From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx161.postini.com [74.125.245.161]) by kanga.kvack.org (Postfix) with SMTP id CF8686B00E4 for ; Tue, 5 Feb 2013 00:48:47 -0500 (EST) Received: by mail-ie0-f182.google.com with SMTP id k14so6842944iea.27 for ; Mon, 04 Feb 2013 21:48:47 -0800 (PST) Message-ID: <1360043326.2403.2.camel@kernel.cn.ibm.com> Subject: Re: Support variable-sized huge pages From: Ric Mason Date: Mon, 04 Feb 2013 23:48:46 -0600 In-Reply-To: <20130131105227.GI30577@one.firstfloor.org> References: <1359620590.1391.5.camel@kernel> <20130131105227.GI30577@one.firstfloor.org> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Andi Kleen Cc: linux-mm@kvack.org, Hillf Danton Hi Andi, On Thu, 2013-01-31 at 11:52 +0100, Andi Kleen wrote: > On Thu, Jan 31, 2013 at 02:23:10AM -0600, Ric Mason wrote: > > Hi all, > > > > It seems that Andi's "Support more pagesizes for > > MAP_HUGETLB/SHM_HUGETLB" patch has already merged. According to the > > patch, x86 will support 2MB and 1GB huge pages. But I just see > > hugepages-2048kB under /sys/kernel/mm/hugepages/ on my x86_32 PAE desktop. > > Where is 1GB huge pages? > > 1GB pages are only supported under 64bit kernels, and also > only if you allocate them explicitely with boot options. I am curious about how can buddy system alloc 1GB huge pages? the most order buddy system supports is 10. Could you explain to me? > > -Andi -- 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