From e68dcd8eac63cf14745df0dc872ea479df8ed4b9 Mon Sep 17 00:00:00 2001 From: Marco Elver Date: Thu, 18 Jun 2020 11:31:16 +0200 Subject: kcsan: Re-add GCC as a supported compiler GCC version 11 recently implemented all requirements to correctly support KCSAN: 1. Correct no_sanitize-attribute inlining behaviour: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=4089df8ef4a63126b0774c39b6638845244c20d2 2. --param=tsan-distinguish-volatile https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=ab2789ec507a94f1a75a6534bca51c7b39037ce0 3. --param=tsan-instrument-func-entry-exit https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=06712fc68dc9843d9af7c7ac10047f49d305ad76 Therefore, we can re-enable GCC for KCSAN, and document the new compiler requirements. Signed-off-by: Marco Elver Cc: Martin Liska Signed-off-by: Paul E. McKenney --- Documentation/dev-tools/kcsan.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Documentation/dev-tools') diff --git a/Documentation/dev-tools/kcsan.rst b/Documentation/dev-tools/kcsan.rst index b38379f06194..be7a0b0e1f28 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 by both GCC and Clang. With GCC we require version 11 or +later, and with Clang also require version 11 or later. To enable KCSAN configure the kernel with:: -- cgit v1.2.3