Re: [PATCH v6 1/9] Makefile: Prepare for using macros for inline asm

[Ingo Molnar]

* Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> wrote:

> 2018-06-23 2:22 GMT+09:00 Nadav Amit <namit@xxxxxxxxxx>:
> > Using macros for inline assembly improves both readability and
> > compilation decisions that are distorted by big assembly blocks that use
> > alternative sections. Compile macros.S and use it to assemble all C
> > files. Currently, only x86 will use it.
> >
> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> > Cc: Michal Marek <michal.lkml@xxxxxxxxxxx>
> > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> > Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
> > Cc: x86@xxxxxxxxxx
> > Cc: linux-kbuild@xxxxxxxxxxxxxxx
> > Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> > Signed-off-by: Nadav Amit <namit@xxxxxxxxxx>
> > ---
> 
> 
> 
> Acked-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> 
> 
> 
> 
> >  Makefile                 |  9 +++++++--
> >  arch/x86/Makefile        | 11 +++++++++--
> >  arch/x86/kernel/macros.S |  7 +++++++
> >  scripts/Kbuild.include   |  4 +++-
> >  scripts/mod/Makefile     |  2 ++
> >  5 files changed, 28 insertions(+), 5 deletions(-)
> >  create mode 100644 arch/x86/kernel/macros.S

So this patch appears to break the xtensa cross-build on my system, with an older 
version of crosstools:

  MODPOST vmlinux.o
/home/mingo/crosstool-korg/bin//gcc-4.9.0-nolibc/xtensa-linux/bin/xtensa-linux-ld:./arch/xtensa/kernel/vmlinux.lds:430: 
syntax error
/home/mingo/tip/Makefile:1010: recipe for target 'vmlinux' failed
make[1]: *** [vmlinux] Error 1
make[1]: Leaving directory '/dev/shm/tip/build'
Makefile:146: recipe for target 'sub-make' failed

Thanks,

	Ingo