The following commit has been merged into the x86/core branch of tip:
Commit-ID: 038c7dc66e2744e5df57163b8f957745ae10d23e
Gitweb: https://git.kernel.org/tip/038c7dc66e2744e5df57163b8f957745ae10d23e
Author: Kees Cook <kees@kernel.org>
AuthorDate: Wed, 03 Sep 2025 20:46:40 -07:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Thu, 04 Sep 2025 21:59:07 +02:00
compiler_types.h: Move __nocfi out of compiler-specific header
Prepare for GCC KCFI support and move the __nocfi attribute from
compiler-clang.h to compiler_types.h. This was already gated by
CONFIG_CFI_CLANG, so this remains safe for non-KCFI GCC builds.
Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20250904034656.3670313-1-kees@kernel.org
---
include/linux/compiler-clang.h | 5 -----
include/linux/compiler_types.h | 4 +++-
2 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index fa4ffe0..7a4568e 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -96,11 +96,6 @@
# define __noscs __attribute__((__no_sanitize__("shadow-call-stack")))
#endif
-#if __has_feature(kcfi)
-/* Disable CFI checking inside a function. */
-#define __nocfi __attribute__((__no_sanitize__("kcfi")))
-#endif
-
/*
* Turn individual warnings and errors on and off locally, depending
* on version.
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 1675543..a910f9f 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -432,7 +432,9 @@ struct ftrace_likely_data {
# define __noscs
#endif
-#ifndef __nocfi
+#if defined(CONFIG_CFI_CLANG)
+# define __nocfi __attribute__((__no_sanitize__("kcfi")))
+#else
# define __nocfi
#endif