From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 7073A6B003D for ; Thu, 7 Jan 2010 19:30:19 -0500 (EST) Date: Thu, 7 Jan 2010 16:29:28 -0800 From: Andrew Morton Subject: Re: [RESEND][mmotm][PATCH v2, 0/5] elf coredump: Add extended numbering support Message-Id: <20100107162928.1d6eba76.akpm@linux-foundation.org> In-Reply-To: <20100104.100607.189714443.d.hatayama@jp.fujitsu.com> References: <20100104.100607.189714443.d.hatayama@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Daisuke HATAYAMA Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, mhiramat@redhat.com, xiyou.wangcong@gmail.com, andi@firstfloor.org, jdike@addtoit.com, tony.luck@intel.com List-ID: On Mon, 04 Jan 2010 10:06:07 +0900 (JST) Daisuke HATAYAMA wrote: > The current ELF dumper can produce broken corefiles if program headers > exceed 65535. In particular, the program in 64-bit environment often > demands more than 65535 mmaps. If you google max_map_count, then you > can find many users facing this problem. > > Solaris has already dealt with this issue, and other OSes have also > adopted the same method as in Solaris. Currently, Sun's document and > AMD 64 ABI include the description for the extension, where they call > the extension Extended Numbering. See Reference for further information. > > I believe that linux kernel should adopt the same way as they did, so > I've written this patch. > > I am also preparing for patches of GDB and binutils. That's a beautifully presented patchset. Thanks for doing all that work - it helps. UML maintenance appears to have ceased in recent times, so if we wish to have these changes runtime tested (we should) then I think it would be best if you could find someone to do that please. And no akpm code-review would be complete without: dump_seek() is waaaay to large to be inlined. Is there some common .c file to where we could move it? -- 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