[3/3] x86, kcsan: Add __no_kcsan to noinstr
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Message ID 20200602173348.458385730@infradead.org
State In Next
Commit 5ddbc4082e1072eeeae52ff561a88620a05be08f
Headers show
Series
  • KCSAN cleanups and noinstr
Related show

Commit Message

Peter Zijlstra June 2, 2020, 5:31 p.m. UTC
The 'noinstr' function attribute means no-instrumentation, this should
very much include *SAN. Because lots of that is broken at present,
only include KCSAN for now, as that is limited to clang11, which has
sane function attribute behaviour.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 include/linux/compiler_types.h |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Patch
diff mbox series

--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -118,10 +118,6 @@  struct ftrace_likely_data {
 #define notrace			__attribute__((__no_instrument_function__))
 #endif
 
-/* Section for code which can't be instrumented at all */
-#define noinstr								\
-	noinline notrace __attribute((__section__(".noinstr.text")))
-
 /*
  * it doesn't make sense on ARM (currently the only user of __naked)
  * to trace naked functions because then mcount is called without
@@ -200,6 +196,10 @@  struct ftrace_likely_data {
 #define __no_sanitize_or_inline __always_inline
 #endif
 
+/* Section for code which can't be instrumented at all */
+#define noinstr								\
+	noinline notrace __attribute((__section__(".noinstr.text"))) __no_kcsan
+
 #endif /* __KERNEL__ */
 
 #endif /* __ASSEMBLY__ */