Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-U10.2

[john cooper]

remi.colinet@xxxxxxx wrote:

> Hi,
>
>
> > I'm seeing an odd build error in the -U10.3 patch to 2.6.9-mm1:
> >
> >    <snip>
> >
> >  AS      arch/i386/boot/compressed/head.o
> >  CC      arch/i386/boot/compressed/misc.o
> >  OBJCOPY arch/i386/boot/compressed/vmlinux.bin
> > BFD: Warning: Writing section `.bss' to huge (ie negative) file offset
> > 0xc03ac000.
> > objcopy: arch/i386/boot/compressed/vmlinux.bin: File truncated
> > make[2]: *** [arch/i386/boot/compressed/vmlinux.bin] Error 1
> > make[1]: *** [arch/i386/boot/compressed/vmlinux] Error 2
> > make: *** [bzImage] Error 2
> >
> > [root@otaku linux-2.6.9]# objdump -f vmlinux
> >
> > vmlinux:     file format elf32-i386
> > architecture: i386, flags 0x00000112:
> > EXEC_P, HAS_SYMS, D_PAGED
> > start address 0x00100000
> >
> > This appears a result of changes in:
> >
> >   arch/i386/kernel/vmlinux.lds.S
> >
> > apparently for support of CONFIG_KERN_PHYS_OFFSET.
> > This causes the kernel LMA start address to
> > change from 0xc0100000 to 0x100000 and objcopy to
> > gag.  I rolled back to a 2.6.9-mm1 version of the
> > above linker map file and did get the kernel to
> > build and boot.
> >
> > Anyone else seeing this?  .config attached.
>
> Yes.
>
> You probably need to upgrade your binutil package. The .bss LMA start address
> section is not dealt the way it should by ld.
>
> An other (bad) way to work around this compile problem is to force the .bss LMA
> start address with the following OBJCOPYFLAGS at objcopy time.
>
> OBJCOPYFLAGS := -O binary --change-section-lma .bss-0xc0000000 -R .note -R
> .comment -S
>
> Hope this help,
> Remi
Already tried a recent (2.15) version of objcopy
with the same results.  But LD was the issue.
BTW the offending version of binutils was 2.13.

Thanks!

--
john.cooper@xxxxxxxxxxx

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