From: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
To: Pavel Fedin <p.fedin@samsung.com>
Cc: nakajima.yoshihiro@lab.ntt.co.jp,
"'Michael S. Tsirkin'" <mst@redhat.com>,
dev@dpdk.org, ann.zhuangyanying@huawei.com
Subject: Re: [PATCH 2/4] mem: add API to obstain memory-backed file info
Date: Tue, 12 Jan 2016 14:13:21 +0000 [thread overview]
Message-ID: <56950A01.1010508@intel.com> (raw)
In-Reply-To: <00ed01d14d41$278cd8d0$76a68a70$@samsung.com>
On 12/01/2016 13:57, Pavel Fedin wrote:
> Hello!
>
>> I might be missing something obvious here but, aside from having memory
>> SHARED which most DPDK apps using hugepages will have anyway, what is
>> the backward compatibility issues that you see here?
> Heh, sorry once again for confusing. Indeed, with hugepages we always get MAP_SHARED. I missed that. So, we indeed need
> --shared-mem only in addition to --no-huge.
>
> Backwards compatibility issue is stated in the description of PATCH 1/4:
> --- cut ---
> b. possible ABI break, originally, --no-huge uses anonymous memory
> instead of file-backed way to create memory.
> --- cut ---
> The patch unconditionally changes that to SHARED. That's all.
I should read more carefully!
Sorry about that, I thought you were the one with the ABI concerns.
Regarding ABI, I don't think there is any ABI issue with the change, we
just have our memory file-backed and SHARED but we do that when using
hugepages so I don't think it would be a huge issue.
But if folks have concerns about it, we could always keep old behavior
by default and, as you suggest, introduce another option for changing
the flag.
Sergio
> Kind regards,
> Pavel Fedin
> Senior Engineer
> Samsung Electronics Research center Russia
>
>
next prev parent reply other threads:[~2016-01-12 14:13 UTC|newest]
Thread overview: 196+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-05 18:31 [RFC 0/5] virtio support for container Jianfeng Tan
2015-11-05 18:31 ` [RFC 1/5] virtio/container: add handler for ioport rd/wr Jianfeng Tan
2015-11-05 18:31 ` [RFC 2/5] virtio/container: add a new virtual device named eth_cvio Jianfeng Tan
2015-11-05 18:31 ` [RFC 3/5] virtio/container: unify desc->addr assignment Jianfeng Tan
2015-11-05 18:31 ` [RFC 4/5] virtio/container: adjust memory initialization process Jianfeng Tan
2015-11-06 16:21 ` Ananyev, Konstantin
2015-11-08 11:18 ` Tan, Jianfeng
2015-11-09 13:32 ` Ananyev, Konstantin
2015-11-09 14:13 ` Tan, Jianfeng
2015-11-05 18:31 ` [RFC 5/5] vhost/container: change mode of vhost listening socket Jianfeng Tan
2015-11-09 3:54 ` Yuanhan Liu
2015-11-09 5:15 ` Tan, Jianfeng
2015-11-09 5:40 ` Yuanhan Liu
2015-11-09 5:46 ` Tan, Jianfeng
2015-11-24 3:53 ` [RFC 0/5] virtio support for container Zhuangyanying
2015-11-24 6:19 ` Tan, Jianfeng
2016-01-10 11:42 ` [PATCH 0/4] " Jianfeng Tan
2016-01-10 11:42 ` [PATCH 1/4] mem: add --single-file to create single mem-backed file Jianfeng Tan
2016-01-21 1:57 ` Xie, Huawei
2016-01-10 11:43 ` [PATCH 2/4] mem: add API to obstain memory-backed file info Jianfeng Tan
2016-01-11 11:43 ` Pavel Fedin
2016-01-11 20:26 ` Rich Lane
2016-01-12 9:12 ` Tan, Jianfeng
2016-01-12 10:04 ` Pavel Fedin
2016-01-12 10:48 ` Tan, Jianfeng
2016-01-12 11:00 ` Pavel Fedin
2016-01-12 11:07 ` Sergio Gonzalez Monroy
2016-01-12 11:37 ` Pavel Fedin
2016-01-12 12:12 ` Sergio Gonzalez Monroy
2016-01-12 13:57 ` Pavel Fedin
2016-01-12 14:13 ` Sergio Gonzalez Monroy [this message]
2016-01-12 11:44 ` Sergio Gonzalez Monroy
2016-01-12 11:22 ` Pavel Fedin
2016-01-12 11:33 ` Sergio Gonzalez Monroy
2016-01-12 12:01 ` Pavel Fedin
2016-01-12 13:39 ` Sergio Gonzalez Monroy
2016-01-10 11:43 ` [PATCH 3/4] virtio/vdev: add ways to interact with vhost Jianfeng Tan
2016-01-11 10:42 ` Pavel Fedin
2016-01-11 14:02 ` Pavel Fedin
2016-01-21 2:18 ` Xie, Huawei
2016-01-10 11:43 ` [PATCH 4/4] virtio/vdev: add a new vdev named eth_cvio Jianfeng Tan
2016-01-12 7:45 ` Pavel Fedin
2016-01-12 7:59 ` Yuanhan Liu
2016-01-12 8:39 ` Tan, Jianfeng
2016-01-12 9:15 ` Tan, Jianfeng
2016-01-27 3:10 ` Qiu, Michael
2016-01-11 14:21 ` [PATCH 0/4] virtio support for container Pavel Fedin
2016-01-11 15:53 ` Tan, Jianfeng
2016-01-12 7:38 ` Pavel Fedin
2016-01-12 8:14 ` Rich Lane
2016-01-12 8:39 ` Pavel Fedin
2016-01-12 8:51 ` Tan, Jianfeng
2016-01-12 10:48 ` Pavel Fedin
2016-01-12 14:45 ` Amit Tomer
2016-01-12 14:50 ` Pavel Fedin
2016-01-12 14:58 ` Amit Tomer
2016-01-12 14:53 ` Tan, Jianfeng
2016-01-12 15:11 ` Amit Tomer
2016-01-12 16:18 ` Tan, Jianfeng
2016-01-13 15:00 ` Amit Tomer
2016-01-13 18:41 ` Tan, Jianfeng
2016-01-14 9:34 ` Amit Tomer
2016-01-14 11:41 ` Tan, Jianfeng
2016-01-14 12:03 ` Amit Tomer
2016-01-15 6:39 ` Tan, Jianfeng
2016-01-20 15:19 ` Amit Tomer
2016-01-22 6:04 ` Tan, Jianfeng
2016-01-12 5:36 ` Tetsuya Mukawa
2016-01-12 5:46 ` Tan, Jianfeng
2016-01-12 6:01 ` Tetsuya Mukawa
2016-01-12 6:14 ` Yuanhan Liu
2016-01-12 6:26 ` Tetsuya Mukawa
2016-01-12 6:29 ` Yuanhan Liu
2016-01-20 3:48 ` Xie, Huawei
2016-01-26 6:02 ` Qiu, Michael
2016-01-26 6:09 ` Tan, Jianfeng
2016-02-05 11:20 ` [PATCH v2 0/5] " Jianfeng Tan
2016-02-05 11:20 ` [PATCH v2 1/5] mem: add --single-file to create single mem-backed file Jianfeng Tan
2016-03-07 13:13 ` Yuanhan Liu
2016-03-08 1:55 ` Tan, Jianfeng
2016-03-08 2:44 ` Yuanhan Liu
2016-03-09 14:44 ` Tan, Jianfeng
2016-03-08 8:49 ` Panu Matilainen
2016-03-08 9:04 ` Yuanhan Liu
2016-03-08 10:30 ` Thomas Monjalon
2016-03-08 10:57 ` Burakov, Anatoly
2016-03-14 13:53 ` Traynor, Kevin
2016-03-14 14:45 ` Thomas Monjalon
2016-03-14 18:21 ` Traynor, Kevin
2016-02-05 11:20 ` [PATCH v2 2/5] mem: add API to obtain memory-backed file info Jianfeng Tan
2016-03-07 13:22 ` Yuanhan Liu
2016-03-08 2:31 ` Tan, Jianfeng
2016-03-08 2:53 ` Yuanhan Liu
2016-02-05 11:20 ` [PATCH v2 3/5] virtio/vdev: add embeded device emulation Jianfeng Tan
2016-02-07 10:47 ` Michael S. Tsirkin
2016-02-08 6:59 ` Tetsuya Mukawa
2016-02-16 2:47 ` Tan, Jianfeng
2016-02-16 2:40 ` Tan, Jianfeng
2016-02-05 11:20 ` [PATCH v2 4/5] virtio/vdev: add a new vdev named eth_cvio Jianfeng Tan
2016-02-05 11:20 ` [PATCH v2 5/5] docs: add release note for virtio for container Jianfeng Tan
2016-03-23 19:17 ` [PATCH v2 0/5] virtio support " Neil Horman
2016-03-24 3:10 ` Tan, Jianfeng
2016-03-24 13:45 ` Neil Horman
2016-03-25 1:25 ` Tan, Jianfeng
2016-03-25 11:06 ` Neil Horman
2016-04-13 16:14 ` Thomas Monjalon
2016-04-14 6:08 ` Tan, Jianfeng
2016-04-21 2:56 ` [PATCH v3 0/2] " Jianfeng Tan
2016-04-21 2:56 ` [PATCH v3 1/2] virtio/vdev: add embeded device emulation Jianfeng Tan
2016-04-21 22:01 ` Yuanhan Liu
2016-04-22 10:12 ` Tan, Jianfeng
2016-04-22 10:17 ` Thomas Monjalon
2016-04-22 17:27 ` Yuanhan Liu
2016-04-21 2:56 ` [PATCH v3 2/2] virtio/vdev: add a new vdev named eth_cvio Jianfeng Tan
2016-04-21 8:51 ` David Marchand
2016-04-22 5:15 ` Tan, Jianfeng
2016-04-22 7:36 ` David Marchand
2016-04-22 10:25 ` Tan, Jianfeng
2016-04-21 10:05 ` Thomas Monjalon
2016-04-22 7:26 ` Tan, Jianfeng
2016-04-22 8:30 ` Thomas Monjalon
2016-04-21 22:14 ` Yuanhan Liu
2016-04-22 10:12 ` Tan, Jianfeng
2016-04-29 1:18 ` [PATCH v4 0/8] virtio support for container Jianfeng Tan
2016-04-29 1:18 ` [PATCH v4 1/8] virtio: hide phys addr check inside pci ops Jianfeng Tan
2016-05-11 23:05 ` Yuanhan Liu
2016-04-29 1:18 ` [PATCH v4 2/8] virtio: abstract vring hdr desc init as a method Jianfeng Tan
2016-04-29 1:18 ` [PATCH v4 3/8] virtio: enable use virtual address to fill desc Jianfeng Tan
2016-04-29 1:18 ` [PATCH v4 4/8] virtio-user: add vhost adapter layer Jianfeng Tan
2016-04-29 1:18 ` [PATCH v4 5/8] virtio-user: add device emulation layer APIs Jianfeng Tan
2016-05-12 1:05 ` Yuanhan Liu
2016-04-29 1:18 ` [PATCH v4 6/8] virtio-user: add new virtual pci driver for virtio Jianfeng Tan
2016-05-12 2:12 ` Yuanhan Liu
2016-05-12 7:08 ` Tan, Jianfeng
2016-05-12 16:40 ` Yuanhan Liu
2016-05-13 1:54 ` Tan, Jianfeng
2016-05-13 4:45 ` Yuanhan Liu
2016-05-16 1:48 ` Tan, Jianfeng
2016-05-16 2:51 ` Yuanhan Liu
2016-05-12 17:02 ` Michael S. Tsirkin
2016-05-13 2:00 ` Tan, Jianfeng
2016-04-29 1:18 ` [PATCH v4 7/8] virtio-user: add a new virtual device named virtio-user Jianfeng Tan
2016-04-29 1:18 ` [PATCH v4 8/8] doc: update doc for virtio-user Jianfeng Tan
2016-04-29 1:35 ` [PATCH v4 0/8] virtio support for container Tan, Jianfeng
2016-05-30 10:55 ` [PATCH v5 " Jianfeng Tan
2016-05-30 10:55 ` [PATCH v5 1/8] virtio: hide phys addr check inside pci ops Jianfeng Tan
2016-05-30 10:55 ` [PATCH v5 2/8] virtio: clean up virtio_dev_queue_setup Jianfeng Tan
2016-06-01 7:38 ` Yuanhan Liu
2016-06-01 7:44 ` Tan, Jianfeng
2016-06-01 7:58 ` Yuanhan Liu
2016-05-30 10:55 ` [PATCH v5 3/8] virtio: enable use virtual address to fill desc Jianfeng Tan
2016-06-01 8:03 ` Yuanhan Liu
2016-05-30 10:55 ` [PATCH v5 4/8] virtio-user: add vhost adapter layer Jianfeng Tan
2016-05-30 10:55 ` [PATCH v5 5/8] virtio-user: add device emulation layer APIs Jianfeng Tan
2016-05-30 10:55 ` [PATCH v5 6/8] virtio-user: add new virtual pci driver for virtio Jianfeng Tan
2016-06-01 8:21 ` Yuanhan Liu
2016-05-30 10:55 ` [PATCH v5 7/8] virtio-user: add a new vdev named virtio-user Jianfeng Tan
2016-06-01 8:26 ` Yuanhan Liu
2016-06-02 1:27 ` Tan, Jianfeng
2016-05-30 10:55 ` [PATCH v5 8/8] doc: update doc for virtio-user Jianfeng Tan
2016-06-01 8:30 ` Yuanhan Liu
2016-06-02 9:54 ` [PATCH v6 0/7] virtio support for container Jianfeng Tan
2016-06-02 9:54 ` [PATCH v6 1/7] virtio: hide phys addr check inside pci ops Jianfeng Tan
2016-06-02 9:54 ` [PATCH v6 2/7] virtio: clean up virtio_dev_queue_setup Jianfeng Tan
2016-06-02 9:54 ` [PATCH v6 3/7] virtio: enable use virtual address to fill desc Jianfeng Tan
2016-06-02 9:54 ` [PATCH v6 4/7] virtio-user: add vhost adapter layer Jianfeng Tan
2016-06-02 9:54 ` [PATCH v6 5/7] virtio-user: add device emulation layer APIs Jianfeng Tan
2016-06-02 9:54 ` [PATCH v6 6/7] virtio-user: add new virtual pci driver for virtio Jianfeng Tan
2016-06-06 8:01 ` Yuanhan Liu
2016-06-06 8:31 ` Tan, Jianfeng
2016-06-02 9:54 ` [PATCH v6 7/7] virtio-user: add a new vdev named virtio-user Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 0/6] virtio support for container Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 1/6] virtio: hide phys addr check inside pci ops Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 2/6] virtio: enable use virtual address to fill desc Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 3/6] virtio-user: add vhost adapter layer Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 4/6] virtio-user: add device emulation layer APIs Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 5/6] virtio-user: add new virtual pci driver for virtio Jianfeng Tan
2016-06-12 0:35 ` [PATCH v7 6/6] virtio-user: add a new vdev named virtio-user Jianfeng Tan
2016-06-13 6:38 ` [PATCH v8 0/6] virtio support for container Jianfeng Tan
2016-06-13 6:38 ` [PATCH v8 1/6] virtio: hide phys addr check inside pci ops Jianfeng Tan
2016-06-13 6:38 ` [PATCH v8 2/6] virtio: enable use virtual address to fill desc Jianfeng Tan
2016-06-13 6:39 ` [PATCH v8 3/6] virtio-user: add vhost user adapter layer Jianfeng Tan
2016-06-13 6:39 ` [PATCH v8 4/6] virtio-user: add device emulation layer APIs Jianfeng Tan
2016-06-13 6:39 ` [PATCH v8 5/6] virtio-user: add new virtual pci driver for virtio Jianfeng Tan
2016-06-13 6:39 ` [PATCH v8 6/6] virtio-user: add a new vdev named virtio-user Jianfeng Tan
2016-06-14 8:34 ` [PATCH v8 0/6] virtio support for container Yuanhan Liu
2016-06-15 9:03 ` [PATCH v9 " Jianfeng Tan
2016-06-15 9:03 ` [PATCH v9 1/6] virtio: hide phys addr check inside PCI ops Jianfeng Tan
2016-06-15 9:03 ` [PATCH v9 2/6] virtio: enable use virtual address to fill desc Jianfeng Tan
2016-06-15 9:03 ` [PATCH v9 3/6] virtio-user: add vhost user adapter layer Jianfeng Tan
2016-06-23 9:01 ` Ferruh Yigit
2016-06-24 1:18 ` Tan, Jianfeng
2016-06-15 9:03 ` [PATCH v9 4/6] virtio-user: add device emulation layer APIs Jianfeng Tan
2016-06-15 9:03 ` [PATCH v9 5/6] virtio-user: add new virtual PCI driver for virtio Jianfeng Tan
2016-06-15 9:03 ` [PATCH v9 6/6] virtio-user: add a new vdev named virtio-user Jianfeng Tan
2016-06-15 9:54 ` [PATCH v9 0/6] virtio support for container Yuanhan Liu
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