The following commit has been merged into the core/build branch of tip: Commit-ID: 83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d Gitweb: https://git.kernel.org/tip/83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d Author: Kees Cook <keesc...@chromium.org> AuthorDate: Tue, 01 Sep 2020 19:53:46 -07:00 Committer: Ingo Molnar <mi...@kernel.org> CommitterDate: Thu, 03 Sep 2020 10:28:36 +02:00
x86/build: Warn on orphan section placement We don't want to depend on the linker's orphan section placement heuristics as these can vary between linkers, and may change between versions. All sections need to be explicitly handled in the linker script. Now that all sections are explicitly handled, enable orphan section warnings. Signed-off-by: Kees Cook <keesc...@chromium.org> Signed-off-by: Ingo Molnar <mi...@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulni...@google.com> Link: https://lore.kernel.org/r/20200902025347.2504702-5-keesc...@chromium.org --- arch/x86/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 4346ffb..154259f 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -209,6 +209,10 @@ ifdef CONFIG_X86_64 LDFLAGS_vmlinux += -z max-page-size=0x200000 endif +# We never want expected sections to be placed heuristically by the +# linker. All sections should be explicitly named in the linker script. +LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn) + archscripts: scripts_basic $(Q)$(MAKE) $(build)=arch/x86/tools relocs
