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Date:	Fri, 23 Nov 2007 18:13:48 +0800
From:	WANG Cong <xiyou.wangcong@...il.com>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Jeff Dike <jdike@...toit.com>,
	Blaisorblade <blaisorblade@...oo.it>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PROBLEM] uml doesn't compile on i386

On Fri, Nov 23, 2007 at 10:52:06AM +0200, Pekka Enberg wrote:
>Hi,
>
>Current git head doesn't compile. Looks like fall-out from the x86 merge?
>
>penberg@...i:~/src/linux/uml-2.6$ make ARCH=um
>  SYMLINK arch/um/include/kern_constants.h
>  SYMLINK arch/um/include/sysdep
>make[1]: `arch/um/sys-i386/user-offsets.s' is up to date.
>  CHK     arch/um/include/user_constants.h
>  CHK     include/linux/version.h
>  CHK     include/linux/utsrelease.h
>  CC      arch/um/kernel/asm-offsets.s
>In file included from include/asm/arch/atomic.h:2,
>                 from include/asm/atomic.h:9,
>                 from include/linux/spinlock.h:333,
>                 from include/linux/seqlock.h:29,
>                 from include/linux/time.h:8,
>                 from include/linux/timex.h:57,
>                 from include/linux/sched.h:53,
>                 from arch/um/include/sysdep/kernel-offsets.h:2,
>                 from arch/um/kernel/asm-offsets.c:1:
>include/asm/arch/atomic_32.h: In function 'atomic_add_unless':
>include/asm/arch/atomic_32.h:237: error: 'struct cpuinfo_um' has no
>member named 'x86'
>In file included from include/asm/rwsem.h:4,
>                 from include/linux/rwsem.h:24,
>                 from include/linux/mm_types.h:11,
>                 from include/linux/sched.h:60,
>                 from arch/um/include/sysdep/kernel-offsets.h:2,
>                 from arch/um/kernel/asm-offsets.c:1:
>include/asm/arch/rwsem.h: In function '__down_write_trylock':
>include/asm/arch/rwsem.h:165: error: 'struct cpuinfo_um' has no member
>named 'x86'
>make[1]: *** [arch/um/kernel/asm-offsets.s] Error 1
>make: *** [prepare0] Error 2

Hmm, I believe this patch[1] from Jeff can solve the problem. ;-)

[1] http://lkml.org/lkml/2007/11/19/220


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