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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-10-25 16:10:17 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 16:10:15 +0200 |
| commit | f861e4057263033ad9134bfd6745f91b2165b351 (patch) | |
| tree | ea5778eed9c4a61c8b7571994d4d22c867741a17 | |
| parent | 7aca2eda5c2a45884ff0ce0bb1ebfa8f83c1e0f9 (diff) | |
[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>
| -rw-r--r-- | arch/s390/Kconfig | 8 | ||||
| -rw-r--r-- | arch/s390/Makefile | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/head.S | 8 |
3 files changed, 15 insertions, 2 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 7afc1734050..21a7030abbb 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -287,6 +287,14 @@ config MARCH_Z10 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 diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 9d318476f81..d5b8a6ade52 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -40,6 +40,7 @@ cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109) cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10) +cflags-$(CONFIG_MARCH_Z196) += $(call cc-option,-march=z196) #KBUILD_IMAGE is necessary for make rpm KBUILD_IMAGE :=arch/s390/boot/image diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index db1696e210a..7061398341d 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -488,7 +488,9 @@ startup: .align 16 2: .long 0x000a0000,0x8badcccc #if defined(CONFIG_64BIT) -#if defined(CONFIG_MARCH_Z10) +#if defined(CONFIG_MARCH_Z196) + .long 0xc100efe3, 0xf46c0000 +#elif defined(CONFIG_MARCH_Z10) .long 0xc100efe3, 0xf0680000 #elif defined(CONFIG_MARCH_Z9_109) .long 0xc100efc3, 0x00000000 @@ -498,7 +500,9 @@ startup: .long 0xc0000000, 0x00000000 #endif #else -#if defined(CONFIG_MARCH_Z10) +#if defined(CONFIG_MARCH_Z196) + .long 0x8100c880, 0x00000000 +#elif defined(CONFIG_MARCH_Z10) .long 0x8100c880, 0x00000000 #elif defined(CONFIG_MARCH_Z9_109) .long 0x8100c880, 0x00000000 |