On Wed, 2012-06-20 at 17:50 +1000, Stephen Rothwell wrote: > Hi all, > > After merging the final tree, today's linux-next build (powerpc > allyesconfig) failed like this: > > powerpc64-linux-ld: arch/powerpc/net/built-in.o: In function `bpf_slow_path_word': > (.text+0x90): sibling call optimization to `skb_copy_bits' does not allow automatic multiple TOCs; recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make `skb_copy_bits' extern Those seem to be caused because we don't have a nop after the call, meaning we can't patch the TOC pointer on the way back. Adding a nop fixes those. But, then I get 32,410 variants of this: powerpc64-linux-ld: /src/next/net/openvswitch/vport-netdev.c:189:(.text+0x89b990): sibling call optimization to `_restgpr0_28' does not allow automatic multiple TOCs; recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make `_restgpr0_28' extern And those are generated calls so I don't see how we can fix them. > I started building with gcc 4.6.3/binutils 2.22 today. gcc > 4.6.0/binutils 2.21 do not produce this error, it produces this instead > (which has been happening for a long time): > > powerpc64-linux-ld: TOC section size exceeds 64k So presumably there's some new error checking that we're hitting, I imagine it was always broken, but now it's being more explicit. I think we need some help from the toolchain experts, hi Alan :) cheers -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
