From: Parav Pandit <parav@nvidia.com>
To: <virtio-comment@lists.oasis-open.org>, <mst@redhat.com>,
<cohuck@redhat.com>
Cc: <sburla@marvell.com>, <shahafs@nvidia.com>, <maorg@nvidia.com>,
<yishaih@nvidia.com>, Parav Pandit <parav@nvidia.com>
Subject: [virtio-comment] [PATCH v1 0/8] Introduce device migration support commands
Date: Sun, 8 Oct 2023 14:25:47 +0300 [thread overview]
Message-ID: <20231008112555.473895-1-parav@nvidia.com> (raw)
This series introduces administration commands for member device migration
for PCI transport; when needed it can be extended for other transports
too.
Use case requirements:
======================
1. A hypervisor system needs to provide a PCI VF as passthrough
device to the guest virtual machine and also support live
migration of this virtual machine.
2. A virtual machine may have one or more such passthrough
virtio devices.
3. A virtual machine may have other PCI passthrough device
which may also interact with virtio device.
4. A hypervisor runs a vendor agnostic driver with extension
to support device migration.
5. A PCI VF passthrough device needs to support transparent
device reset and PCI FLR must while the device migration is
ongoing.
6. A owner driver do not involve in device operations mediation
for the passthrough device at virtio interface level.
7. Mechanism is generic enough that applies to large family of
virtio devices and it does not involve trapping any virtio
device interfaces for the passthrough devices.
Overview:
=========
Above usecase requirements is solved by PCI PF group owner driver
facilitating the member device migration functionality using
administration commands.
There are three major functionalities.
1. Suspend and resume the device operation
2. Read and Write the device context containing all the information
that can be transferred from source to destination to migrate to
a member device
3. Track pages written by the device during device migration is
ongoing
This comprehensive series introduces 4 infrastructure pieces
covering PCI transport, peer to peer PCI devices, page tracking (aka dirty page
tracking) and generic device context.
1. Device mode get,set (active, stop, freeze)
2. Device context read and write
3. Defines device context
4. Write reporting to track page addresses
This series enables virtio PCI SR-IOV member device to member device
migration. It can also be used to/from migrate from PCI SR-IOV member
device to software composed PCI device if/when needed which can
parse and compose software based PCI virtio device.
Example flow:
=============
Source hypervisor:
1. Instructs device to start tracking pages it is writing
2. Periodically query the addresses of the written pages
3. Suspend the device operation
4. Read the device context and transfer to destination hypervisor
Destination hypervisor:
5. Write the device context received from source
6. Resume the device that has newly written device context
Patch summary:
==============
patch-1: Adds theory of operation for device migration commands
patch-2: Redefine reserved2 to command output field
patch-3: Defines short device context for split virtqueues
patch-4: Adds device migration commands
patch-5: Adds requirements for device migration commands
patch-6: Adds theory of operation for write reporting commands
patch-7: Adds write reporting commands
patch-8: Adds requirements for write reporting commands
It also takes inspiration from the similar idea presented at KVM Forum
at [1].
Changelog:
==========
1. Enrich device context to cover device configuration layout, feature bits
2. Fixed alignment of device context fields
3. Added missing Sign-off for the joint work done with Satananda
4. Added link to the github issue
Please review.
[1] https://static.sched.com/hosted_files/kvmforum2022/3a/KVM22-Migratable-Vhost-vDPA.pdf
Parav Pandit (8):
admin: Add theory of operation for device migration
admin: Redefine reserved2 as command specific output
device-context: Define the device context fields for device migration
admin: Add device migration admin commands
admin: Add requirements of device migration commands
admin: Add theory of operation for write recording commands
admin: Add write recording commands
admin: Add requirements of write reporting commands
admin-cmds-device-migration.tex | 574 ++++++++++++++++++++++++++++++++
admin.tex | 38 ++-
content.tex | 1 +
device-context.tex | 142 ++++++++
4 files changed, 748 insertions(+), 7 deletions(-)
create mode 100644 admin-cmds-device-migration.tex
create mode 100644 device-context.tex
--
2.34.1
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next reply other threads:[~2023-10-08 11:26 UTC|newest]
Thread overview: 341+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-08 11:25 Parav Pandit [this message]
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 1/8] admin: Add theory of operation for device migration Parav Pandit
2023-10-09 8:49 ` Jason Wang
2023-10-09 10:06 ` Parav Pandit
2023-10-10 5:51 ` Jason Wang
2023-10-10 7:19 ` Parav Pandit
2023-10-10 12:41 ` Michael S. Tsirkin
2023-10-10 13:08 ` Parav Pandit
2023-10-10 14:00 ` Michael S. Tsirkin
2023-10-10 14:09 ` Parav Pandit
2023-10-10 14:55 ` Michael S. Tsirkin
2023-10-11 3:14 ` Jason Wang
2023-10-11 6:02 ` Michael S. Tsirkin
2023-10-11 10:47 ` Parav Pandit
2023-10-11 20:14 ` Michael S. Tsirkin
2023-10-12 10:21 ` Parav Pandit
2023-10-13 1:15 ` Jason Wang
2023-10-13 6:36 ` Parav Pandit
2023-10-17 1:41 ` Jason Wang
2023-10-18 8:16 ` Parav Pandit
2023-10-18 10:19 ` Michael S. Tsirkin
2023-10-18 10:33 ` Parav Pandit
2023-10-19 2:41 ` Jason Wang
2023-10-13 11:41 ` Michael S. Tsirkin
2023-10-09 12:02 ` Parav Pandit
2023-10-09 16:19 ` Michael S. Tsirkin
2023-10-09 17:21 ` Parav Pandit
2023-10-10 8:57 ` Zhu, Lingshan
2023-10-10 9:40 ` Parav Pandit
2023-10-11 10:25 ` Zhu, Lingshan
2023-10-11 11:43 ` Parav Pandit
2023-10-12 10:21 ` Zhu, Lingshan
2023-10-12 10:58 ` Parav Pandit
2023-10-12 11:17 ` Michael S. Tsirkin
2023-10-12 11:47 ` Parav Pandit
2023-10-12 13:05 ` Michael S. Tsirkin
2023-10-13 1:16 ` Jason Wang
2023-10-13 6:36 ` Parav Pandit
2023-10-17 1:53 ` Jason Wang
2023-10-17 2:02 ` Jason Wang
2023-10-17 3:19 ` Parav Pandit
2023-10-17 3:26 ` Parav Pandit
2023-10-18 0:52 ` Jason Wang
2023-10-18 4:30 ` Parav Pandit
2023-10-18 6:14 ` Michael S. Tsirkin
2023-10-18 6:26 ` Parav Pandit
2023-10-19 2:41 ` Jason Wang
2023-10-19 4:29 ` Parav Pandit
2023-10-19 4:44 ` Jason Wang
2023-10-19 5:31 ` Parav Pandit
2023-10-19 6:35 ` Michael S. Tsirkin
2023-10-19 7:30 ` Parav Pandit
2023-10-19 8:31 ` Michael S. Tsirkin
2023-10-19 8:58 ` Parav Pandit
2023-10-19 9:11 ` Michael S. Tsirkin
2023-10-19 9:20 ` Parav Pandit
2023-10-19 9:26 ` Michael S. Tsirkin
2023-10-19 9:33 ` Michael S. Tsirkin
2023-10-19 9:41 ` Parav Pandit
2023-10-19 9:53 ` Michael S. Tsirkin
2023-10-19 9:54 ` Michael S. Tsirkin
2023-10-19 10:00 ` Parav Pandit
2023-10-19 10:01 ` Parav Pandit
2023-10-19 9:39 ` Parav Pandit
2023-10-19 9:49 ` Michael S. Tsirkin
2023-10-19 9:57 ` Parav Pandit
2023-10-23 3:45 ` Jason Wang
2023-10-23 4:42 ` Parav Pandit
2023-10-24 4:46 ` Jason Wang
2023-10-24 4:49 ` Parav Pandit
2023-10-25 1:28 ` Jason Wang
2023-10-25 7:02 ` Parav Pandit
2023-10-26 0:46 ` Jason Wang
2023-10-26 3:45 ` Parav Pandit
2023-10-30 4:06 ` Jason Wang
2023-10-30 4:46 ` Parav Pandit
2023-10-31 1:34 ` Jason Wang
2023-10-31 5:30 ` Parav Pandit
2023-11-01 0:33 ` Jason Wang
2023-11-01 3:31 ` Parav Pandit
2023-11-02 4:25 ` Jason Wang
2023-11-02 6:10 ` Parav Pandit
2023-11-06 6:34 ` Jason Wang
2023-11-06 7:05 ` Parav Pandit
2023-11-07 4:05 ` Jason Wang
2023-11-07 7:22 ` Michael S. Tsirkin
2023-11-07 7:57 ` Zhu, Lingshan
2023-11-07 8:05 ` Michael S. Tsirkin
2023-11-08 4:28 ` Jason Wang
2023-11-09 6:25 ` Parav Pandit
2023-11-13 3:32 ` Jason Wang
2023-11-15 17:39 ` Parav Pandit
2023-11-16 4:20 ` Jason Wang
2023-11-16 5:28 ` Parav Pandit
2023-11-16 6:23 ` Michael S. Tsirkin
2023-11-16 6:34 ` Parav Pandit
2023-11-16 6:38 ` Michael S. Tsirkin
2023-11-16 6:43 ` Parav Pandit
2023-11-16 6:56 ` Michael S. Tsirkin
2023-11-16 7:02 ` Parav Pandit
2023-11-16 7:14 ` Michael S. Tsirkin
2023-11-16 9:45 ` Parav Pandit
2023-11-21 4:22 ` Jason Wang
2023-11-21 16:25 ` Parav Pandit
2023-11-22 4:13 ` Jason Wang
2023-11-22 7:48 ` Michael S. Tsirkin
2023-11-24 3:56 ` Jason Wang
2023-11-24 5:40 ` Michael S. Tsirkin
2023-11-21 7:24 ` Jason Wang
2023-11-21 16:32 ` Parav Pandit
2023-11-22 5:27 ` Jason Wang
2023-11-22 6:05 ` Parav Pandit
2023-11-24 3:40 ` Jason Wang
2023-11-17 10:08 ` Michael S. Tsirkin
2023-11-17 10:20 ` Parav Pandit
2023-11-17 11:11 ` Michael S. Tsirkin
2023-11-17 11:20 ` Parav Pandit
2023-11-17 11:43 ` Michael S. Tsirkin
2023-11-17 12:02 ` Parav Pandit
2023-11-17 12:30 ` Michael S. Tsirkin
2023-11-17 12:46 ` Parav Pandit
2023-11-17 13:54 ` Michael S. Tsirkin
2023-11-17 14:51 ` Parav Pandit
2023-11-17 15:09 ` Michael S. Tsirkin
2023-11-21 4:44 ` Jason Wang
2023-11-21 16:27 ` Parav Pandit
2023-11-22 4:16 ` Jason Wang
2023-11-22 4:39 ` Parav Pandit
2023-11-24 3:08 ` Jason Wang
2023-11-21 5:25 ` Jason Wang
2023-11-21 16:30 ` Parav Pandit
2023-11-22 4:18 ` Jason Wang
2023-11-22 4:26 ` Parav Pandit
2023-11-24 3:07 ` Jason Wang
2023-11-24 11:38 ` Michael S. Tsirkin
2023-11-24 11:51 ` Jason Wang
2023-11-24 12:10 ` Michael S. Tsirkin
2023-11-24 12:13 ` Parav Pandit
2023-11-24 12:19 ` Michael S. Tsirkin
2023-10-13 11:26 ` Michael S. Tsirkin
2023-10-13 11:41 ` Parav Pandit
2023-10-13 11:52 ` Michael S. Tsirkin
2023-10-13 11:57 ` Parav Pandit
2023-10-17 1:42 ` Jason Wang
2023-10-13 9:06 ` Zhu, Lingshan
2023-10-13 11:28 ` Michael S. Tsirkin
2023-10-13 11:42 ` Parav Pandit
2023-10-16 8:41 ` Zhu, Lingshan
2023-10-16 9:00 ` Michael S. Tsirkin
2023-10-16 9:44 ` Zhu, Lingshan
2023-10-13 11:28 ` Parav Pandit
2023-10-13 11:49 ` Michael S. Tsirkin
2023-10-13 12:00 ` Parav Pandit
2023-10-16 8:46 ` Zhu, Lingshan
2023-10-16 9:44 ` Zhu, Lingshan
2023-10-18 5:00 ` Parav Pandit
2023-10-18 6:32 ` Zhu, Lingshan
2023-10-18 6:34 ` Parav Pandit
2023-10-18 6:39 ` Zhu, Lingshan
2023-10-18 6:42 ` Parav Pandit
2023-10-11 19:51 ` Michael S. Tsirkin
2023-10-12 10:23 ` Zhu, Lingshan
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 2/8] admin: Redefine reserved2 as command specific output Parav Pandit
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 3/8] device-context: Define the device context fields for device migration Parav Pandit
2023-10-08 11:41 ` [virtio-comment] " Michael S. Tsirkin
2023-10-09 4:15 ` Parav Pandit
2023-10-09 15:54 ` Michael S. Tsirkin
2023-10-09 17:22 ` Parav Pandit
2023-10-09 10:34 ` Zhu, Lingshan
2023-10-09 14:30 ` Parav Pandit
2023-10-10 8:52 ` Zhu, Lingshan
2023-10-10 9:58 ` Parav Pandit
2023-10-11 10:07 ` Zhu, Lingshan
2023-10-11 10:54 ` Parav Pandit
2023-10-11 19:54 ` Michael S. Tsirkin
2023-10-12 10:00 ` Zhu, Lingshan
2023-10-12 10:06 ` Michael S. Tsirkin
2023-10-12 10:13 ` Parav Pandit
2023-10-12 10:52 ` Zhu, Lingshan
2023-10-12 10:09 ` Parav Pandit
2023-10-12 10:45 ` Michael S. Tsirkin
2023-10-12 11:23 ` Parav Pandit
2023-10-12 11:10 ` Zhu, Lingshan
2023-10-12 11:37 ` Parav Pandit
2023-10-12 13:03 ` Michael S. Tsirkin
2023-10-12 13:13 ` Parav Pandit
2023-10-13 1:18 ` Jason Wang
2023-10-13 6:40 ` Parav Pandit
2023-10-17 2:10 ` Jason Wang
2023-10-17 3:45 ` Parav Pandit
2023-10-18 0:52 ` Jason Wang
2023-10-18 5:28 ` Parav Pandit
2023-10-19 2:41 ` Jason Wang
2023-10-18 6:13 ` Michael S. Tsirkin
2023-10-13 9:44 ` Zhu, Lingshan
2023-10-13 11:54 ` Parav Pandit
2023-10-16 9:47 ` Zhu, Lingshan
2023-10-18 5:02 ` Parav Pandit
2023-10-18 6:20 ` Michael S. Tsirkin
2023-10-18 6:28 ` Parav Pandit
2023-10-18 6:35 ` Zhu, Lingshan
2023-10-18 6:41 ` Parav Pandit
2023-10-18 6:52 ` Zhu, Lingshan
2023-10-18 7:20 ` Parav Pandit
2023-10-18 8:42 ` Zhu, Lingshan
2023-10-18 8:53 ` Michael S. Tsirkin
2023-10-18 9:48 ` Parav Pandit
2023-10-18 9:56 ` Michael S. Tsirkin
2023-10-18 10:22 ` Parav Pandit
2023-10-18 10:47 ` Michael S. Tsirkin
2023-10-18 10:57 ` Parav Pandit
2023-10-19 8:18 ` Zhu, Lingshan
2023-10-19 8:37 ` Michael S. Tsirkin
2023-10-19 8:49 ` Zhu, Lingshan
2023-10-19 8:55 ` Michael S. Tsirkin
2023-10-23 3:44 ` Jason Wang
2023-10-23 4:42 ` Parav Pandit
2023-10-24 4:56 ` Jason Wang
2023-10-24 10:01 ` Parav Pandit
2023-10-25 1:28 ` Jason Wang
2023-10-25 7:15 ` Parav Pandit
2023-10-25 8:24 ` Michael S. Tsirkin
2023-10-25 9:50 ` Parav Pandit
2023-10-25 10:19 ` Michael S. Tsirkin
2023-10-25 10:22 ` Parav Pandit
2023-10-25 10:28 ` Michael S. Tsirkin
2023-10-26 3:32 ` Parav Pandit
2023-10-26 0:46 ` Jason Wang
2023-10-26 3:50 ` Parav Pandit
2023-10-30 4:04 ` Jason Wang
2023-10-30 4:27 ` Parav Pandit
2023-10-31 1:36 ` Jason Wang
2023-10-31 5:17 ` Parav Pandit
2023-11-01 0:33 ` Jason Wang
2023-11-01 3:07 ` Parav Pandit
2023-11-02 4:24 ` Jason Wang
2023-11-02 6:10 ` Parav Pandit
2023-11-02 14:01 ` Michael S. Tsirkin
2023-11-06 6:35 ` Jason Wang
2023-11-09 6:24 ` Parav Pandit
2023-10-19 8:15 ` Zhu, Lingshan
2023-10-19 9:01 ` Parav Pandit
2023-10-19 9:09 ` Zhu, Lingshan
2023-10-19 9:13 ` Parav Pandit
2023-10-19 9:14 ` Michael S. Tsirkin
2023-10-19 9:18 ` Zhu, Lingshan
2023-10-19 10:33 ` Parav Pandit
2023-10-19 11:19 ` Michael S. Tsirkin
2023-10-19 12:02 ` Parav Pandit
2023-10-20 9:31 ` Zhu, Lingshan
2023-10-20 9:41 ` Michael S. Tsirkin
2023-10-20 11:11 ` Zhu, Lingshan
2023-10-20 12:47 ` Parav Pandit
2023-10-23 9:48 ` Zhu, Lingshan
2023-10-23 10:01 ` Parav Pandit
2023-10-23 10:14 ` Zhu, Lingshan
2023-10-23 10:26 ` Parav Pandit
2023-10-24 10:10 ` Zhu, Lingshan
2023-10-24 10:11 ` Parav Pandit
2023-10-21 15:34 ` Michael S. Tsirkin
2023-10-23 10:03 ` Zhu, Lingshan
2023-10-23 11:32 ` Michael S. Tsirkin
2023-10-24 10:27 ` Zhu, Lingshan
2023-10-25 8:33 ` Michael S. Tsirkin
2023-10-26 0:56 ` Jason Wang
2023-10-26 3:58 ` Parav Pandit
2023-10-30 3:59 ` Jason Wang
2023-10-30 4:49 ` Parav Pandit
2023-10-26 6:22 ` Michael S. Tsirkin
2023-10-30 4:02 ` Jason Wang
2023-11-01 0:33 ` Jason Wang
2023-10-26 6:38 ` Zhu, Lingshan
2023-10-23 3:53 ` Jason Wang
2023-10-23 11:33 ` Michael S. Tsirkin
2023-10-20 12:54 ` Parav Pandit
2023-10-23 10:09 ` Zhu, Lingshan
2023-10-23 10:14 ` Parav Pandit
2023-10-24 10:30 ` Zhu, Lingshan
2023-10-24 10:37 ` Parav Pandit
2023-10-26 6:44 ` Zhu, Lingshan
2023-10-26 7:04 ` Parav Pandit
2023-10-30 3:44 ` Zhu, Lingshan
2023-10-30 4:17 ` Parav Pandit
2023-10-30 10:02 ` Zhu, Lingshan
2023-10-30 10:23 ` Parav Pandit
2023-10-30 11:34 ` Michael S. Tsirkin
2023-10-30 12:02 ` Parav Pandit
2023-10-31 9:35 ` Zhu, Lingshan
2023-10-31 9:42 ` Zhu, Lingshan
2023-10-31 10:14 ` Michael S. Tsirkin
2023-11-01 0:42 ` Jason Wang
2023-11-01 1:57 ` Zhu, Lingshan
2023-11-01 1:57 ` Zhu, Lingshan
2023-11-01 2:54 ` Parav Pandit
2023-11-01 5:31 ` Michael S. Tsirkin
2023-11-01 5:42 ` Parav Pandit
2023-11-01 6:37 ` Michael S. Tsirkin
2023-11-01 6:39 ` Zhu, Lingshan
2023-11-01 6:50 ` Parav Pandit
2023-11-01 6:56 ` Zhu, Lingshan
2023-11-01 7:03 ` Parav Pandit
2023-11-01 7:46 ` Zhu, Lingshan
2023-11-01 7:54 ` Parav Pandit
2023-11-01 8:55 ` Zhu, Lingshan
2023-11-01 9:07 ` Michael S. Tsirkin
2023-11-01 9:42 ` Zhu, Lingshan
2023-11-01 10:23 ` Michael S. Tsirkin
2023-11-01 8:36 ` Michael S. Tsirkin
2023-11-01 10:24 ` Parav Pandit
2023-11-01 6:47 ` Parav Pandit
2023-11-01 8:28 ` Michael S. Tsirkin
2023-11-01 8:49 ` Parav Pandit
2023-11-01 9:06 ` Michael S. Tsirkin
2023-11-01 10:01 ` Parav Pandit
2023-10-30 11:27 ` Michael S. Tsirkin
2023-10-30 11:48 ` Parav Pandit
2023-10-31 9:45 ` Zhu, Lingshan
2023-10-19 9:16 ` Zhu, Lingshan
2023-10-19 9:13 ` Michael S. Tsirkin
2023-10-13 13:49 ` Michael S. Tsirkin
2023-10-16 9:50 ` Zhu, Lingshan
2023-11-02 14:21 ` Michael S. Tsirkin
2023-11-02 14:40 ` [virtio-comment] " Parav Pandit
2023-11-02 14:53 ` [virtio-comment] " Michael S. Tsirkin
2023-11-02 15:06 ` [virtio-comment] " Parav Pandit
2023-11-02 17:05 ` [virtio-comment] " Michael S. Tsirkin
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 4/8] admin: Add device migration admin commands Parav Pandit
2023-10-18 6:46 ` [virtio-comment] " Michael S. Tsirkin
2023-10-18 8:24 ` [virtio-comment] " Parav Pandit
2023-10-18 10:26 ` [virtio-comment] " Michael S. Tsirkin
2023-10-18 10:41 ` [virtio-comment] " Parav Pandit
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 5/8] admin: Add requirements of device migration commands Parav Pandit
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 6/8] admin: Add theory of operation for write recording commands Parav Pandit
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 7/8] admin: Add " Parav Pandit
2023-10-08 11:52 ` [virtio-comment] " Michael S. Tsirkin
2023-10-09 4:14 ` [virtio-comment] " Parav Pandit
2023-10-09 10:57 ` [virtio-comment] " Michael S. Tsirkin
2023-10-09 11:48 ` Parav Pandit
2023-10-09 16:15 ` Michael S. Tsirkin
2023-10-09 17:22 ` Parav Pandit
2023-10-08 11:25 ` [virtio-comment] [PATCH v1 8/8] admin: Add requirements of write reporting commands Parav Pandit
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