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Message-Id: <20250923213120.make.332-kees@kernel.org> Date: Tue, 23 Sep 2025 14:34:16 -0700 From: Kees Cook <kees@...nel.org> To: Nathan Chancellor <nathan@...nel.org> Cc: Kees Cook <kees@...nel.org>, Sami Tolvanen <samitolvanen@...gle.com>, Nicolas Schier <nicolas.schier@...ux.dev>, Vegard Nossum <vegard.nossum@...cle.com>, Masahiro Yamada <masahiroy@...nel.org>, Jonathan Corbet <corbet@....net>, Randy Dunlap <rdunlap@...radead.org>, Arnd Bergmann <arnd@...db.de>, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Linus Walleij <linus.walleij@...aro.org>, Mark Rutland <mark.rutland@....com>, Peter Zijlstra <peterz@...radead.org>, Puranjay Mohan <puranjay@...nel.org>, linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, linux-doc@...r.kernel.org, linux-hardening@...r.kernel.org Subject: [PATCH v3 0/3] kconfig: Add transitional symbol attribute for migration support Hi, Add the new "transitional" keyword to kconfig and use it to rename CONFIG_CFI_CLANG to CONFIG_CFI. v3: use Vegard's approach, add selftests v2: https://lore.kernel.org/lkml/20250830020109.it.598-kees@kernel.org/ v1: https://lore.kernel.org/all/20250830014438.work.682-kees@kernel.org/ -Kees Kees Cook (3): kconfig: Fix BrokenPipeError warnings in selftests kconfig: Add transitional symbol attribute for migration support kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI arch/Kconfig | 36 ++++--- arch/arm/Kconfig | 2 +- arch/arm64/Kconfig | 4 +- arch/riscv/Kconfig | 6 +- arch/x86/Kconfig | 12 +-- init/Kconfig | 4 +- kernel/module/Kconfig | 2 +- .../kconfig/tests/err_transitional/Kconfig | 52 +++++++++ scripts/kconfig/tests/transitional/Kconfig | 100 ++++++++++++++++++ lib/Kconfig.debug | 2 +- Makefile | 2 +- arch/arm/mm/Makefile | 2 +- arch/riscv/kernel/Makefile | 2 +- arch/riscv/purgatory/Makefile | 2 +- arch/x86/kernel/Makefile | 2 +- arch/x86/purgatory/Makefile | 2 +- kernel/Makefile | 2 +- scripts/kconfig/expr.h | 1 + scripts/kconfig/lexer.l | 1 + scripts/kconfig/parser.y | 47 ++++++++ scripts/kconfig/symbol.c | 7 +- scripts/kconfig/tests/conftest.py | 17 ++- .../tests/err_transitional/__init__.py | 14 +++ .../tests/err_transitional/expected_stderr | 7 ++ .../kconfig/tests/transitional/__init__.py | 18 ++++ .../tests/transitional/expected_config | 12 +++ .../kconfig/tests/transitional/initial_config | 16 +++ Documentation/kbuild/kconfig-language.rst | 32 ++++++ arch/riscv/include/asm/cfi.h | 4 +- arch/x86/include/asm/cfi.h | 4 +- include/asm-generic/vmlinux.lds.h | 2 +- include/linux/cfi.h | 6 +- include/linux/cfi_types.h | 8 +- include/linux/compiler.h | 2 +- include/linux/compiler_types.h | 2 +- tools/include/linux/cfi_types.h | 6 +- tools/perf/util/include/linux/linkage.h | 2 +- arch/arm/mm/cache-fa.S | 2 +- arch/arm/mm/cache-v4.S | 2 +- arch/arm/mm/cache-v4wb.S | 4 +- arch/arm/mm/cache-v4wt.S | 2 +- arch/arm/mm/cache-v6.S | 2 +- arch/arm/mm/cache-v7.S | 2 +- arch/arm/mm/cache-v7m.S | 2 +- arch/arm/mm/proc-arm1020.S | 2 +- arch/arm/mm/proc-arm1020e.S | 2 +- arch/arm/mm/proc-arm1022.S | 2 +- arch/arm/mm/proc-arm1026.S | 2 +- arch/arm/mm/proc-arm920.S | 2 +- arch/arm/mm/proc-arm922.S | 2 +- arch/arm/mm/proc-arm925.S | 2 +- arch/arm/mm/proc-arm926.S | 2 +- arch/arm/mm/proc-arm940.S | 2 +- arch/arm/mm/proc-arm946.S | 2 +- arch/arm/mm/proc-feroceon.S | 2 +- arch/arm/mm/proc-mohawk.S | 2 +- arch/arm/mm/proc-xsc3.S | 2 +- arch/arm/mm/tlb-v4.S | 2 +- arch/arm/kernel/hw_breakpoint.c | 2 +- arch/arm64/kernel/debug-monitors.c | 2 +- arch/arm64/kernel/traps.c | 4 +- arch/arm64/kvm/handle_exit.c | 2 +- arch/arm64/net/bpf_jit_comp.c | 2 +- arch/riscv/net/bpf_jit_comp64.c | 4 +- arch/x86/kernel/alternative.c | 4 +- arch/x86/kernel/kprobes/core.c | 2 +- drivers/misc/lkdtm/cfi.c | 2 +- kernel/module/tree_lookup.c | 2 +- kernel/configs/hardening.config | 2 +- 69 files changed, 422 insertions(+), 92 deletions(-) create mode 100644 scripts/kconfig/tests/err_transitional/Kconfig create mode 100644 scripts/kconfig/tests/transitional/Kconfig create mode 100644 scripts/kconfig/tests/err_transitional/__init__.py create mode 100644 scripts/kconfig/tests/err_transitional/expected_stderr create mode 100644 scripts/kconfig/tests/transitional/__init__.py create mode 100644 scripts/kconfig/tests/transitional/expected_config create mode 100644 scripts/kconfig/tests/transitional/initial_config -- 2.34.1
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