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kbuild: Fixup the IBT kbuild changes

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Masahiro-san deemed my kbuild changes to support whole module objtool
runs too terrible to live and gracefully provided an alternative.

Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/CAK7LNAQ2mYMnOKMQheVi+6byUFE3KEkjm1zcndNUfe0tORGvug@mail.gmail.com
This commit is contained in:
Peter Zijlstra
2022-03-18 12:19:27 +01:00
parent 9cea0d46f5
commit d31ed5d767
3 changed files with 27 additions and 55 deletions
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scripts/Makefile.lib
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@@ -230,11 +230,11 @@ dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \
$(addprefix -I,$(DTC_INCLUDE)) \
-undef -D__DTS__
ifeq ($(CONFIG_LTO_CLANG),y)
ifneq ($(CONFIG_LTO_CLANG)$(CONFIG_X86_KERNEL_IBT),)
# With CONFIG_LTO_CLANG, .o files in modules might be LLVM bitcode, so we
# need to run LTO to compile them into native code (.lto.o) before further
# processing.
mod-prelink-ext := .lto
mod-prelink-ext := .prelink
endif
# Useful for describing the dependency of composite objects