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s390: Allow to compile with z17 optimizations

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Add config and compile options which allow to compile with z17
optimizations if the compiler supports it. Add the
miscellaneous-instruction-extension 4 facility to the list of facilities
for z17.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2024-08-26 22:13:47 +02:00 committed by Heiko Carstens
parent 8231a0e632
commit c51ea9888e
4 changed files with 28 additions and 0 deletions
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19
arch/s390/Kconfig
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@ -332,6 +332,10 @@ config HAVE_MARCH_Z16_FEATURES
def_bool n
select HAVE_MARCH_Z15_FEATURES
config HAVE_MARCH_Z17_FEATURES
def_bool n
select HAVE_MARCH_Z16_FEATURES
choice
prompt "Processor type"
default MARCH_Z196
@ -397,6 +401,14 @@ config MARCH_Z16
Select this to enable optimizations for IBM z16 (3931 and
3932 series).
config MARCH_Z17
bool "IBM z17"
select HAVE_MARCH_Z17_FEATURES
depends on $(cc-option,-march=z17)
help
Select this to enable optimizations for IBM z17 (9175 and
9176 series).
endchoice
config MARCH_Z10_TUNE
@ -420,6 +432,9 @@ config MARCH_Z15_TUNE
config MARCH_Z16_TUNE
def_bool TUNE_Z16 || MARCH_Z16 && TUNE_DEFAULT
config MARCH_Z17_TUNE
def_bool TUNE_Z17 || MARCH_Z17 && TUNE_DEFAULT
choice
prompt "Tune code generation"
default TUNE_DEFAULT
@ -464,6 +479,10 @@ config TUNE_Z16
bool "IBM z16"
depends on $(cc-option,-mtune=z16)
config TUNE_Z17
bool "IBM z17"
depends on $(cc-option,-mtune=z17)
endchoice
config 64BIT

2
arch/s390/Makefile
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@ -48,6 +48,7 @@ mflags-$(CONFIG_MARCH_Z13) := -march=z13
mflags-$(CONFIG_MARCH_Z14) := -march=z14
mflags-$(CONFIG_MARCH_Z15) := -march=z15
mflags-$(CONFIG_MARCH_Z16) := -march=z16
mflags-$(CONFIG_MARCH_Z17) := -march=z17
export CC_FLAGS_MARCH := $(mflags-y)
@ -61,6 +62,7 @@ cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14
cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15
cflags-$(CONFIG_MARCH_Z16_TUNE) += -mtune=z16
cflags-$(CONFIG_MARCH_Z17_TUNE) += -mtune=z17
cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include

4
arch/s390/include/asm/march.h
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@ -33,6 +33,10 @@
#define MARCH_HAS_Z16_FEATURES 1
#endif
#ifdef CONFIG_HAVE_MARCH_Z17_FEATURES
#define MARCH_HAS_Z17_FEATURES 1
#endif
#endif /* __DECOMPRESSOR */
#endif /* __ASM_S390_MARCH_H */

3
arch/s390/tools/gen_facilities.c
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@ -53,6 +53,9 @@ static struct facility_def facility_defs[] = {
#endif
#ifdef CONFIG_HAVE_MARCH_Z15_FEATURES
61, /* miscellaneous-instruction-extension 3 */
#endif
#ifdef CONFIG_HAVE_MARCH_Z17_FEATURES
84, /* miscellaneous-instruction-extension 4 */
#endif
-1 /* END */
}