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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-08-06 14:26:39 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-08-07 13:38:16 +0200 |
| commit | 26f843848bae973817b3587780ce6b7b0200d3e4 (patch) | |
| tree | 99617d15709b26b2906ab6f661b7bdd20bd8c597 /tools | |
| parent | s390/lib: use expoline for all bcr instructions (diff) | |
| download | linux-dev-26f843848bae973817b3587780ce6b7b0200d3e4.tar.xz linux-dev-26f843848bae973817b3587780ce6b7b0200d3e4.zip | |
s390: fix br_r1_trampoline for machines without exrl
For machines without the exrl instruction the BFP jit generates
code that uses an "br %r1" instruction located in the lowcore page.
Unfortunately there is a cut & paste error that puts an additional
"larl %r1,.+14" instruction in the code that clobbers the branch
target address in %r1. Remove the larl instruction.
Cc: <stable@vger.kernel.org> # v4.17+
Fixes: de5cb6eb51 ("s390: use expoline thunks in the BPF JIT")
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions