From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1KQPXS-0000EH-SB for user-mode-linux-devel@lists.sourceforge.net; Tue, 05 Aug 2008 09:37:34 -0700 Received: from dns1.exasol.com ([62.146.138.134]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1KQPXR-0000f4-41 for user-mode-linux-devel@lists.sourceforge.net; Tue, 05 Aug 2008 09:37:34 -0700 Received: from dns1.exasol.com (root@localhost) by dns1.exasol.com (8.13.4/8.13.4/Debian-3sarge3) with ESMTP id m75GbOiw013085 for ; Tue, 5 Aug 2008 18:37:24 +0200 Received: from mail2 (fwgw.exasol.com [62.146.138.137]) by dns1.exasol.com (8.13.4/8.13.4/Debian-3sarge3) with ESMTP id m75GbNCV013061 for ; Tue, 5 Aug 2008 18:37:24 +0200 Message-ID: <489881BE.9070506@exasol.com> Date: Tue, 05 Aug 2008 18:37:18 +0200 From: juergen.kadidlo@exasol.com MIME-Version: 1.0 References: <489870E7.7070000@exasol.com> <489873E0.9030801@panasas.com> In-Reply-To: <489873E0.9030801@panasas.com> Subject: Re: [uml-devel] kernel module support broken on x86-64? List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============0404056902==" Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: Boaz Harrosh Cc: user-mode-linux-devel@lists.sourceforge.net This is a multi-part message in MIME format. --===============0404056902== Content-Type: multipart/alternative; boundary="------------030107060409000003090506" This is a multi-part message in MIME format. --------------030107060409000003090506 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Boaz Harrosh wrote: >juergen.kadidlo@exasol.com wrote: > > >>Hi! >> >> I've compiled an UML kernel based on 2.6.25 but loading kernel modules >>seems to be broken. No matter which module I try to load the output >>looks similar to this: >> >> overflow in relocation type 11 val 80836d41 >>'loop' likely not compiled with -mcmodel=kernel >> >>After searching for a while I found some threads from 2006 discussing >>this issue, e.g.: >>http://www.mail-archive.com/user-mode-linux-devel@lists.sourceforge.net/msg03693.html >>and >>http://marc.info/?l=user-mode-linux-devel&m=115125101012707&w=2 >> >>As Andi Kleen has mentioned in a mail from the first thread, simply >>appending "-mcmodel=kernel" to the KBUILD_CFLAGS does not work (I tried >>it anyway and can confirm his statement ;) >> >>Since I could not find any solution I've decided to write this mail and >>ask about the current state of this issue and of course for a solution! >>I simply don't want to believe that there is no loadable module support >>for UML in 2008... >> >>Regards >>JK >> >> >> > >Every thing is fine down here. What host Kernel-gcc-glibc / uml-gcc-glibc >are you using? > >I'm using out-of-tree modules with uml for every kernel since 2.6.19. >I have both Host and UML as x86_64 on FC7 with gcc 4.1.2 > >Boaz > > > I'm glad to here that the bug has been fixed. Anyway, it does not work with my configuration: - CentOS 5.1 as host system and UML root fs - Kernel 2.6.25.4 (vanilla, but config taken from the CentOS kernel) - GCC 4.1.2 - GLIBC 2.5 Regards JK --------------030107060409000003090506 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: 8bit Boaz Harrosh wrote: 
juergen.kadidlo@exasol.com wrote:
  
Hi!

 I've compiled an UML kernel based on 2.6.25 but loading kernel modules 
seems to be broken. No matter which module I try to load the output 
looks similar to this:

 overflow in relocation type 11 val 80836d41
'loop' likely not compiled with -mcmodel=kernel

After searching for a while I found some threads from 2006 discussing 
this issue, e.g.:
http://www.mail-archive.com/user-mode-linux-devel@lists.sourceforge.net/msg03693.html
and
http://marc.info/?l=user-mode-linux-devel&m=115125101012707&w=2

As Andi Kleen has mentioned in a mail from the first thread, simply 
appending "-mcmodel=kernel" to the KBUILD_CFLAGS does not work (I tried 
it anyway and can confirm his statement ;)

Since I could not find any solution I've decided to write this mail and 
ask about the current state of this issue and of course for a solution! 
I simply don't want to believe that there is no loadable module support 
for UML in 2008...

Regards
JK

    

Every thing is fine down here. What host Kernel-gcc-glibc / uml-gcc-glibc
are you using?

I'm using out-of-tree modules with uml for every kernel since 2.6.19.
I have both Host and UML as x86_64 on FC7 with gcc 4.1.2

Boaz
I'm glad to here that the bug has been fixed. Anyway, it does not work with my configuration:

 - CentOS 5.1 as host system and UML root fs
 - Kernel 2.6.25.4 (vanilla, but config taken from the CentOS kernel)
 - GCC 4.1.2
 - GLIBC 2.5

Regards
JK
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