From: "Chris Mason" <clm@fb.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Greg KH <gregkh@linuxfoundation.org>,
Jonathan Lemon <jonathan.lemon@gmail.com>,
<netdev@vger.kernel.org>, <kernel-team@fb.com>
Subject: Re: [RFC PATCH v2 21/21] netgpu/nvidia: add Nvidia plugin for netgpu
Date: Tue, 28 Jul 2020 14:47:38 -0400 [thread overview]
Message-ID: <6376CA34-BC6F-45DE-9FFD-7E32664C7569@fb.com> (raw)
In-Reply-To: <20200728172703.GA5667@infradead.org>
On 28 Jul 2020, at 13:27, Christoph Hellwig wrote:
> On Tue, Jul 28, 2020 at 01:18:48PM -0400, Chris Mason wrote:
>>> come after in the future.
>>
>> Jonathan, I think we need to do a better job talking about patches
>> that are
>> just meant to enable possible users vs patches that we actually hope
>> the
>> upstream kernel to take. Obviously code that only supports out of
>> tree
>> drivers isn???t a good fit for the upstream kernel. From the point
>> of view
>> of experimenting with these patches, GPUs benefit a lot from this
>> functionality so I think it does make sense to have the enabling
>> patches
>> somewhere, just not in this series.
>
> Sorry, but his crap is built only for this use case, and that is what
> really pissed people off as it very much looks intentional.
No, we’ve had workloads asking for better zero copy solutions for
ages. The goal is to address both this specialized workload and the
general case zero copy tx/rx.
-chris
next prev parent reply other threads:[~2020-07-28 18:47 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 22:44 [RFC PATCH v2 00/21] netgpu: networking between NIC and GPU/CPU Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 01/21] linux/log2.h: enclose macro arg in parens Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 02/21] mm/memory_hotplug: add {add|release}_memory_pages Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 03/21] mm: Allow DMA mapping of pages which are not online Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 04/21] kernel/user: export free_uid Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 05/21] uapi/misc: add shqueue.h for shared queues Jonathan Lemon
2020-07-28 19:53 ` kernel test robot
2020-07-27 22:44 ` [RFC PATCH v2 06/21] include: add netgpu UAPI and kernel definitions Jonathan Lemon
2020-07-29 1:25 ` kernel test robot
2020-07-27 22:44 ` [RFC PATCH v2 07/21] netdevice: add SETUP_NETGPU to the netdev_bpf structure Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 08/21] skbuff: add a zc_netgpu bitflag Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 09/21] core/skbuff: use skb_zdata for testing whether skb is zerocopy Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 10/21] netgpu: add network/gpu/host dma module Jonathan Lemon
2020-07-28 16:26 ` Greg KH
2020-07-28 17:41 ` Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 11/21] core/skbuff: add page recycling logic for netgpu pages Jonathan Lemon
2020-07-28 16:28 ` Greg KH
2020-07-28 18:00 ` Jonathan Lemon
2020-07-28 18:26 ` Greg KH
2020-07-27 22:44 ` [RFC PATCH v2 12/21] lib: have __zerocopy_sg_from_iter get netgpu pages for a sk Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 13/21] net/tcp: Pad TCP options out to a fixed size for netgpu Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 14/21] net/tcp: add netgpu ioctl setting up zero copy RX queues Jonathan Lemon
2020-07-28 2:16 ` Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 15/21] net/tcp: add MSG_NETDMA flag for sendmsg() Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 16/21] mlx5: remove the umem parameter from mlx5e_open_channel Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 17/21] mlx5e: add header split ability Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 18/21] mlx5e: add netgpu entries to mlx5 structures Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 19/21] mlx5e: add the netgpu driver functions Jonathan Lemon
2020-07-28 16:27 ` Greg KH
2020-07-27 22:44 ` [RFC PATCH v2 20/21] mlx5e: hook up the netgpu functions Jonathan Lemon
2020-07-27 22:44 ` [RFC PATCH v2 21/21] netgpu/nvidia: add Nvidia plugin for netgpu Jonathan Lemon
2020-07-28 16:31 ` Greg KH
2020-07-28 17:18 ` Chris Mason
2020-07-28 17:27 ` Christoph Hellwig
2020-07-28 18:47 ` Chris Mason [this message]
2020-07-28 19:55 ` [RFC PATCH v2 00/21] netgpu: networking between NIC and GPU/CPU Stephen Hemminger
2020-07-28 20:43 ` Jonathan Lemon
[not found] <20200727052846.4070247-1-jonathan.lemon@gmail.com>
[not found] ` <20200727052846.4070247-22-jonathan.lemon@gmail.com>
2020-07-27 7:35 ` [RFC PATCH v2 21/21] netgpu/nvidia: add Nvidia plugin for netgpu Christoph Hellwig
2020-07-27 17:00 ` Jonathan Lemon
2020-07-27 18:24 ` Christoph Hellwig
2020-07-28 1:48 ` Jonathan Lemon
2020-07-28 6:47 ` Christoph Hellwig
2020-07-28 16:05 ` Jonathan Lemon
2020-07-28 16:10 ` Christoph Hellwig
2020-07-28 18:19 ` Jason Gunthorpe
2020-07-28 21:01 ` Jonathan Lemon
2020-07-28 21:14 ` Christoph Hellwig
2020-07-28 23:38 ` Jason Gunthorpe
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