From: David Miller <davem@davemloft.net>
To: brouer@redhat.com
Cc: ttoukan.linux@gmail.com, edumazet@google.com,
alexander.duyck@gmail.com, netdev@vger.kernel.org,
tariqt@mellanox.com, kafai@fb.com, saeedm@mellanox.com,
willemb@google.com, bblanco@plumgrid.com, ast@kernel.org,
eric.dumazet@gmail.com, linux-mm@kvack.org
Subject: Re: [PATCH v3 net-next 08/14] mlx4: use order-0 pages for RX
Date: Tue, 14 Feb 2017 14:59:19 -0500 (EST) [thread overview]
Message-ID: <20170214.145919.808498227095540599.davem@davemloft.net> (raw)
In-Reply-To: <20170214203822.72d41268@redhat.com>
From: Jesper Dangaard Brouer <brouer@redhat.com>
Date: Tue, 14 Feb 2017 20:38:22 +0100
> On Tue, 14 Feb 2017 12:04:26 -0500 (EST)
> David Miller <davem@davemloft.net> wrote:
>
>> One path I see around all of this is full integration. Meaning that
>> we can free pages into the page allocator which are still DMA mapped.
>> And future allocations from that device are prioritized to take still
>> DMA mapped objects.
>
> I like this idea. Are you saying that this should be done per DMA
> engine or per device?
>
> If this is per device, it is almost the page_pool idea.
Per-device is simplest, at least at first.
Maybe later down the road we can try to pool by "mapping entity" be
that a parent IOMMU or something else like a hypervisor managed
page table.
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next prev parent reply other threads:[~2017-02-14 19:59 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170213195858.5215-1-edumazet@google.com>
[not found] ` <20170213195858.5215-9-edumazet@google.com>
[not found] ` <CAKgT0Ufx0Y=9kjLax36Gx4e7Y-A7sKZDNYxgJ9wbCT4_vxHhGA@mail.gmail.com>
[not found] ` <CANn89iLkPB_Dx1L2dFfwOoeXOmPhu_C3OO2yqZi8+Rvjr=-EtA@mail.gmail.com>
[not found] ` <CAKgT0UeB_e_Z7LM1_r=en8JJdgLhoYFstWpCDQN6iawLYZJKDA@mail.gmail.com>
2017-02-14 12:12 ` Jesper Dangaard Brouer
2017-02-14 13:45 ` Eric Dumazet
2017-02-14 14:12 ` Eric Dumazet
2017-02-14 14:56 ` Tariq Toukan
2017-02-14 15:51 ` Eric Dumazet
2017-02-14 16:03 ` Eric Dumazet
2017-02-14 17:29 ` Tom Herbert
2017-02-15 16:42 ` Tariq Toukan
2017-02-15 16:57 ` Eric Dumazet
2017-02-16 13:08 ` Tariq Toukan
2017-02-16 15:47 ` Eric Dumazet
2017-02-16 17:05 ` Tom Herbert
2017-02-16 17:11 ` Eric Dumazet
2017-02-16 20:49 ` Saeed Mahameed
2017-02-16 19:03 ` David Miller
2017-02-16 21:06 ` Saeed Mahameed
2017-02-14 17:04 ` David Miller
2017-02-14 17:17 ` David Laight
2017-02-14 17:22 ` David Miller
2017-02-14 19:38 ` Jesper Dangaard Brouer
2017-02-14 19:59 ` David Miller [this message]
2017-02-14 17:29 ` Alexander Duyck
2017-02-14 18:46 ` Jesper Dangaard Brouer
2017-02-14 19:02 ` Eric Dumazet
2017-02-14 20:02 ` Jesper Dangaard Brouer
2017-02-14 21:56 ` Eric Dumazet
2017-02-14 19:06 ` Alexander Duyck
2017-02-14 19:50 ` Jesper Dangaard Brouer
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