Hi Michael, On Tue, 21 Apr 2015 19:41:52 +1000 Michael Ellerman <m...@ellerman.id.au> wrote: > > The only little endian configuration we support is ppc64le. As such if > we're building little endian we don't need a 32-bit VDSO, because there > is no 32-bit userspace. > > This patch is a fairly ugly mess of #ifdefs, but is the minimal logic > required to disable the 32-bit VDSO. We can hopefully clean up the > result in future with some further refactoring. > > Signed-off-by: Michael Ellerman <m...@ellerman.id.au> > --- > arch/powerpc/kernel/Makefile | 3 ++- > arch/powerpc/kernel/signal_32.c | 11 ++++++++-- > arch/powerpc/kernel/vdso.c | 38 > +++++++++++++++++++++++++++++++++- > arch/powerpc/perf/callchain.c | 5 +++++ > arch/powerpc/platforms/Kconfig.cputype | 10 +++++++++ > 5 files changed, 63 insertions(+), 4 deletions(-)
I think you could avoid the patches to signal_32.c and callchain.c by
defining vdso32{,_rt}_sigtramp to be 0 in
arch/powerpc/include/asm/vdso.h. There may be other similar fixes.
--
Cheers,
Stephen Rothwell s...@canb.auug.org.au
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