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| author | Kees Cook <keescook@chromium.org> | 2020-09-02 05:53:46 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-09-03 11:28:36 +0300 |
| commit | 83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d (patch) | |
| tree | 0de659a8f2f4500bb1cec273df0f357406821aac | |
| parent | 4409d2f8dfe7d5088567d4ba00133f876ee586c7 (diff) | |
| download | linux-83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d.tar.xz | |
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 <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20200902025347.2504702-5-keescook@chromium.org
| -rw-r--r-- | arch/x86/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 4346ffb2e39f..154259f18b8b 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 |