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authorNathan Chancellor <natechancellor@gmail.com>2021-01-04 13:59:53 -0700
committerMichael Ellerman <mpe@ellerman.id.au>2021-01-06 21:59:04 +1100
commit3ce47d95b7346dcafd9bed3556a8d072cb2b8571 (patch)
tree66813a5f602c1baa70e85d7b7903a6f9ff79edb4 /arch/arc/plat-hsdk/Kconfig
parent98bf2d3f4970179c702ef64db658e0553bc6ef3a (diff)
downloadlinux-stericsson-3ce47d95b7346dcafd9bed3556a8d072cb2b8571.tar.gz
powerpc: Handle .text.{hot,unlikely}.* in linker script
Commit eff8728fe698 ("vmlinux.lds.h: Add PGO and AutoFDO input sections") added ".text.unlikely.*" and ".text.hot.*" due to an LLVM change [1]. After another LLVM change [2], these sections are seen in some PowerPC builds, where there is a orphan section warning then build failure: $ make -skj"$(nproc)" \ ARCH=powerpc CROSS_COMPILE=powerpc64le-linux-gnu- LLVM=1 O=out \ distclean powernv_defconfig zImage.epapr ld.lld: warning: kernel/built-in.a(panic.o):(.text.unlikely.) is being placed in '.text.unlikely.' ... ld.lld: warning: address (0xc000000000009314) of section .text is not a multiple of alignment (256) ... ERROR: start_text address is c000000000009400, should be c000000000008000 ERROR: try to enable LD_HEAD_STUB_CATCH config option ERROR: see comments in arch/powerpc/tools/head_check.sh ... Explicitly handle these sections like in the main linker script so there is no more build failure. [1]: https://reviews.llvm.org/D79600 [2]: https://reviews.llvm.org/D92493 Fixes: 83a092cf95f2 ("powerpc: Link warning for orphan sections") Cc: stable@vger.kernel.org Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://github.com/ClangBuiltLinux/linux/issues/1218 Link: https://lore.kernel.org/r/20210104205952.1399409-1-natechancellor@gmail.com
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