On Fri, Apr 20, 2018 at 9:34 AM, Nicholas Piggin <npiggin@xxxxxxxxx> wrote: > A few people have been interested in this again. And I promised > if it remains dead code it should be removed, so I would like to > have another try. > > I think I got snagged on the modules problem last time and did > not take the time to work it out, this time I just turned off the > compile options for modules (the linker option was never set anyway > so no loss). > > This includes some linker script catches and ideas from others, I > didn't documnt them all, but thanks for looking. This series works for me. v2 from Christophe was triggering a kernel panic (call stack mentioned set_pte_at...). So if needed: Tested-by: Mathieu Malaterre <malat@xxxxxxxxxx> Env: Mac Mini G4, with custom config. > I would be interested to help other archs get this working too, if > anybody needs some help. > > Thanks, > Nick > > Nicholas Piggin (4): > kbuild: Fix asm-generic/vmlinux.lds.h for > LD_DEAD_CODE_DATA_ELIMINATION > kbuild: LD_DEAD_CODE_DATA_ELIMINATION no > -ffunction-sections/-fdata-sections for module build > kbuild: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selectable if > enabled > powerpc: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selected > > Makefile | 4 +-- > arch/Kconfig | 15 ---------- > arch/powerpc/Kconfig | 1 + > arch/powerpc/kernel/vmlinux.lds.S | 22 +++++++------- > include/asm-generic/vmlinux.lds.h | 49 ++++++++++++++++++------------- > init/Kconfig | 27 +++++++++++++++++ > 6 files changed, 70 insertions(+), 48 deletions(-) > > -- > 2.17.0 >
