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kernel_optimize_test/arch/s390/lib
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Ilie Halip 27f4ce02b3 s390/test_unwind: use raw opcode instead of invalid instruction 
[ Upstream commit 53ae7230918154d1f4281d7aa3aae9650436eadf ]

Building with clang & LLVM_IAS=1 leads to an error:
    arch/s390/lib/test_unwind.c:179:4: error: invalid register pair
                        "       mvcl    %%r1,%%r1\n"
                        ^

The test creates an invalid instruction that would trap at runtime, but the
LLVM inline assembler tries to validate it at compile time too.

Use the raw instruction opcode instead.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Suggested-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1421
Link: https://lore.kernel.org/r/20211117174822.3632412-1-ilie.halip@gmail.com
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[hca@linux.ibm.com: use illegal opcode, and update comment]
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-12-17 10:14:39 +01:00
..
delay.c s390: fix irq state tracing 2020-12-02 18:17:50 +01:00
error-inject.c s390: enable HAVE_FUNCTION_ERROR_INJECTION 2020-07-27 10:33:28 +02:00
find.c
Makefile s390: enable HAVE_FUNCTION_ERROR_INJECTION 2020-07-27 10:33:28 +02:00
mem.S
probes.c
spinlock.c
string.c s390: fix strrchr() implementation 2021-10-20 11:44:58 +02:00
test_unwind.c s390/test_unwind: use raw opcode instead of invalid instruction 2021-12-17 10:14:39 +01:00
uaccess.c
xor.c