diff options
author | Nathan Chancellor <natechancellor@gmail.com> | 2021-01-04 13:59:53 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 20:18:17 +0100 |
commit | cb5a170e979e7d1b15185c9943c546bda2bc6445 (patch) | |
tree | 29caa4535770e8dbce64bdbbbec1a0f030daaa9e /drivers/staging | |
parent | 80a364421c95fefd43c9a310d86e01e0febc0e0c (diff) |
powerpc: Handle .text.{hot,unlikely}.* in linker script
commit 3ce47d95b7346dcafd9bed3556a8d072cb2b8571 upstream.
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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
0 files changed, 0 insertions, 0 deletions