diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2018-04-27 07:36:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-29 07:50:02 +0200 |
| commit | 243f3abcfd64a5cfa774eb32aa0a349693bf6eaa (patch) | |
| tree | 70852564a87c3ee37ab844971362046f931bcd67 /arch/s390/Kconfig | |
| parent | 4eaf8dace704fb5392b330a01dbf579d3190b0b3 (diff) | |
s390: enable CPU alternatives unconditionally
[ Upstream commit 049a2c2d486e8cc82c5cd79fa479c5b105b109e9 ]
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>
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 | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 89eb54f9f7d6..04f0d2e89186 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -705,22 +705,6 @@ config SECCOMP 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 "Power Management" |