add new system file

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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/s390/Makefile
..
..
@@ -16,19 +16,35 @@
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 KBUILD_CFLAGS_MODULE += -fPIC
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 KBUILD_AFLAGS	+= -m64
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 KBUILD_CFLAGS	+= -m64
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+ifeq ($(CONFIG_RELOCATABLE),y)
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+KBUILD_CFLAGS	+= -fPIE
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+LDFLAGS_vmlinux	:= -pie
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+endif
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 aflags_dwarf	:= -Wa,-gdwarf-2
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-KBUILD_AFLAGS_DECOMPRESSOR := -m64 -D__ASSEMBLY__
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+KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__
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 KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
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-KBUILD_CFLAGS_DECOMPRESSOR := -m64 -O2
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+KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2
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 KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
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 KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float
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 KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables
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-KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-option,-ffreestanding)
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+KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding
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+KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector
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+KBUILD_CFLAGS_DECOMPRESSOR += -fPIE
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 KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member)
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 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g)
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 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))
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+
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+ifdef CONFIG_CC_IS_GCC
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+	ifeq ($(call cc-ifversion, -ge, 1200, y), y)
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+		ifeq ($(call cc-ifversion, -lt, 1300, y), y)
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+			KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds)
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+			KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, array-bounds)
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+		endif
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+	endif
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+endif
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+
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 UTS_MACHINE	:= s390x
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-STACK_SIZE	:= 16384
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+STACK_SIZE	:= $(if $(CONFIG_KASAN),65536,16384)
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 CHECKFLAGS	+= -D__s390__ -D__s390x__
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 export LD_BFD
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@@ -41,6 +57,7 @@
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 mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
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 mflags-$(CONFIG_MARCH_Z13)    := -march=z13
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 mflags-$(CONFIG_MARCH_Z14)    := -march=z14
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+mflags-$(CONFIG_MARCH_Z15)    := -march=z15
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 export CC_FLAGS_MARCH := $(mflags-y)
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..
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@@ -55,6 +72,7 @@
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 cflags-$(CONFIG_MARCH_ZEC12_TUNE)	+= -mtune=zEC12
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 cflags-$(CONFIG_MARCH_Z13_TUNE)		+= -mtune=z13
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 cflags-$(CONFIG_MARCH_Z14_TUNE)		+= -mtune=z14
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+cflags-$(CONFIG_MARCH_Z15_TUNE)		+= -mtune=z15
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 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
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..
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@@ -112,7 +130,7 @@
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 cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1)
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 KBUILD_CFLAGS	+= -mbackchain -msoft-float $(cflags-y)
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-KBUILD_CFLAGS	+= -pipe -fno-strength-reduce -Wno-sign-compare
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+KBUILD_CFLAGS	+= -pipe -Wno-sign-compare
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 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables $(cfi)
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 KBUILD_AFLAGS	+= $(aflags-y) $(cfi)
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 export KBUILD_AFLAGS_DECOMPRESSOR
..
..
@@ -151,7 +169,6 @@
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 vdso_install:
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 	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
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-	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
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 archclean:
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 	$(Q)$(MAKE) $(clean)=$(boot)