From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f47.google.com (mail-pa0-f47.google.com [209.85.220.47]) by kanga.kvack.org (Postfix) with ESMTP id 73C456B0031 for ; Tue, 15 Oct 2013 13:53:17 -0400 (EDT) Received: by mail-pa0-f47.google.com with SMTP id kp14so9334235pab.20 for ; Tue, 15 Oct 2013 10:53:17 -0700 (PDT) Received: by mail-pa0-f51.google.com with SMTP id kp14so9390109pab.38 for ; Tue, 15 Oct 2013 10:53:14 -0700 (PDT) Message-ID: <525D8106.9020304@zankel.net> Date: Tue, 15 Oct 2013 10:53:10 -0700 From: Chris Zankel MIME-Version: 1.0 Subject: Re: CONFIG_SLUB/USE_SPLIT_PTLOCKS compatibility References: <20131014071205.GA23735@shutemov.name> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Max Filippov Cc: "Kirill A. Shutemov" , LKML , "linux-mm@kvack.org" , Christoph Lameter , Pekka Enberg , Matt Mackall , "David S. Miller" , "linux-xtensa@linux-xtensa.org" On 10/14/2013 04:49 AM, Max Filippov wrote: > Buddy allocator was used here prior to commit 6656920 [XTENSA] Add > support for cache-aliasing I can only guess that the change was made > to make allocated page tables have the same colour, but am not sure > why this is needed. Chris? Max, I think you are right that in an earlier attempt to support cache aliasing, we tried to allocate pages with the correct 'color', and cached pages locally (if I remember correctly). The approach we use now doesn't require that so the suggested patches are fine. (Note that cache aliasing support hasn't been committed to mainline yet) Thanks, -Chris -- 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