s390: Allow to compile with z17 optimizations

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>

Author: Vasily Gorbik

arch/s390/Kconfig

@@ -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

arch/s390/Makefile

@@ -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
 

arch/s390/include/asm/march.h

@@ -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 */

arch/s390/tools/gen_facilities.c

@@ -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 */
 		}