diff options
author | Vasily Gorbik <gor@linux.ibm.com> | 2021-05-19 16:03:13 +0300 |
---|---|---|
committer | Josh Poimboeuf <jpoimboe@redhat.com> | 2021-05-19 23:30:59 +0300 |
commit | c199f64ff93c48a45add92eee4456ffcabfc838e (patch) | |
tree | b5de0c0d2863dd48b9ad50f9e15d3259b0b44ad4 /include/linux/compiler_attributes.h | |
parent | f1069a8756b9e9f6c055e709740d2d66650f0fb0 (diff) | |
download | linux-c199f64ff93c48a45add92eee4456ffcabfc838e.tar.xz |
instrumentation.h: Avoid using inline asm operand modifiers
The expansion of instrumentation_begin/instrumentation_end on s390 will
result in a compiler error if the __COUNTER__ value is high enough.
For example with "i" (154) the "%c0" operand of annotate_reachable
will be expanded to -102:
-102:
.pushsection .discard.instr_begin
.long -102b - .
.popsection
This is a quirk of the gcc backend for s390, it interprets the %c0
as a signed byte value. Avoid using operand modifiers in this case
by simply converting __COUNTER__ to string, with the same result,
but in an arch assembler independent way.
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/patch-2.thread-1a26be.git-1a26be80cb18.your-ad-here.call-01621428935-ext-2104@work.hours
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Borislav Petkov <bp@suse.de>
Cc: linux-kernel@vger.kernel.org
Diffstat (limited to 'include/linux/compiler_attributes.h')
0 files changed, 0 insertions, 0 deletions