diff options
author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-04-27 07:36:53 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-29 11:31:59 +0200 |
commit | 3e17958c6b3159cebc09f24344176e9a12b15e30 (patch) | |
tree | 3778607d6f0338c5df36a5ba9e1b8f4c982de329 /arch/s390/Kconfig | |
parent | 2afb4e9dfc0a44a4b616e4461fbf972e5ad4b0fe (diff) |
s390: add automatic detection of the spectre defense
[ Upstream commit 6e179d64126b909f0b288fa63cdbf07c531e9b1d ]
Automatically decide between nobp vs. expolines if the spectre_v2=auto
kernel parameter is specified or CONFIG_EXPOLINE_AUTO=y is set.
The decision made at boot time due to CONFIG_EXPOLINE_AUTO=y being set
can be overruled with the nobp, nospec and spectre_v2 kernel parameters.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r-- | arch/s390/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index c88bb4a50db7..fbb8fca6f9c2 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -741,7 +741,7 @@ choice config EXPOLINE_OFF bool "spectre_v2=off" -config EXPOLINE_MEDIUM +config EXPOLINE_AUTO bool "spectre_v2=auto" config EXPOLINE_FULL |