On Tue, 23 Oct 2007 14:02:31 +1000 Stephen Rothwell [EMAIL PROTECTED] wrote:
This was first noted with the -mm tree, but has now migrated into Linus'
tree.
Yeah, sorry, I didn't know what to do about that. I'm not even sure which
patch caused it.
An allyesconfig build dies in the link stage like this:
/usr/bin/ld: arch/powerpc/kernel/head_64.o(.text+0x80c8): sibling call
optimization to `.text.init.refok' does not allow automatic multiple TOCs;
recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make
`.text.init.refok' extern
/usr/bin/ld: arch/powerpc/kernel/head_64.o(.text+0x8160): sibling call
optimization to `.text.init.refok' does not allow automatic multiple TOCs;
recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make
`.text.init.refok' extern
/usr/bin/ld: arch/powerpc/kernel/head_64.o(.text+0x81c4): sibling call
optimization to `.text.init.refok' does not allow automatic multiple TOCs;
recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make
`.text.init.refok' extern
/usr/bin/ld: final link failed: Bad value
We already compile with -mminimal-toc and adding
-fno-optimize-sibling-call did not help.
Intuiting the obvious, I changed all the _INIT_STATIC and _INIT_GLOBAL
uses in head_64.S back to _STATIC and _GLOBAL (which just moves the code
from .text.init.refok to .text). Now the linker segfaults instead. :-)
/bin/sh: line 1: 5260 Segmentation fault ld -m elf64ppc -Bstatic
--emit-relocs --build-id -o .tmp_vmlinux1 -T arch/powerpc/kernel/vmlinux.lds
arch/powerpc/kernel/head_64.o arch/powerpc/kernel/entry_64.o
arch/powerpc/kernel/fpu.o init/built-in.o --start-group usr/built-in.o
arch/powerpc/kernel/built-in.o arch/powerpc/mm/built-in.o
arch/powerpc/lib/built-in.o arch/powerpc/sysdev/built-in.o
arch/powerpc/platforms/built-in.o arch/powerpc/xmon/built-in.o
kernel/built-in.o mm/built-in.o fs/built-in.o ipc/built-in.o
security/built-in.o crypto/built-in.o block/built-in.o lib/lib.a
lib/built-in.o drivers/built-in.o sound/built-in.o
arch/powerpc/oprofile/built-in.o net/built-in.o --end-group
make[1]: *** [.tmp_vmlinux1] Error 139
$ ld --version
GNU ld (GNU Binutils for Debian) 2.18
I take this as an improvement :-)
We link .text.init.refok immediately after .text, but with
allyesconfig, .text ends up very large.
The --emit-relocs is a product of something else I am working on. So I
took that out and now get a whole lot more messages like:
/usr/bin/ld: net/built-in.o(.fixup+0x4): sibling call optimization to `.text'
does not allow automatic multiple TOCs; recompile with -mminimal-toc or
-fno-optimize-sibling-calls, or make `.text' extern
/usr/bin/ld: net/built-in.o(.fixup+0xc): sibling call optimization to `.text'
does not allow automatic multiple TOCs; recompile with -mminimal-toc or
-fno-optimize-sibling-calls, or make `.text' extern
Anyone have any ideas?
I still don't know ;)
What did we do which caused all this to start happening?
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