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From: Adam Nielsen <a.nielsen@shikadi.net>
To: Jeff Dike <jdike@addtoit.com>
Cc: "Américo Wang" <xiyou.wangcong@gmail.com>,
	"LKML Mailinglist" <linux-kernel@vger.kernel.org>
Subject: Re: UML broken - runaway loop modprobe binfmt-464c
Date: Sun, 21 Feb 2010 13:00:02 +1000	[thread overview]
Message-ID: <4B80A1B2.10207@shikadi.net> (raw)
In-Reply-To: <20100215161111.GA18664@c2.user-mode-linux.org>

>> So you are using 32-bit modprobe binary and 64-bit kernel?
>>
>> This will not work, since kernel binfmt_elf module checks
>> if e_machine is EM_X86_64.
>
> Not just 32-bit modprobe - any 32-bit binary on a 64-bit UML will
> cause this, I think.

Thanks for the suggestions.  After some more investigation and off-list 
pointers, it seems the problem is caused because compiling UML for x86_64 
doesn't allow you to enable IA32 emulation.

Is this just a case of the Kconfig option being missed, or is there a more 
fundamental reason as to why, unlike with the Linux kernel, it's not possible 
to run 32-bit apps inside a 64-bit UML?

Thanks,
Adam.

      reply	other threads:[~2010-02-21  3:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-15  6:47 UML broken - runaway loop modprobe binfmt-464c Adam Nielsen
2010-02-15 11:37 ` Américo Wang
2010-02-15 16:11   ` Jeff Dike
2010-02-21  3:00     ` Adam Nielsen [this message]

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