Re: [Suggestion] PowerPC: kernel: cross compiling issue with allmodconfig

Michael Neuling
2013-03-15T04:52:58Z

> do next-* tree support powerpc POWER7 with allmodconfig ?
>
> I met an issue, can we bear it (or I need additional trying) ?
>
>
> Compiling:
> make V=1 EXTRA_CFLAGS=-W ARCH=powerpc allmodconfig
> set cpu type POWER7 in menuconfig.
> set cross-compiler in menuconfig.
> under Fedora 16 x86_64 laptop
> /usr/bin/powerpc64-linux-gnu-gcc -v
> gcc version 4.7.1 20120606 (Red Hat 4.7.1-0.1.20120606) (GCC)
>
> Issue:
> error:
> /android/public-kernel/linux-next/arch/powerpc/kernel/exceptions-64s.S: Assembler messages:
> /android/public-kernel/linux-next/arch/powerpc/kernel/exceptions-64s.S:1304: Error: attempt to move .org backwards
>
> command:
> powerpc64-linux-gnu-gcc -m64 -Wp,-MD,arch/powerpc/kernel/.head_64.o.d -nostdinc -isystem /usr/lib/gcc/powerpc64-linux-gnu/4.7.1/include -I/android/public-kernel/linux-next/arch/powerpc/include -Iarch/powerpc/include/generated -I/android/public-kernel/linux-next/include -Iinclude -I/android/public-kernel/linux-next/arch/powerpc/include/uapi -Iarch/powerpc/include/generated/uapi -I/android/public-kernel/linux-next/include/uapi -Iinclude/generated/uapi -include /android/public-kernel/linux-next/include/linux/kconfig.h -D__KERNEL__ -I/android/public-kernel/linux-next/arch/powerpc -Iarch/powerpc -D__ASSEMBLY__ -I/android/public-kernel/linux-next/arch/powerpc -Iarch/powerpc -Wa,-maltivec -gdwarf-2 -c -o arch/powerpc/kernel/head_64.o /android/public-kernel/linux-next/arch/powerpc/kernel/head_64.S
>
> (head_64.S includes exceptions-64.S)

Yep it's a known problem but no one has bothered to fix it since it
doesn't happen in a config that anyone cares about like
pseries_defconfig and ppc64_defconfig. We've been moving code around in
this area a lot recently hence the breakage.

It should be fixed though. Patches welcome. :-)

Mikey