netdev - Re: [PATCH mlx5-next 0/4] mlx5 next misc updates

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Message-ID: <20190127075109.GY3604@mtr-leonro.mtl.com>
Date:   Sun, 27 Jan 2019 07:51:11 +0000
From:   Leon Romanovsky <leonro@...lanox.com>
To:     Saeed Mahameed <saeedm@....mellanox.co.il>
CC:     Saeed Mahameed <saeedm@...lanox.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        Jason Gunthorpe <jgg@...lanox.com>
Subject: Re: [PATCH mlx5-next 0/4] mlx5 next misc updates

On Fri, Jan 25, 2019 at 10:08:00AM -0800, Saeed Mahameed wrote:
> On Thu, Jan 24, 2019 at 4:30 AM Leon Romanovsky <leonro@...lanox.com> wrote:
> >
> > On Fri, Jan 18, 2019 at 04:33:09PM -0800, Saeed Mahameed wrote:
> > > Hi all,
> > >
> > > This series includes updates to mlx5-next shared branch.
> > >
> > > 1) from Jason, improve mlx5_cmd_exec_cb async API to be safer
> > > 2) from Maxim Mikityanskiy, cleanups for mlx5_write64 doorbell API
> > > 3) from Michael Guralnik, Add pci AtomicOps request
> > >
> > > Thanks,
> > > Saeed.
> > >
> > > ---
> > >
> > > Jason Gunthorpe (1):
> > >   net/mlx5: Make mlx5_cmd_exec_cb() a safe API
> > >
> > > Michael Guralnik (1):
> > >   net/mlx5: Add pci AtomicOps request
> >
> > Those two were applied to mlx5-next branch.
> >
> > ce4eee5340a9 (mlx5-next) net/mlx5: Add pci AtomicOps request
> > e355477ed9e4 net/mlx5: Make mlx5_cmd_exec_cb() a safe API
> >
> > > Maxim Mikityanskiy (2):
> > >   net/mlx5: Remove unused MLX5_*_DOORBELL_LOCK macros
> > >   net/mlx5: Remove spinlock support from mlx5_write64
> >
> > Those two needs extra work,
>
> What extra work ?

You got two comments for area you are touching:
1. Replace _rww writes to something else.
2. Protect with spinlock 32-bits writes instead of ignoring it.

Both of those changes will touch the same 2-4 lines and there
is very little benefit in creating more than one-two patches
just for that.

Thanks

>
> >
> > Thanks
> >
> > >
> > > --
> > > 2.20.1
> > >

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