Re: nfs: __setup_str_nfs_root_setup causes a section type conflict

On 08/04/2009 12:11 AM, Trond Myklebust wrote:
> On Mon, 2009-08-03 at 23:52 +0200, Sam Ravnborg wrote:
>> On Mon, Aug 03, 2009 at 05:07:23PM -0400, Trond Myklebust wrote:
>>> On Mon, 2009-08-03 at 22:57 +0200, Frans Pop wrote:
>>>> $ make init/do_mounts.o
>>>>    CHK     include/linux/version.h
>>>>    CHK     include/linux/utsrelease.h
>>>>    SYMLINK include/asm ->  include/asm-parisc
>>>>    CALL    scripts/checksyscalls.sh
>>>>    CC      init/do_mounts.o
>>>>
>>>> while:
>>>>
>>>> $ make fs/nfs/nfsroot.o
>>>>    CHK     include/linux/version.h
>>>>    CHK     include/linux/utsrelease.h
>>>>    SYMLINK include/asm ->  include/asm-parisc
>>>>    CALL    scripts/checksyscalls.sh
>>>>    CC      fs/nfs/nfsroot.o
>>>> fs/nfs/nfsroot.c:403: error: __setup_str_nfs_root_setup causes a section type
>>>> conflict
>>> To me that looks like some kind of compiler bug.
>> unspecified behaviour is a better name for it.
>>
>> We have two variables we have forced a section on.
>> One variable is marked RO by the compiler while the other is not.
>> This results in a section type conflict because all
>> symbols needs to have the same falgs.
>>
>> We usually triggers this with powerpc builds (64 bit IIRC),