From: "Zhu, Lingshan" <lingshan.zhu@intel.com>
To: Parav Pandit <parav@nvidia.com>, Jason Wang <jasowang@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
"eperezma@redhat.com" <eperezma@redhat.com>,
"cohuck@redhat.com" <cohuck@redhat.com>,
"stefanha@redhat.com" <stefanha@redhat.com>,
"virtio-comment@lists.oasis-open.org"
<virtio-comment@lists.oasis-open.org>,
"virtio-dev@lists.oasis-open.org"
<virtio-dev@lists.oasis-open.org>
Subject: [virtio-dev] Re: [virtio-comment] [PATCH 5/5] virtio-pci: implement VIRTIO_F_QUEUE_STATE
Date: Tue, 12 Sep 2023 18:27:17 +0800 [thread overview]
Message-ID: <4c4c2478-c90b-fb5b-cc06-bc74293862b9@intel.com> (raw)
In-Reply-To: <PH0PR12MB5481CBCF7BEE5637D16BC179DCF1A@PH0PR12MB5481.namprd12.prod.outlook.com>
On 9/12/2023 3:43 PM, Parav Pandit wrote:
>> From: Zhu, Lingshan <lingshan.zhu@intel.com>
>> Sent: Tuesday, September 12, 2023 1:06 PM
>>
>> On 9/12/2023 2:52 PM, Parav Pandit wrote:
>>>> From: Zhu, Lingshan <lingshan.zhu@intel.com>
>>>> Sent: Tuesday, September 12, 2023 12:13 PM Why need P2P for Live
>>>> Migration?
>>> A peer device may be accessing the virtio device. Hence first all the devices to
>> be stopped like [1] allowing them to accept driver notifications from the peer
>> device.
>>> Once all the devices are stopped, than each device to be freeze to not do any
>> device context updates. At this point the final device context can be read by the
>> owner driver.
>> Is it beyond the spec? Nvidia specific use case and not related to virtio live
>> migration?
> Not at all Nvidia specific.
> And not all at all beyond the specification.
> PCI transport is probably by far most common transport of virtio.
> And hence, spec proposed in [1] covers it.
>
> It is the base line implementation of leading OS such as Linux kernel.
>
> Decade mature stack like vfio recommends support for p2p as base line without which multiple devices migration can fail as hypervisor has no knowledge if two devices are interacting or not.
>
> [1] https://lists.oasis-open.org/archives/virtio-comment/202309/msg00071.html
still, why do you think P2P is a concern of live migration? Or why do
you think Live Migration should implement special support for P2P?
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next prev parent reply other threads:[~2023-09-12 10:27 UTC|newest]
Thread overview: 269+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-06 8:16 [virtio-dev] [PATCH 0/5] virtio: introduce SUSPEND bit and vq state Zhu Lingshan
2023-09-06 8:16 ` [virtio-dev] [PATCH 1/5] virtio: introduce vq state as basic facility Zhu Lingshan
2023-09-06 8:28 ` [virtio-dev] Re: [virtio-comment] " Michael S. Tsirkin
2023-09-06 9:43 ` Zhu, Lingshan
2023-09-14 11:25 ` Michael S. Tsirkin
2023-09-15 2:46 ` Zhu, Lingshan
2023-09-06 8:16 ` [virtio-dev] [PATCH 2/5] virtio: introduce SUSPEND bit in device status Zhu Lingshan
2023-09-14 11:34 ` [virtio-dev] " Michael S. Tsirkin
2023-09-15 2:57 ` Zhu, Lingshan
2023-09-15 11:10 ` Michael S. Tsirkin
2023-09-18 2:56 ` Zhu, Lingshan
2023-09-18 4:42 ` [virtio-dev] RE: [virtio-comment] " Parav Pandit
2023-09-18 5:14 ` [virtio-dev] " Zhu, Lingshan
2023-09-18 6:17 ` [virtio-dev] " Parav Pandit
2023-09-18 6:38 ` [virtio-dev] " Zhu, Lingshan
2023-09-18 6:46 ` [virtio-dev] " Parav Pandit
2023-09-18 6:49 ` [virtio-dev] " Zhu, Lingshan
2023-09-18 6:50 ` [virtio-dev] " Zhu, Lingshan
2023-09-06 8:16 ` [virtio-dev] [PATCH 3/5] virtqueue: constraints for virtqueue state Zhu Lingshan
2023-09-14 11:30 ` [virtio-dev] " Michael S. Tsirkin
2023-09-15 2:59 ` Zhu, Lingshan
2023-09-15 11:16 ` Michael S. Tsirkin
2023-09-18 3:02 ` [virtio-dev] Re: [virtio-comment] " Zhu, Lingshan
2023-09-18 17:30 ` Michael S. Tsirkin
2023-09-19 7:56 ` Zhu, Lingshan
2023-09-06 8:16 ` [virtio-dev] [PATCH 4/5] virtqueue: ignore resetting vqs when SUSPEND Zhu Lingshan
2023-09-14 11:09 ` [virtio-dev] " Michael S. Tsirkin
2023-09-15 4:06 ` Zhu, Lingshan
2023-09-06 8:16 ` [virtio-dev] [PATCH 5/5] virtio-pci: implement VIRTIO_F_QUEUE_STATE Zhu Lingshan
2023-09-06 8:32 ` [virtio-dev] Re: [virtio-comment] " Michael S. Tsirkin
2023-09-06 8:37 ` [virtio-dev] " Parav Pandit
2023-09-06 9:37 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 3:01 ` Jason Wang
2023-09-11 4:11 ` [virtio-dev] " Parav Pandit
2023-09-11 6:30 ` [virtio-dev] " Jason Wang
2023-09-11 6:47 ` [virtio-dev] " Parav Pandit
2023-09-11 6:58 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 7:07 ` [virtio-dev] " Parav Pandit
2023-09-11 7:18 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 7:30 ` [virtio-dev] " Parav Pandit
2023-09-11 7:58 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 8:12 ` [virtio-dev] " Parav Pandit
2023-09-11 8:46 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 9:05 ` [virtio-dev] " Parav Pandit
2023-09-11 9:32 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 10:21 ` [virtio-dev] " Parav Pandit
2023-09-12 4:06 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 5:58 ` [virtio-dev] " Parav Pandit
2023-09-12 6:33 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 6:47 ` [virtio-dev] " Parav Pandit
2023-09-12 7:27 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 7:40 ` [virtio-dev] " Parav Pandit
2023-09-12 9:02 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 9:21 ` [virtio-dev] " Parav Pandit
2023-09-12 13:03 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 13:43 ` [virtio-dev] " Parav Pandit
2023-09-13 4:01 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:12 ` [virtio-dev] " Parav Pandit
2023-09-13 4:20 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:36 ` [virtio-dev] " Parav Pandit
2023-09-14 8:19 ` [virtio-dev] " Zhu, Lingshan
2023-09-11 11:50 ` [virtio-dev] " Parav Pandit
2023-09-12 3:43 ` [virtio-dev] " Jason Wang
2023-09-12 5:50 ` [virtio-dev] " Parav Pandit
2023-09-13 4:44 ` [virtio-dev] " Jason Wang
2023-09-13 6:05 ` [virtio-dev] " Parav Pandit
2023-09-14 3:11 ` [virtio-dev] " Jason Wang
2023-09-17 5:22 ` [virtio-dev] " Parav Pandit
2023-09-19 4:35 ` [virtio-dev] " Jason Wang
2023-09-19 7:33 ` [virtio-dev] " Parav Pandit
2023-09-12 3:48 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 5:51 ` [virtio-dev] " Parav Pandit
2023-09-12 6:37 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 6:49 ` [virtio-dev] " Parav Pandit
2023-09-12 7:29 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 7:53 ` [virtio-dev] " Parav Pandit
2023-09-12 9:06 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 9:08 ` Zhu, Lingshan
2023-09-12 9:35 ` [virtio-dev] " Parav Pandit
2023-09-12 10:14 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 10:16 ` [virtio-dev] " Parav Pandit
2023-09-12 10:28 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 2:23 ` [virtio-dev] " Parav Pandit
2023-09-13 4:03 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:15 ` [virtio-dev] " Parav Pandit
2023-09-13 4:21 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:37 ` [virtio-dev] " Parav Pandit
2023-09-14 3:11 ` [virtio-dev] " Jason Wang
2023-09-17 5:25 ` [virtio-dev] " Parav Pandit
2023-09-19 4:34 ` [virtio-dev] " Jason Wang
2023-09-19 7:32 ` [virtio-dev] " Parav Pandit
2023-09-14 8:22 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 9:28 ` [virtio-dev] " Parav Pandit
2023-09-12 10:17 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 10:25 ` [virtio-dev] " Parav Pandit
2023-09-12 10:32 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 10:40 ` [virtio-dev] " Parav Pandit
2023-09-12 13:04 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 13:36 ` [virtio-dev] " Parav Pandit
2023-09-12 4:10 ` [virtio-dev] " Jason Wang
2023-09-12 6:05 ` [virtio-dev] " Parav Pandit
2023-09-13 4:45 ` [virtio-dev] " Jason Wang
2023-09-13 6:39 ` [virtio-dev] " Parav Pandit
2023-09-14 3:08 ` [virtio-dev] " Jason Wang
2023-09-17 5:22 ` [virtio-dev] " Parav Pandit
2023-09-19 4:32 ` [virtio-dev] " Jason Wang
2023-09-19 7:32 ` [virtio-dev] " Parav Pandit
2023-09-13 8:27 ` [virtio-dev] " Michael S. Tsirkin
2023-09-14 3:11 ` Jason Wang
2023-09-12 4:18 ` Jason Wang
2023-09-12 6:11 ` [virtio-dev] " Parav Pandit
2023-09-12 6:43 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 6:52 ` [virtio-dev] " Parav Pandit
2023-09-12 7:36 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 7:43 ` [virtio-dev] " Parav Pandit
2023-09-12 10:27 ` Zhu, Lingshan [this message]
2023-09-12 10:33 ` Parav Pandit
2023-09-12 10:35 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 10:41 ` [virtio-dev] " Parav Pandit
2023-09-12 13:09 ` [virtio-dev] " Zhu, Lingshan
2023-09-12 13:35 ` [virtio-dev] " Parav Pandit
2023-09-13 4:13 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:19 ` [virtio-dev] " Parav Pandit
2023-09-13 4:22 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:39 ` [virtio-dev] " Parav Pandit
2023-09-14 8:24 ` [virtio-dev] " Zhu, Lingshan
2023-09-13 4:56 ` Jason Wang
2023-09-13 4:43 ` Jason Wang
2023-09-13 4:46 ` [virtio-dev] " Parav Pandit
2023-09-14 3:12 ` [virtio-dev] " Jason Wang
2023-09-17 5:29 ` [virtio-dev] " Parav Pandit
2023-09-19 4:25 ` [virtio-dev] " Jason Wang
2023-09-19 7:32 ` [virtio-dev] " Parav Pandit
2023-09-11 6:59 ` Parav Pandit
2023-09-11 10:15 ` [virtio-dev] " Michael S. Tsirkin
2023-09-12 3:35 ` Jason Wang
2023-09-12 3:43 ` Zhu, Lingshan
2023-09-14 11:27 ` Michael S. Tsirkin
2023-09-15 4:13 ` Zhu, Lingshan
2023-09-06 8:29 ` [virtio-dev] Re: [virtio-comment] [PATCH 0/5] virtio: introduce SUSPEND bit and vq state Michael S. Tsirkin
2023-09-06 8:38 ` Zhu, Lingshan
2023-09-06 13:49 ` Michael S. Tsirkin
2023-09-07 1:51 ` Zhu, Lingshan
2023-09-07 10:57 ` Eugenio Perez Martin
2023-09-07 19:55 ` Michael S. Tsirkin
2023-09-14 11:14 ` [virtio-dev] " Michael S. Tsirkin
2023-09-15 4:28 ` Zhu, Lingshan
2023-09-17 5:32 ` Parav Pandit
2023-09-18 3:10 ` Zhu, Lingshan
2023-09-18 4:32 ` Parav Pandit
2023-09-18 5:21 ` Zhu, Lingshan
2023-09-18 5:25 ` Zhu, Lingshan
2023-09-18 6:37 ` Parav Pandit
2023-09-18 6:49 ` Zhu, Lingshan
2023-09-18 6:54 ` Parav Pandit
2023-09-18 9:34 ` Zhu, Lingshan
2023-09-18 18:41 ` Parav Pandit
2023-09-18 18:49 ` Michael S. Tsirkin
2023-09-20 6:06 ` Zhu, Lingshan
2023-09-20 6:08 ` Parav Pandit
2023-09-20 6:31 ` Zhu, Lingshan
2023-09-20 8:34 ` Parav Pandit
2023-09-20 9:44 ` Zhu, Lingshan
2023-09-20 9:52 ` Parav Pandit
2023-09-20 11:11 ` Zhu, Lingshan
2023-09-20 11:15 ` Parav Pandit
2023-09-20 11:27 ` Zhu, Lingshan
2023-09-21 5:13 ` Michael S. Tsirkin
2023-09-20 10:36 ` Michael S. Tsirkin
2023-09-20 10:55 ` Parav Pandit
2023-09-20 11:28 ` Zhu, Lingshan
2023-09-20 11:52 ` Michael S. Tsirkin
2023-09-20 12:05 ` Zhu, Lingshan
2023-09-20 12:08 ` Zhu, Lingshan
2023-09-20 12:22 ` Michael S. Tsirkin
2023-09-20 11:22 ` Zhu, Lingshan
2023-09-20 12:05 ` Michael S. Tsirkin
2023-09-20 12:13 ` Parav Pandit
2023-09-20 12:16 ` Zhu, Lingshan
2023-09-20 12:40 ` Michael S. Tsirkin
2023-09-21 3:14 ` Jason Wang
2023-09-21 3:51 ` Parav Pandit
2023-09-21 4:02 ` Jason Wang
2023-09-21 4:11 ` Parav Pandit
2023-09-21 4:19 ` Jason Wang
2023-09-21 4:29 ` Parav Pandit
2023-09-22 3:13 ` Jason Wang
2023-09-20 12:41 ` Michael S. Tsirkin
2023-09-20 13:41 ` Parav Pandit
2023-09-20 14:13 ` Michael S. Tsirkin
2023-09-20 14:16 ` Michael S. Tsirkin
2023-09-20 17:21 ` Parav Pandit
2023-09-20 20:03 ` Michael S. Tsirkin
2023-09-21 3:43 ` Parav Pandit
2023-09-21 5:41 ` Michael S. Tsirkin
2023-09-21 5:54 ` Parav Pandit
2023-09-21 6:06 ` Michael S. Tsirkin
2023-09-21 6:31 ` Parav Pandit
2023-09-21 7:20 ` Michael S. Tsirkin
2023-09-21 7:53 ` Parav Pandit
2023-09-21 8:11 ` Michael S. Tsirkin
2023-09-21 9:17 ` Parav Pandit
2023-09-21 10:01 ` Michael S. Tsirkin
2023-09-21 11:13 ` Parav Pandit
2023-09-21 10:09 ` Michael S. Tsirkin
2023-09-21 10:39 ` Parav Pandit
2023-09-21 12:22 ` Michael S. Tsirkin
2023-09-21 12:39 ` Parav Pandit
2023-09-21 13:04 ` Michael S. Tsirkin
2023-09-22 3:31 ` Jason Wang
2023-09-21 9:06 ` Zhu, Lingshan
2023-09-21 9:18 ` Zhu, Lingshan
2023-09-21 9:26 ` Parav Pandit
2023-09-21 9:55 ` Zhu, Lingshan
2023-09-21 11:28 ` Parav Pandit
2023-09-22 2:40 ` Zhu, Lingshan
2023-09-21 3:26 ` Jason Wang
2023-09-21 4:21 ` Parav Pandit
2023-09-21 3:18 ` Jason Wang
2023-09-21 4:03 ` Parav Pandit
2023-09-21 3:17 ` Jason Wang
2023-09-21 4:01 ` Parav Pandit
2023-09-21 4:09 ` Jason Wang
2023-09-21 4:19 ` Parav Pandit
2023-09-22 3:08 ` Jason Wang
2023-09-22 3:39 ` Zhu, Lingshan
2023-09-25 10:41 ` Parav Pandit
2023-09-26 2:45 ` Jason Wang
2023-09-26 3:40 ` Parav Pandit
2023-09-26 4:37 ` Jason Wang
2023-09-26 5:21 ` Parav Pandit
2023-10-09 8:49 ` Jason Wang
2023-10-12 10:03 ` Michael S. Tsirkin
2023-09-27 15:31 ` Michael S. Tsirkin
2023-09-26 5:36 ` Zhu, Lingshan
2023-09-26 6:03 ` Parav Pandit
2023-09-26 9:25 ` Zhu, Lingshan
2023-09-26 10:48 ` Michael S. Tsirkin
2023-09-27 8:20 ` Zhu, Lingshan
2023-09-27 10:39 ` Parav Pandit
2023-10-09 10:05 ` Zhu, Lingshan
2023-10-09 10:07 ` Parav Pandit
2023-09-27 15:40 ` Michael S. Tsirkin
2023-10-09 10:01 ` Zhu, Lingshan
2023-10-11 10:20 ` [virtio-dev] Re: [virtio-comment] " Michael S. Tsirkin
2023-10-11 10:38 ` Zhu, Lingshan
2023-10-11 11:52 ` [virtio-dev] " Parav Pandit
2023-10-12 10:57 ` [virtio-dev] " Zhu, Lingshan
2023-10-12 11:13 ` Michael S. Tsirkin
2023-10-12 9:59 ` Michael S. Tsirkin
2023-10-12 10:49 ` Zhu, Lingshan
2023-10-12 11:12 ` Michael S. Tsirkin
2023-10-13 10:18 ` Zhu, Lingshan
2023-10-12 14:38 ` Michael S. Tsirkin
2023-10-13 10:23 ` Zhu, Lingshan
2023-09-27 21:43 ` Michael S. Tsirkin
2023-09-19 8:01 ` Zhu, Lingshan
2023-09-19 9:06 ` Parav Pandit
2023-09-19 10:03 ` Zhu, Lingshan
2023-09-19 4:27 ` Jason Wang
2023-09-19 7:32 ` Parav Pandit
2023-09-19 7:46 ` Zhu, Lingshan
2023-09-19 7:53 ` Parav Pandit
2023-09-19 8:03 ` Zhu, Lingshan
2023-09-19 8:31 ` Parav Pandit
2023-09-19 8:39 ` Zhu, Lingshan
2023-09-19 9:09 ` Parav Pandit
2023-09-14 11:37 ` Michael S. Tsirkin
2023-09-15 4:41 ` Zhu, Lingshan
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