsM (ORCPT ); Wed, 20 May 2009 21:48:12 -0400 Received: from cantor2.suse.de ([195.135.220.15]:48049 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753805AbZEUBsL (ORCPT ); Wed, 20 May 2009 21:48:11 -0400 Message-ID: <4A14B2D2.1090008@novell.com> Date: Thu, 21 May 2009 10:48:02 +0900 From: Tejun Heo User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: suresh.b.siddha@intel.com Cc: "H. Peter Anvin" , "JBeulich@novell.com" , "andi@firstfloor.org" , "mingo@elte.hu" , "linux-kernel-owner@vger.kernel.org" , "tglx@linutronix.de" , "linux-kernel@vger.kernel.org" Subject: Re: [GIT PATCH] x86,percpu: fix pageattr handling with remap allocator References: <1242305390-21958-1-git-send-email-tj@kernel.org> <1242436626.27006.8623.camel@localhost.localdomain> <4A0ED8D8.2010303@kernel.org> <1242500964.27006.8636.camel@localhost.localdomain> <4A0F672A.3000309@kernel.org> <1242674444.27006.8691.camel@localhost.localdomain> <4A11B9E7.8010707@zytor.com> <1242680835.27006.8734.camel@localhost.localdomain> <4A120B47.8060200@kernel.org> <1242860470.27006.10106.camel@localhost.localdomain> <4A149B89.3010104@kernel.org> <1242866163.27006.10125.camel@localhost.localdomain> <4A14B271.5010202@kernel.org> In-Reply-To: <4A14B271.5010202@kernel.org> X-Enigmail-Version: 0.95.7 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 Tejun Heo wrote: > On NUMA, both remap and 4k add some level of TLB pressure. remap will > waste one more PMD TLB entry (dup) while 4k adds a bunch of 4k ones > (non-dup but what used to be accessed by PMD TLB is now accessed with > PTE TLB). Correction: 4k TLBs are dups too. Thanks. -- tejun