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893ab00439
Some Makefiles already pass -fno-stack-protector unconditionally. For example, arch/arm64/kernel/vdso/Makefile, arch/x86/xen/Makefile. No problem report so far about hard-coding this option. So, we can assume all supported compilers know -fno-stack-protector. GCC 4.8 and Clang support this option (https://godbolt.org/z/_HDGzN) Get rid of cc-option from -fno-stack-protector. Remove CONFIG_CC_HAS_STACKPROTECTOR_NONE, which is always 'y'. Note: arch/mips/vdso/Makefile adds -fno-stack-protector twice, first unconditionally, and second conditionally. I removed the second one. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
25 lines
796 B
Makefile
25 lines
796 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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CFLAGS_bootx_init.o += -fPIC
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CFLAGS_bootx_init.o += -fno-stack-protector
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KASAN_SANITIZE_bootx_init.o := n
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ifdef CONFIG_KASAN
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CFLAGS_bootx_init.o += -DDISABLE_BRANCH_PROFILING
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endif
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ifdef CONFIG_FUNCTION_TRACER
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# Do not trace early boot code
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CFLAGS_REMOVE_bootx_init.o = $(CC_FLAGS_FTRACE)
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endif
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obj-y += pic.o setup.o time.o feature.o pci.o \
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sleep.o low_i2c.o cache.o pfunc_core.o \
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pfunc_base.o udbg_scc.o udbg_adb.o
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obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o
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# CONFIG_NVRAM is an arch. independent tristate symbol, for pmac32 we really
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# need this to be a bool. Cheat here and pretend CONFIG_NVRAM=m is really
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# CONFIG_NVRAM=y
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obj-$(CONFIG_NVRAM:m=y) += nvram.o
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obj-$(CONFIG_PPC32) += bootx_init.o
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obj-$(CONFIG_SMP) += smp.o
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