From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751694Ab2JWDBw (ORCPT ); Mon, 22 Oct 2012 23:01:52 -0400 Received: from gate.crashing.org ([63.228.1.57]:53319 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751045Ab2JWDBv (ORCPT ); Mon, 22 Oct 2012 23:01:51 -0400 Message-ID: <1350956709.2728.20.camel@pasglop> Subject: Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v6 From: Benjamin Herrenschmidt To: mtk.manpages@gmail.com Cc: Andi Kleen , Andi Kleen , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hillf Danton Date: Tue, 23 Oct 2012 12:45:09 +1100 In-Reply-To: References: <1350665289-7288-1-git-send-email-andi@firstfloor.org> <20121022132733.GQ16230@one.firstfloor.org> <20121022133534.GR16230@one.firstfloor.org> <20121022153633.GK2095@tassilo.jf.intel.com> <20121022161151.GS16230@one.firstfloor.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2012-10-22 at 18:23 +0200, Michael Kerrisk (man-pages) wrote: > Since PowerPC already allows 16GB page sizes, doesn't there need to be > allowance for the possibility of future expansion? Choosing a larger > minimum size (like 2^16) would allow that. Does the minimum size need > to be 16k? (Surely, if you want a HUGEPAGE, you want a bigger page > than that? I am not sure.) I can't say for sure what we're going to come up with in 5 years but so far, I am not aware of plans to go beyond 16G just yet :-) Cheers, Ben. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx139.postini.com [74.125.245.139]) by kanga.kvack.org (Postfix) with SMTP id 186A46B0073 for ; Mon, 22 Oct 2012 21:45:18 -0400 (EDT) Message-ID: <1350956709.2728.20.camel@pasglop> Subject: Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v6 From: Benjamin Herrenschmidt Date: Tue, 23 Oct 2012 12:45:09 +1100 In-Reply-To: References: <1350665289-7288-1-git-send-email-andi@firstfloor.org> <20121022132733.GQ16230@one.firstfloor.org> <20121022133534.GR16230@one.firstfloor.org> <20121022153633.GK2095@tassilo.jf.intel.com> <20121022161151.GS16230@one.firstfloor.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: mtk.manpages@gmail.com Cc: Andi Kleen , Andi Kleen , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hillf Danton On Mon, 2012-10-22 at 18:23 +0200, Michael Kerrisk (man-pages) wrote: > Since PowerPC already allows 16GB page sizes, doesn't there need to be > allowance for the possibility of future expansion? Choosing a larger > minimum size (like 2^16) would allow that. Does the minimum size need > to be 16k? (Surely, if you want a HUGEPAGE, you want a bigger page > than that? I am not sure.) I can't say for sure what we're going to come up with in 5 years but so far, I am not aware of plans to go beyond 16G just yet :-) Cheers, Ben. -- 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