On Wed, 15 Dec 2021 at 14:33, Mark Rutland <mark.rutland@xxxxxxx> wrote: > > On Tue, Dec 14, 2021 at 05:20:19PM +0100, Alexander Potapenko wrote: > > kcov used to be broken prior to Clang 11, but right now that version is > > already the minimum required to build with KCSAN, that is why we don't > > need KCSAN_KCOV_BROKEN anymore. > > Just to check, how is that requirement enforced? HAVE_KCSAN_COMPILER will only be true with Clang 11 or later, due to no prior compiler having "-tsan-distinguish-volatile=1". > I see the core Makefiles enforce 10.0.1+, but I couldn't spot an explicit > version dependency in Kconfig.kcsan. > > Otherwise, this looks good to me! I think 5.17 will be Clang 11 only, so we could actually revert ea91a1d45d19469001a4955583187b0d75915759: https://lkml.kernel.org/r/Yao86FeC2ybOobLO@archlinux-ax161 I should resend that to be added to the -kbuild tree.
