s390/kernel: use expoline for indirect branches

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[ Upstream commit c50c84c3ac ]

The assember code in arch/s390/kernel uses a few more indirect branches
which need to be done with execute trampolines for CONFIG_EXPOLINE=y.

Cc: stable@vger.kernel.org # 4.16
Fixes: f19fbd5ed6 ("s390: introduce execute-trampolines for branches")
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Martin Schwidefsky 2018-05-23 18:22:06 +02:00 • committed by Greg Kroah-Hartman

parent f1bd3b9960

commit 2a146a9b32

3 changed files with 25 additions and 16 deletions

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24

arch/s390/kernel/base.S

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7

arch/s390/kernel/reipl.S

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10

arch/s390/kernel/swsusp.S

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