Re: 2.4.19 make allmodconfig - undefined symbols

From: Keith Owens (
Date: Sun Aug 04 2002 - 08:22:24 EST

On Sun, 4 Aug 2002 14:35:13 +0200,
Willy Tarreau <> wrote:
>On Sun, Aug 04, 2002 at 08:13:20PM +1000, Keith Owens wrote:
>> 2.4.19 make allmodconfig. Besides the perennial drivers/net/wan/comx.o
>> wanting proc_get_inode, there was only one undefined symbol. In the
>> extremely unlikely event that binfmt_elf is a module (how do you load
>> modules when binfmt_elf is a module?), smp_num_siblings is unresolved.
>I also get an unresolved reference to __io_virt_debug in misc.o:puts()
>when building bzImage. If you don't get it, it means that my tree is

Neither. It is a problem with CONFIG_DEBUG_IOVIRT which allmod and
allyesconfig turn on. My builds stop at vmlinux and do not build
bzImage so I did not detect this problem. The outb_p calls in misc.c
need fixing for CONFIG_DEBUG_IOVIRT=y, or force CONFIG_DEBUG_IOVIRT=n.

Interesting that the comment for CONFIG_DEBUG_IOVIRT says "Temporary
debugging check to catch old code using unmapped ISA addresses. Will be
removed in 2.4".

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