[S390] Add config option for z196 code generation.
Add a kernel config option for the IBM zEnterprise 196. This will
produce faster code on newer compilers using the -march=z196 option.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 7afc173..21a7030 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -287,6 +287,14 @@
machines such as the z990, z890, z900, z800, z9-109, z9-ec
and z9-bc.
+config MARCH_Z196
+ bool "IBM zEnterprise 196"
+ help
+ Select this to enable optimizations for IBM zEnterprise 196.
+ The kernel will be slightly faster but will not work on older
+ machines such as the z990, z890, z900, z800, z9-109, z9-ec,
+ z9-bc, z10-ec and z10-bc.
+
endchoice
config PACK_STACK