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Date:	Sun, 12 Oct 2014 18:40:23 +0200
From:	Willy Tarreau <>
To:	Andev <>
Cc:	Bertrand Jacquin <>,
	Rusty Russell <>,, LKML <>
Subject: Re: [PATCH 2/3] kbuild: handle module compression while running 'make modules_install'.


On Sun, Oct 12, 2014 at 11:50:59AM -0400, Andev wrote:
> Hello Bertrand,
> Does this need any user space support? Cos currently on a debian
> testing box(powerpc) enabling this options causes a boot hang while
> mounting the root file system.

I suspect that your module-ini-tools/kmod are built without support for
compressed modules. One method to verify this is to run it against ldd :

$ ldd /sbin/modprobe (0x00007fff918ed000) => /lib64/ (0x00007ff9317f1000) => /lib64/ (0x00007ff9315d5000) => /lib64/ (0x00007ff931214000) => /lib64/ (0x00007ff930ff2000) => /usr/lib64/ (0x00007ff930ddd000)
        /lib64/ (0x00007ff931a06000)

As you can see, mine depends on liblzma and libz so it was clearly built
with support for both of them.


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