Re: Compile error on 2.6.10-rc1-mm1

[Hariprasad Nellitheertha <hari@in.ibm.com>]

Andrew Morton wrote:
> Hariprasad Nellitheertha <hari@in.ibm.com> wrote:
> 
>>The compile time error that few people have been seeing with 
>> the last couple of -mm releases are due to the changes 
>> introduced to arch/i386/kernel/vmlinux.lds.S to enable kexec 
>> based crashdumps.
>>...
>> --- linux-2.6.10-rc1/arch/i386/kernel/vmlinux.lds.S~kdump-fix-bss-compile-error	2004-10-28 15:15:43.000000000 +0530
>> +++ linux-2.6.10-rc1-hari/arch/i386/kernel/vmlinux.lds.S	2004-10-28 15:18:04.000000000 +0530
>> @@ -117,8 +117,9 @@ SECTIONS
>>    /* freed after init ends here */
>>  	
>>    __bss_start = .;		/* BSS */
>> +  .bss.page_aligned  : AT(ADDR(.bss.page_aligned) - LOAD_OFFSET) {
>> +	*(.bss.page_aligned) }
>>    .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
>> -	*(.bss.page_aligned)
>>  	*(.bss)
>>    }
>>    . = ALIGN(4);
> 
> 
> It's hard to see how that could go wrong.  Did you compare the before- and
> after- output from `objdump -h vmlinux'?
> 

The output of objdump for the bss related sections are as below..

Without patch - machine with newer binutils

  24 .bss          0002cf38  c03df000  003df000  002df000  2**12
                   ALLOC

With patch - machine with newer binutils

  24 .bss.page_aligned 00002000  c03df000  c03df000  002df000  2**2

  25 .bss          0002af38  c03e1000  003e1000  002df000  2**12
                   ALLOC

With patch - machine with old binutils

  24 .bss.page_aligned 00002000  c03df000  c03df000  002df000  2**2
                   CONTENTS
  25 .bss          0002af38  c03e1000  003e1000  002df000  2**12
                   ALLOC

Regards, Hari