s390: move spectre sysfs attribute code

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[ Upstream commit 4253b0e062 ]

The nospec-branch.c file is compiled without the gcc options to
generate expoline thunks. The return branch of the sysfs show
functions cpu_show_spectre_v1 and cpu_show_spectre_v2 is an indirect
branch as well. These need to be compiled with expolines.

Move the sysfs functions for spectre reporting to a separate file
and loose an '.' for one of the messages.

Cc: stable@vger.kernel.org # 4.16
Fixes: d424986f1d ("s390: add sysfs attributes for spectre")
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 18:22:07 +02:00 • committed by Greg Kroah-Hartman

parent 2a146a9b32

commit a206c82f9b

3 changed files with 22 additions and 18 deletions

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1

arch/s390/kernel/Makefile

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18

arch/s390/kernel/nospec-branch.c

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21

arch/s390/kernel/nospec-sysfs.c

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