On Friday 06 March 2009 03:50:38 Geert Uytterhoeven wrote: > On Fri, Mar 6, 2009 at 09:48, Américo Wang <xiyou.wangc...@gmail.com> wrote: > > On Fri, Mar 06, 2009 at 12:42:14AM -0600, Rob Landley wrote: > >>Apparently, nobody other than me has ever attempted to use User Mode > >> Linux built from 2.6.28 on x86-64, because it doesn't work. It still > >> doesn't work in current git. I complained about it not working back in > >> January: > >> > >>http://sourceforge.net/mailarchive/forum.php?thread_name=200901130159.043 > >>89.rob%40landley.net&forum_name=user- mode-linux-devel > >>http://lkml.indiana.edu/hypermail/linux/kernel/0901.2/00669.html > >> > >>And today, I bothered to track down why. > >> > >>This is the commit that broke it, when Peter Anvin merged x86 and x86-64 > >> for ARCH=um: http://kernel.org/hg/linux-2.6/rev/117978 > >> > >>Here's a patch that fixes it for me: > > > > Thanks, Bob! > > I've just did a build of plain v2.6.28 on amd64 aka x86-64. The > resulting image ran fine. > > I attached my .config.
Which contains: CONFIG_3_LEVEL_PGTABLES=y So the question is, why is your config saving that value, and mine isn't? Ah, I found it. You enabled CONFIG_EXPERIMENTAL, and I didn't. That's the difference. Ok, CONFIG_EXPERIMENTAL is required in order for UML to initialize its memory management. That makes a bit more sense why other people haven't seen this... Rob ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
