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linux/tools/objtool
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Nathan Chancellor 26a9f90b61 objtool: Ignore __pi___cfi_ prefixed symbols 
When building with CONFIG_CFI_CLANG=y after the recent series to
separate the x86 startup code, there are objtool warnings along the
lines of:

  vmlinux.o: warning: objtool: __pi___cfi_startup_64_load_idt() falls through to next function __pi_startup_64_load_idt()
  vmlinux.o: warning: objtool: __pi___cfi_startup_64_setup_gdt_idt() falls through to next function __pi_startup_64_setup_gdt_idt()
  vmlinux.o: warning: objtool: __pi___cfi___startup_64() falls through to next function __pi___startup_64()

As the comment in validate_branch() states, this is expected, so ignore
these symbols in the same way that __cfi_ and __pfx_ symbols are already
ignored for the rest of the kernel.

Fixes: 7b38dec3c5 ("x86/boot: Create a confined code area for startup code")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
2025-09-09 12:02:01 +02:00
..
arch objtool: Add action to check for absence of absolute relocations 2025-09-03 17:59:51 +02:00
Documentation objtool: Fix up some outdated references to ENTRY/ENDPROC 2025-03-25 09:20:27 +01:00
include/objtool objtool: Add action to check for absence of absolute relocations 2025-09-03 17:59:51 +02:00
.gitignore objtool: Install libsubcmd in build 2023-01-30 16:27:46 -08:00
Build objtool: Install libsubcmd in build 2023-01-30 16:27:46 -08:00
builtin-check.c objtool: Add action to check for absence of absolute relocations 2025-09-03 17:59:51 +02:00
check.c objtool: Ignore __pi___cfi_ prefixed symbols 2025-09-09 12:02:01 +02:00
elf.c objtool: Speed up SHT_GROUP reindexing 2025-05-14 13:09:02 +02:00
Makefile objtool: Hide unnecessary compiler error message 2025-03-12 15:43:38 -07:00
noreturns.h x86/sev: Zap snp_abort() 2025-09-04 13:15:59 +02:00
objtool.c objtool: Change "warning:" to "error: " for fatal errors 2025-04-01 09:07:13 +02:00
orc_dump.c objtool: Change "warning:" to "error: " for fatal errors 2025-04-01 09:07:13 +02:00
orc_gen.c objtool/x86: Separate arch-specific and generic parts 2024-03-11 22:23:47 +08:00
special.c objtool: Change "warning:" to "error: " for fatal errors 2025-04-01 09:07:13 +02:00
sync-check.sh objtool: Add objtool_types.h 2023-03-23 23:18:56 +01:00
weak.c objtool: Ditch subcommands 2022-04-22 12:32:01 +02:00