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Subject[PATCH -tip v3 07/11] kcsan: Update Documentation to change supported compilers
Document change in required compiler version for KCSAN, and remove the
now redundant note about __no_kcsan and inlining problems with older

Acked-by: Will Deacon <>
Signed-off-by: Marco Elver <>
* Add missing commit message.
Documentation/dev-tools/kcsan.rst | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/Documentation/dev-tools/kcsan.rst b/Documentation/dev-tools/kcsan.rst
index f4b5766f12cc..ce4bbd918648 100644
--- a/Documentation/dev-tools/kcsan.rst
+++ b/Documentation/dev-tools/kcsan.rst
@@ -8,8 +8,7 @@ approach to detect races. KCSAN's primary purpose is to detect `data races`_.

-KCSAN is supported in both GCC and Clang. With GCC it requires version 7.3.0 or
-later. With Clang it requires version 7.0.0 or later.
+KCSAN requires Clang version 11 or later.

To enable KCSAN configure the kernel with::

@@ -121,12 +120,6 @@ the below options are available:
static __no_kcsan_or_inline void foo(void) {

- Note: Older compiler versions (GCC < 9) also do not always honor the
- ``__no_kcsan`` attribute on regular ``inline`` functions. If false positives
- with these compilers cannot be tolerated, for small functions where
- ``__always_inline`` would be appropriate, ``__no_kcsan_or_inline`` should be
- preferred instead.
* To disable data race detection for a particular compilation unit, add to the

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