From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932675Ab3CDVpZ (ORCPT ); Mon, 4 Mar 2013 16:45:25 -0500 Received: from mail-pb0-f41.google.com ([209.85.160.41]:38611 "EHLO mail-pb0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932254Ab3CDVpY (ORCPT ); Mon, 4 Mar 2013 16:45:24 -0500 Message-ID: <513515F0.7050603@mit.edu> Date: Mon, 04 Mar 2013 13:45:20 -0800 From: Andy Lutomirski User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130219 Thunderbird/17.0.3 MIME-Version: 1.0 To: Borislav Petkov CC: X86 ML , LKML Subject: Re: [PATCH 3/5] x86-64, docs, mm: Add vsyscall range to virtual address space layout References: <1362428180-8865-1-git-send-email-bp@alien8.de> <1362428180-8865-4-git-send-email-bp@alien8.de> In-Reply-To: <1362428180-8865-4-git-send-email-bp@alien8.de> 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 On 03/04/2013 12:16 PM, Borislav Petkov wrote: > Add the end of the virtual address space to its layout documentation. > > Signed-off-by: Borislav Petkov > --- > Documentation/x86/x86_64/mm.txt | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt > index d6498e3cd713..881582f75c9c 100644 > --- a/Documentation/x86/x86_64/mm.txt > +++ b/Documentation/x86/x86_64/mm.txt > @@ -13,7 +13,9 @@ ffffe90000000000 - ffffe9ffffffffff (=40 bits) hole > ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB) > ... unused hole ... > ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0 > -ffffffffa0000000 - fffffffffff00000 (=1536 MB) module mapping space > +ffffffffa0000000 - ffffffffff5fffff (=1525 MB) module mapping space > +ffffffffff600000 - ffffffffffdfffff (=8 MB) vsyscalls > +ffffffffffe00000 - ffffffffffffffff (=2 MB) unused hole > > The direct mapping covers all memory in the system up to the highest > memory address (this means in some cases it can also include PCI memory > vsyscalls are only 4k. Am I missing something obvious her?