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d2dcd3e374
Clang incorrectly inlines functions with differing stack protector attributes, which breaks __restore_processor_state() that relies on stack protector being disabled. This change disables LTO for cpu.c to work aroung the bug. Link: https://bugs.llvm.org/show_bug.cgi?id=47479 Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
14 lines
542 B
Makefile
14 lines
542 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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OBJECT_FILES_NON_STANDARD_hibernate_asm_$(BITS).o := y
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# __restore_processor_state() restores %gs after S3 resume and so should not
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# itself be stack-protected
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CFLAGS_cpu.o := -fno-stack-protector
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# Clang may incorrectly inline functions with stack protector enabled into
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# __restore_processor_state(): https://bugs.llvm.org/show_bug.cgi?id=47479
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CFLAGS_REMOVE_cpu.o := $(CC_FLAGS_LTO)
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obj-$(CONFIG_PM_SLEEP) += cpu.o
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obj-$(CONFIG_HIBERNATION) += hibernate_$(BITS).o hibernate_asm_$(BITS).o hibernate.o
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