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(parent: 78ddb79) | patch
s390: report spectre mitigation via syslog
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 23 May 2018 16:22:19 +0000 (18:22 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 25 May 2018 14:46:06 +0000 (16:46 +0200)
commit8d2addd794f28028ded4289996424f04e0e9b150
tree203433ecb9b3ee6d0348df547b7d2b4e558bc3c4tree | snapshot
parent78ddb798862fca11ef01e304e8d0e0b4a496c20acommit | 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 | history
Linux kernels and configurations used by Zygo.