netdev - Re: [PATCH rdma-next 00/10] Relaxed ordering memory regions

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Date:   Thu, 16 Jan 2020 11:20:08 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     Yishai Hadas <yishaih@...lanox.com>, linux-rdma@...r.kernel.org,
        dledford@...hat.com, saeedm@...lanox.com, maorg@...lanox.com,
        michaelgur@...lanox.com, netdev@...r.kernel.org
Subject: Re: [PATCH rdma-next 00/10] Relaxed ordering memory regions

On Wed, Jan 15, 2020 at 02:08:48PM -0400, Jason Gunthorpe wrote:
> On Wed, Jan 08, 2020 at 08:05:30PM +0200, Yishai Hadas wrote:
> > This series adds an ioctl command to allocate an async event file followed by a
> > new ioctl command to get a device context.
> >
> > The get device context command enables reading some core generic capabilities
> > such as supporting an optional MR access flags by IB core and its related
> > drivers.
> >
> > Once the above is enabled, a new optional MR access flag named
> > IB_UVERBS_ACCESS_RELAXED_ORDERING is added and is used by mlx5 driver.
> >
> > This optional flag allows creation of relaxed ordering memory regions.  Access
> > through such MRs can improve performance by allowing the system to reorder
> > certain accesses.
> >
> > As relaxed ordering is an optimization, drivers that do not support it can
> > simply ignore it.
> >
> > Note: This series relies on the 'Refactoring FD usage' series [1] that was sent
> > to rdma-next.
> > [1] https://patchwork.kernel.org/project/linux-rdma/list/?series=225541
> >
> > Yishai
> >
> > Jason Gunthorpe (3):
> >   RDMA/core: Add UVERBS_METHOD_ASYNC_EVENT_ALLOC
> >   RDMA/core: Remove ucontext_lock from the uverbs_destry_ufile_hw() path
> >   RDMA/uverbs: Add ioctl command to get a device context
> >
> > Michael Guralnik (7):
> >   net/mlx5: Expose relaxed ordering bits
> >   RDMA/uverbs: Verify MR access flags
> >   RDMA/core: Add optional access flags range
> >   RDMA/efa: Allow passing of optional access flags for MR registration
> >   RDMA/uverbs: Add new relaxed ordering memory region access flag
> >   RDMA/core: Add the core support field to METHOD_GET_CONTEXT
> >   RDMA/mlx5: Set relaxed ordering when requested
>
> This looks OK, can you update the shared branch please

Thanks, applied
f4db8e8b0dc3 net/mlx5: Expose relaxed ordering bits

>
> Thanks,
> Jason