diff options
| author |   Ard Biesheuvel <ardb@kernel.org> | 2025-04-08 10:52:56 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2025-04-09 11:59:03 +0200 |
| commit | d9fa398fe82728ee703ad2bd9cf5247df9626470 (patch) | |
| tree | 084cd584addc3f233f33d149e62314df0f3616ef | |
| parent | x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/ (diff) | |
| download | wireguard-linux-d9fa398fe82728ee703ad2bd9cf5247df9626470.tar.xz wireguard-linux-d9fa398fe82728ee703ad2bd9cf5247df9626470.zip | |
x86/boot/startup: Disable objtool validation for library code
The library code built under arch/x86/boot/startup is not intended to be
linked into vmlinux but only into the decompressor and/or the EFI stub.
This means objtool validation is not needed here, and may result in
false positive errors for things like missing retpolines.
So disable it for all objects added to lib-y
Tested-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20250408085254.836788-10-ardb+git@google.com
| -rw-r--r-- | arch/x86/boot/startup/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/boot/startup/Makefile b/arch/x86/boot/startup/Makefile index 73946a3f6b3b..8919a1cbcb5a 100644 --- a/arch/x86/boot/startup/Makefile +++ b/arch/x86/boot/startup/Makefile @@ -4,3 +4,9 @@ KBUILD_AFLAGS += -D__DISABLE_EXPORTS lib-$(CONFIG_X86_64) += la57toggle.o lib-$(CONFIG_EFI_MIXED) += efi-mixed.o + +# +# Disable objtool validation for all library code, which is intended +# to be linked into the decompressor or the EFI stub but not vmlinux +# +$(patsubst %.o,$(obj)/%.o,$(lib-y)): OBJECT_FILES_NON_STANDARD := y |