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Message-ID: <20200623134309.GB9247@paulmck-ThinkPad-P72>
Date: Tue, 23 Jun 2020 06:43:09 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Marco Elver <elver@...gle.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
kasan-dev <kasan-dev@...glegroups.com>, kernel-team@...com,
Ingo Molnar <mingo@...nel.org>,
Andrey Konovalov <andreyknvl@...gle.com>,
Alexander Potapenko <glider@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>, Qian Cai <cai@....pw>,
Boqun Feng <boqun.feng@...il.com>
Subject: Re: [PATCH kcsan 0/10] KCSAN updates for v5.9
On Tue, Jun 23, 2020 at 08:31:15AM +0200, Marco Elver wrote:
> On Tue, 23 Jun 2020 at 02:43, Paul E. McKenney <paulmck@...nel.org> wrote:
> >
> > Hello!
> >
> > This series provides KCSAN updates:
> >
> > 1. Annotate a data race in vm_area_dup(), courtesy of Qian Cai.
> >
> > 2. x86/mm/pat: Mark an intentional data race, courtesy of Qian Cai.
> >
> > 3. Add ASSERT_EXCLUSIVE_ACCESS() to __list_splice_init_rcu().
> >
> > 4. Add test suite, courtesy of Marco Elver.
> >
> > 5. locking/osq_lock: Annotate a data race in osq_lock.
> >
> > 6. Prefer '__no_kcsan inline' in test, courtesy of Marco Elver.
> >
> > 7. Silence -Wmissing-prototypes warning with W=1, courtesy of Qian Cai.
> >
> > 8. Rename test.c to selftest.c, courtesy of Marco Elver.
> >
> > 9. Remove existing special atomic rules, courtesy of Marco Elver.
> >
> > 10. Add jiffies test to test suite, courtesy of Marco Elver.
>
> Do we want GCC support back for 5.9?
>
> https://lkml.kernel.org/r/20200618093118.247375-1-elver@google.com
>
> I was hoping it could go into 5.9, because it makes a big difference
> in terms of usability as it provides more compiler choice. The only
> significant change for GCC support is the addition of the checking of
> (CC_IS_GCC && (....)).
Very good, I will rebase the following into the KCSAN branch for v5.9:
3e490e3 kcsan: Re-add GCC as a supported compiler
03296de kcsan: Simplify compiler flags
d831090 kcsan: Disable branch tracing in core runtime
Please let me know if any other adjustments are needed.
Thanx, Paul
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