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author | Maciej W. Rozycki | 2016-05-26 13:55:45 +0200 |
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committer | Ralf Baechle | 2016-05-28 12:35:12 +0200 |
commit | 94cc36b84acc29f543b48bc5ed786011b112a666 (patch) | |
tree | 0693da19d725a35b41593c67335cba5c70e4de99 /arch/mips/boot/dts | |
parent | MIPS: Pistachio: Enable KASLR (diff) | |
download | kernel-qcow2-linux-94cc36b84acc29f543b48bc5ed786011b112a666.tar.gz kernel-qcow2-linux-94cc36b84acc29f543b48bc5ed786011b112a666.tar.xz kernel-qcow2-linux-94cc36b84acc29f543b48bc5ed786011b112a666.zip |
MIPS: VDSO: Build with `-fno-strict-aliasing'
Avoid an aliasing issue causing a build error in VDSO:
In file included from include/linux/srcu.h:34:0,
from include/linux/notifier.h:15,
from ./arch/mips/include/asm/uprobes.h:9,
from include/linux/uprobes.h:61,
from include/linux/mm_types.h:13,
from ./arch/mips/include/asm/vdso.h:14,
from arch/mips/vdso/vdso.h:27,
from arch/mips/vdso/gettimeofday.c:11:
include/linux/workqueue.h: In function 'work_static':
include/linux/workqueue.h:186:2: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]
return *work_data_bits(work) & WORK_STRUCT_STATIC;
^
cc1: all warnings being treated as errors
make[2]: *** [arch/mips/vdso/gettimeofday.o] Error 1
with a CONFIG_DEBUG_OBJECTS_WORK configuration and GCC 5.2.0. Include
`-fno-strict-aliasing' along with compiler options used, as required for
kernel code, fixing a problem present since the introduction of VDSO
with commit ebb5e78cc634 ("MIPS: Initial implementation of a VDSO").
Thanks to Tejun for diagnosing this properly!
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Fixes: ebb5e78cc634 ("MIPS: Initial implementation of a VDSO")
Cc: Tejun Heo <tj@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org # v4.3+
Patchwork: https://patchwork.linux-mips.org/patch/13357/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/boot/dts')
0 files changed, 0 insertions, 0 deletions