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objtool: Remove --no-unreachable for noinstr-only vmlinux.o runs

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For (!X86_KERNEL_IBT && !LTO_CLANG && NOINSTR_VALIDATION), objtool runs
on both translation units and vmlinux.o.  The vmlinux.o run only does
noinstr/noret validation.  In that case --no-unreachable has no effect.
Remove it.

Note that for ((X86_KERNEL_IBT || LTO_CLANG) && KCOV), --no-unreachable
still gets set in objtool-args-y by scripts/Makefile.lib.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/05414246a0124db2f21b0d071b652aa9043d039d.1742852847.git.jpoimboe@kernel.org
This commit is contained in:
Josh Poimboeuf 2025-03-24 14:56:02 -07:00 • committed by Ingo Molnar
parent 24fe172b50
commit 876a4bce38
1 changed files with 0 additions and 1 deletions
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1
scripts/Makefile.vmlinux_o
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@ -44,7 +44,6 @@ else
vmlinux-objtool-args-$(CONFIG_OBJTOOL_WERROR) += --Werror
endif
vmlinux-objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable
vmlinux-objtool-args-$(CONFIG_NOINSTR_VALIDATION) += --noinstr \
$(if $(or $(CONFIG_MITIGATION_UNRET_ENTRY),$(CONFIG_MITIGATION_SRSO)), --unret)