From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f43.google.com (mail-pa0-f43.google.com [209.85.220.43]) by kanga.kvack.org (Postfix) with ESMTP id 7B23D6B0037 for ; Tue, 24 Sep 2013 09:39:15 -0400 (EDT) Received: by mail-pa0-f43.google.com with SMTP id hz1so3692698pad.2 for ; Tue, 24 Sep 2013 06:39:15 -0700 (PDT) Received: by mail-qc0-f172.google.com with SMTP id l13so3101901qcy.31 for ; Tue, 24 Sep 2013 06:39:12 -0700 (PDT) Date: Tue, 24 Sep 2013 09:39:08 -0400 From: Tejun Heo Subject: Re: [PATCH 4/6] x86/mem-hotplug: Support initialize page tables bottom up Message-ID: <20130924133908.GJ2366@htj.dyndns.org> References: <524162DA.30004@cn.fujitsu.com> <5241649B.3090302@cn.fujitsu.com> <20130924123340.GE2366@htj.dyndns.org> <52419264.3020409@gmail.com> <20130924132727.GI2366@htj.dyndns.org> <524194F6.4000101@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <524194F6.4000101@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Zhang Yanfei Cc: Zhang Yanfei , "Rafael J . Wysocki" , lenb@kernel.org, Thomas Gleixner , mingo@elte.hu, "H. Peter Anvin" , Andrew Morton , Toshi Kani , Wanpeng Li , Thomas Renninger , Yinghai Lu , Jiang Liu , Wen Congyang , Lai Jiangshan , isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com, Mel Gorman , Minchan Kim , mina86@mina86.com, gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com, lwoodman@redhat.com, Rik van Riel , jweiner@redhat.com, prarit@redhat.com, "x86@kernel.org" , linux-doc@vger.kernel.org, "linux-kernel@vger.kernel.org" , Linux MM , linux-acpi@vger.kernel.org, imtangchen@gmail.com Hello, On Tue, Sep 24, 2013 at 09:34:46PM +0800, Zhang Yanfei wrote: > > But that wouldn't be ideal as we want the page tables above kernel > > image and the above would allocate it above ISA_END_ADDRESS, right? > > The original idea is we will allocate everything above the kernel. So > the pagetables for [ISA_END_ADDRESS, kernel_end) will be also located > above the kernel. I'm a bit confused why we need two separate calls then. What's the difference from calling with the whole range? Thanks. -- tejun -- 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