[PATCH] doc: kcsan: add support info of gcc for kcsan

[Wang Wenhu]

KCSAN is also supported in GCC version 7.3.0 or later.
For Clang, the supported versions are 7.0.0 and later.

Signed-off-by: Wang Wenhu <wenhu.wang@xxxxxxxx>
---
 Documentation/dev-tools/kcsan.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/dev-tools/kcsan.rst b/Documentation/dev-tools/kcsan.rst
index b38379f06194..05a4578839cf 100644
--- a/Documentation/dev-tools/kcsan.rst
+++ b/Documentation/dev-tools/kcsan.rst
@@ -8,7 +8,8 @@ approach to detect races. KCSAN's primary purpose is to detect `data races`_.
 Usage
 -----
 
-KCSAN requires Clang version 11 or later.
+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.
 
 To enable KCSAN configure the kernel with::
 
-- 
2.17.1