On Thu, 2 Dec 2021 at 11:45, Kefeng Wang [off-list ref] wrote:
[...]

quoted

quoted

for now and more explanation into changlog.

So what I gather arm64's final select line may look like:

      select HAVE_ARCH_KCSAN if EXPERT && (CC_IS_GCC || CLANG_VERSION >= 120000)

Yes,  that's what we want now.

I think we have all the pieces sorted out, so hopefully you have
everything you need to do v3.

[...]

quoted

I actually have a "fix" for the data race in rwsem_spin_on_owner, that
also shows where the other racing access comes from... which reminds me:
https://lkml.kernel.org/r/20211202101238.33546-1-elver@google.com

There's a owner_on_cpu(),  we could reuse it,

That looks like a reasonable thing to do, but can't say if it is
actually the right thing to do. You could suggest it in reply to the
patch I just sent and see what people say.

Thanks,
-- Marco

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