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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-11-14 15:20:24 +0100 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-11-14 22:08:12 +0100 |
| commit | 049a2c2d486e8cc82c5cd79fa479c5b105b109e9 (patch) | |
| tree | 733a9f508b2700c9a41f9efec9283a48b68cb526 /arch/s390/Kconfig | |
| parent | s390/nmi: remove unused code (diff) | |
| download | linux-049a2c2d486e8cc82c5cd79fa479c5b105b109e9.tar.xz linux-049a2c2d486e8cc82c5cd79fa479c5b105b109e9.zip | |
s390: enable CPU alternatives unconditionally
Remove the CPU_ALTERNATIVES config option and enable the code
unconditionally. The config option was only added to avoid a conflict
with the named saved segment support. Since that code is gone there is
no reason to keep the CPU_ALTERNATIVES config option.
Just enable it unconditionally to also reduce the number of config
options and make it less likely that something breaks.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index f5beccbe74d8..84767046daff 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -539,22 +539,6 @@ config ARCH_RANDOM If unsure, say Y. -config ALTERNATIVES - def_bool y - prompt "Patch optimized instructions for running CPU type" - help - When enabled the kernel code is compiled with additional - alternative instructions blocks optimized for newer CPU types. - These alternative instructions blocks are patched at kernel boot - time when running CPU supports them. This mechanism is used to - optimize some critical code paths (i.e. spinlocks) for newer CPUs - even if kernel is build to support older machine generations. - - This mechanism could be disabled by appending "noaltinstr" - option to the kernel command line. - - If unsure, say Y. - endmenu menu "Memory setup" |