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(parent: 3e17958) | patch
s390: report spectre mitigation via syslog
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 27 Apr 2018 05:36:54 +0000 (07:36 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 29 Apr 2018 09:32:00 +0000 (11:32 +0200)
commit4a51204f8b38e5533d0abf110dc922210b2b5f62
treeb4df7ebaa66e80ce1dc6d473a18ad3a6ed23677dtree | snapshot (tar.gz zip)
parent3e17958c6b3159cebc09f24344176e9a12b15e30commit | diff
s390: report spectre mitigation via syslog

[ Upstream commit bc035599718412cfba9249aa713f90ef13f13ee9 ]

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>
arch/s390/kernel/nospec-branch.c diff | blob | blame | history