From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1BX2BB-0003s5-OB for user-mode-linux-devel@lists.sourceforge.net; Sun, 06 Jun 2004 11:15:33 -0700 Received: from imap.gmx.net ([213.165.64.20] helo=mail.gmx.net) by sc8-sf-mx2.sourceforge.net with smtp (Exim 4.30) id 1BX2BB-0005rK-0Z for user-mode-linux-devel@lists.sourceforge.net; Sun, 06 Jun 2004 11:15:33 -0700 Message-ID: <10e901c44bf3$48506160$2000000a@schlepptopp> From: "roland" References: <007701c44be9$e4d7d630$dd02a8c0@ferraro> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Subject: [uml-devel] Re: [uml-user] SuSE 9.1 host + 2.4.26 Kernel + GCC 3.3.3 similarities to 2.6.6!? Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sun, 6 Jun 2004 20:22:52 +0200 To: uml , uml-user Cc: user-mode-linux-devel@lists.sourceforge.net hi! > As well, I encountered the same memory problems -- it wouldn't recognize > more than 32M! > > Can anyone else confirm? (Roland?) i can at least confirm that 2.4 uml kernel has O1/O2 compile issues too - got the same hang at "Init 3...." on suse9/9.1 as in 2.6.6. afaik, these symptoms are known "compile issues": - hang after "Checking for /proc/mm..." - hang after "Init...." - command line options not being recognized (mem is no more than 32M,umid not being recognized....) - terminal being unusable after shutdown/halt - needs "reset" - uml processes left running after shutdown/halt - further...? as -O2 Options break down into: -fforce-mem -foptimize-sibling-calls -fstrength-reduce -fcse-follow-jumps -fcse-skip-blocks -frerun-cse-after-loop -frerun-loop-opt -fgcse -fgcse-lm -fgcse-sm -fdelete-null-pointer-checks -fexpensive-optimizations -fregmov -fschedule-insns -fschedule-insns2 -fsched-interblock -fsched-spec -fcaller-saves -fpeephole2 -freorder-blocks -freorder-functions -fstrict-aliasing -falign-functions -falign-jumps -falign-loops -falign-labels just someone needs to dig into that, which of these optimizations result in a "corrupt" uml binary. maybe it's only one - maybe several ones. does someone have a compile farm to "trial and error" this very quickly ? ;) regards roland ----- Original Message ----- From: "uml" To: "uml-user" Sent: Sunday, June 06, 2004 7:15 PM Subject: [uml-user] SuSE 9.1 host + 2.4.26 Kernel + GCC 3.3.3 similarities to 2.6.6!? > For the sake of discussion/argument/curiosity, I decided to compile 2.4.26 > on SuSE9.1 with a slackware root_fs (9.1)... > > Guess what I encountered that was similar to the 2.6.6 kernel compilation?? > > I had to replace every instance of -O2 with -O1 in order for it to run. I > am beginning to question the compiler rather than UML now. I'm using GCC > 3.3.3 (default). > > As well, I encountered the same memory problems -- it wouldn't recognize > more than 32M! > > Can anyone else confirm? (Roland?) > > The host is SMP, but UML is NOT compiled for SMP support. > > Here's the total procedure I used: > ---8<--- > #!/bin/sh > cd /tmp > wget http://www.kernel.org/pub/linux/kernel/v2.4/linux-2.4.26.tar.bz2 > wget > http://umn.dl.sourceforge.net/sourceforge/user-mode-linux/uml-patch-2.4.26-1.bz2 > tar -xjvf linux-2.4.26.tar.bz2 > cd linux-2.4.26 > bzcat /tmp/uml-patch-2.4.26-1.bz2 | patch -p1 > make menuconfig ARCH=um [turn on COW support -- but that's the only change > from default!] > perl -e 's/-O2/-O1/gi' -p -i.bak Makefile arch/um/Makefile > make linux modules ARCH=um > strip linux > cp linux ../linux-2.4.26 > cd .. > ./linux-2.4.26 ubd0=slack91.cow,slack91.img mem=128M eth0=tuntap,tap2 > umid=slack91test > ---8<--- > > Without the 'perl -e 's/-O2/-O1/gi' -p -i.bak Makefile arch/um/Makefile' > substitutions, it will compile, but I experience the same issues I do with > 2.6.6. > > Ideas? > > > > ------------------------------------------------------- > This SF.Net email is sponsored by the new InstallShield X. > From Windows to Linux, servers to mobile, InstallShield X is the one > installation-authoring solution that does it all. Learn more and > evaluate today! http://www.installshield.com/Dev2Dev/0504 > _______________________________________________ > User-mode-linux-user mailing list > User-mode-linux-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > ------------------------------------------------------- This SF.Net email is sponsored by the new InstallShield X. >From Windows to Linux, servers to mobile, InstallShield X is the one installation-authoring solution that does it all. Learn more and evaluate today! http://www.installshield.com/Dev2Dev/0504 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel