Re: [PATCH RFC memory-model 0/6] LKMM updates

Andrea Parri
2019-01-09T23:18:53Z

On Wed, Jan 09, 2019 at 01:07:06PM -0800, Paul E. McKenney wrote:
> Hello!
>
> This series contains updates for the Linux-kernel memory model:
>
> 1-3. Add SRCU support, courtesy of Alan Stern.
>
> 4. Update README for adding of SRCU support.
>
> 5. Update memory-barriers.txt on enforcing heavy ordering for
> port-I/O accesses, courtesy of Will Deacon. This one needs
> an ack, preferably by someone from Intel. Matthew Wilcox
> posted some feedback from an Intel manual here, which might
> be considered to be a close substitute, but... ;-)
>
> http://lkml.kernel.org/r/20181127192234.GF10377@bombadil.infradead.org
>
> 6. Update Documentation/explanation.txt to include SRCU support,
> courtesy of Alan Stern.
>
> 7. Dynamically check SRCU lock-to-unlock matching, courtesy of
> Luc Maranget. This needs an ack.

It seems that

1b52d0186177 ("tools/memory-model: Model smp_mb__after_unlock_lock()")

from linux-rcu/dev got lost; this also needs an ack (probably yours! ;D,
considered that, IIRC, you introduced the primitive and RCU is currently
its only user.)

Andrea

>
> Thanx, Paul
>
> ------------------------------------------------------------------------
>
> Documentation/memory-barriers.txt | 6
> tools/memory-model/Documentation/explanation.txt | 289 ++++++++++++-----------
> tools/memory-model/README | 25 +
> tools/memory-model/linux-kernel.bell | 37 ++
> tools/memory-model/linux-kernel.cat | 55 ++--
> tools/memory-model/linux-kernel.def | 7
> 6 files changed, 250 insertions(+), 169 deletions(-)
>