linux-kernel - Re: [PATCH] Fix ARCH=um segfault on x86-64.

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Message-ID: <10f740e80903060151w779bbd11ld2fcc437ac7ac321@mail.gmail.com>
Date:	Fri, 6 Mar 2009 10:51:12 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Américo Wang <xiyou.wangcong@...il.com>
Cc:	Rob Landley <rob@...dley.net>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix ARCH=um segfault on x86-64.

On Fri, Mar 6, 2009 at 10:50, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> On Fri, Mar 6, 2009 at 09:48, Américo Wang <xiyou.wangcong@...il.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=200901130159.04389.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.

So I'm wondering: why does it work for me and not for you?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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