From: Eric Dumazet <eric.dumazet@gmail.com>
To: Tariq Toukan <tariqt@mellanox.com>,
"jianchao.wang" <jianchao.w.wang@oracle.com>,
Jason Gunthorpe <jgg@ziepe.ca>
Cc: junxiao.bi@oracle.com, netdev@vger.kernel.org,
linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
Saeed Mahameed <saeedm@mellanox.com>
Subject: Re: [PATCH] net/mlx4_en: ensure rx_desc updating reaches HW before prod db updating
Date: Sun, 21 Jan 2018 08:43:18 -0800 [thread overview]
Message-ID: <1516552998.3478.5.camel@gmail.com> (raw)
In-Reply-To: <339a7156-9ef1-1f3c-30b8-3cc3558d124e@mellanox.com>
On Sun, 2018-01-21 at 18:24 +0200, Tariq Toukan wrote:
>
> On 21/01/2018 11:31 AM, Tariq Toukan wrote:
> >
> >
> > On 19/01/2018 5:49 PM, Eric Dumazet wrote:
> > > On Fri, 2018-01-19 at 23:16 +0800, jianchao.wang wrote:
> > > > Hi Tariq
> > > >
> > > > Very sad that the crash was reproduced again after applied the patch.
>
> Memory barriers vary for different Archs, can you please share more
> details regarding arch and repro steps?
Yeah, mlx4 NICs in Google fleet receive trillions of packets per
second, and we never noticed an issue.
Although we are using a slightly different driver, using order-0 pages
and fast pages recycling.
next prev parent reply other threads:[~2018-01-21 16:43 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-12 3:42 [PATCH] net/mlx4_en: ensure rx_desc updating reaches HW before prod db updating Jianchao Wang
2018-01-12 16:32 ` Jason Gunthorpe
[not found] ` <20180112163247.GB15974-uk2M96/98Pc@public.gmane.org>
2018-01-12 16:46 ` Eric Dumazet
2018-01-12 19:53 ` Saeed Mahameed
[not found] ` <85116e56-52b1-944d-6ee2-916ccfc3a7a6-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-01-12 20:16 ` Eric Dumazet
2018-01-12 21:01 ` Saeed Mahameed
2018-01-12 21:21 ` Eric Dumazet
[not found] ` <e902138a-3508-3504-51e5-46152cc2fb31-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-01-13 19:15 ` Jason Gunthorpe
2018-01-14 2:40 ` jianchao.wang
[not found] ` <a40e44f4-106b-1075-8f92-f7741508372c-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2018-01-14 9:47 ` Tariq Toukan
2018-01-15 5:50 ` jianchao.wang
[not found] ` <fea0aa1c-b68e-9485-3826-2dfad7824911-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2018-01-19 15:16 ` jianchao.wang
[not found] ` <53b1ac4d-a294-eb98-149e-65d7954243da-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2018-01-19 15:49 ` Eric Dumazet
2018-01-21 9:31 ` Tariq Toukan
[not found] ` <dfc02a48-7d2a-56da-dc4e-d90a9fcc559c-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-01-21 16:24 ` Tariq Toukan
2018-01-21 16:43 ` Eric Dumazet [this message]
[not found] ` <1516552998.3478.5.camel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-22 2:40 ` jianchao.wang
2018-01-22 15:47 ` Jason Gunthorpe
2018-01-23 3:25 ` jianchao.wang
2018-01-22 2:12 ` jianchao.wang
[not found] ` <c8b0955b-a3fc-afe2-2c67-e655ca2ee6f6-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2018-01-25 3:27 ` jianchao.wang
[not found] ` <532b4d71-e2eb-35f3-894e-1c3288e7bc3f-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2018-01-25 3:55 ` Eric Dumazet
[not found] ` <1516852543.3715.43.camel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-25 6:25 ` jianchao.wang
[not found] ` <89066a75-43db-0f62-f171-70b0abaa8ea0-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2018-01-25 9:54 ` Tariq Toukan
[not found] ` <918db4ec-8c3c-aafa-4be6-0e00a99632e2-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-01-27 12:41 ` jianchao.wang
[not found] ` <d9883261-e93e-400a-757c-3a81d8b6aca1@mellanox.com>
2019-01-02 1:43 ` jianchao.wang
2018-01-21 20:40 ` Jason Gunthorpe
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