s390: report spectre mitigation via syslog

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[ Upstream commit bc03559971 ]

Add a boot message if either of the spectre defenses is active.
The message is
    "Spectre V2 mitigation: execute trampolines."
or  "Spectre V2 mitigation: limited branch prediction."

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Martin Schwidefsky 2018-04-27 07:36:40 +02:00 • committed by Greg Kroah-Hartman

parent 719b84c9ae

commit 68cb884e12

1 changed files with 10 additions and 0 deletions

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arch/s390/kernel/nospec-branch.c

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