From: Juan Quintela <quintela@redhat.com>
To: Avihai Horon <avihaih@nvidia.com>
Cc: qemu-devel@nongnu.org,
"Alex Williamson" <alex.williamson@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Cornelia Huck" <cohuck@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Vladimir Sementsov-Ogievskiy" <vsementsov@yandex-team.ru>,
"Cédric Le Goater" <clg@redhat.com>,
"Yishai Hadas" <yishaih@nvidia.com>,
"Jason Gunthorpe" <jgg@nvidia.com>,
"Maor Gottlieb" <maorg@nvidia.com>,
"Kirti Wankhede" <kwankhede@nvidia.com>,
"Tarun Gupta" <targupta@nvidia.com>,
"Joao Martins" <joao.m.martins@oracle.com>
Subject: Re: [PATCH v10 06/12] vfio/migration: Block multiple devices migration
Date: Wed, 15 Feb 2023 13:46:14 +0100 [thread overview]
Message-ID: <87y1oz2j1l.fsf@secure.mitica> (raw)
In-Reply-To: <20230209192043.14885-7-avihaih@nvidia.com> (Avihai Horon's message of "Thu, 9 Feb 2023 21:20:37 +0200")
Avihai Horon <avihaih@nvidia.com> wrote:
> Currently VFIO migration doesn't implement some kind of intermediate
> quiescent state in which P2P DMAs are quiesced before stopping or
> running the device. This can cause problems in multi-device migration
> where the devices are doing P2P DMAs, since the devices are not stopped
> together at the same time.
>
> Until such support is added, block migration of multiple devices.
>
> Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
With respect to how it intercat with migration.
next prev parent reply other threads:[~2023-02-15 12:46 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-09 19:20 [PATCH v10 00/12] vfio/migration: Implement VFIO migration protocol v2 Avihai Horon
2023-02-09 19:20 ` [PATCH v10 01/12] linux-headers: Update to v6.2-rc1 Avihai Horon
2023-02-09 19:20 ` [PATCH v10 02/12] vfio/migration: Fix NULL pointer dereference bug Avihai Horon
2023-02-09 19:20 ` [PATCH v10 03/12] vfio/migration: Allow migration without VFIO IOMMU dirty tracking support Avihai Horon
2023-02-15 12:43 ` Juan Quintela
2023-02-15 17:47 ` Avihai Horon
2023-02-15 18:04 ` Juan Quintela
2023-02-15 20:14 ` Alex Williamson
2023-02-15 20:38 ` Jason Gunthorpe
2023-02-15 21:02 ` Alex Williamson
2023-02-09 19:20 ` [PATCH v10 04/12] migration/qemu-file: Add qemu_file_get_to_fd() Avihai Horon
2023-02-09 23:50 ` Alex Williamson
2023-02-15 7:33 ` Juan Quintela
2023-02-09 19:20 ` [PATCH v10 05/12] vfio/common: Change vfio_devices_all_running_and_saving() logic to equivalent one Avihai Horon
2023-02-09 19:20 ` [PATCH v10 06/12] vfio/migration: Block multiple devices migration Avihai Horon
2023-02-10 13:56 ` Cédric Le Goater
2023-02-15 12:46 ` Juan Quintela [this message]
2023-02-09 19:20 ` [PATCH v10 07/12] vfio/migration: Move migration v1 logic to vfio_migration_init() Avihai Horon
2023-02-09 19:20 ` [PATCH v10 08/12] vfio/migration: Rename functions/structs related to v1 protocol Avihai Horon
2023-02-09 19:20 ` [PATCH v10 09/12] vfio/migration: Implement VFIO migration protocol v2 Avihai Horon
2023-02-15 13:01 ` Juan Quintela
2023-02-15 18:23 ` Avihai Horon
2023-02-15 20:53 ` Alex Williamson
2023-02-16 8:15 ` Avihai Horon
2023-02-09 19:20 ` [PATCH v10 10/12] vfio/migration: Remove VFIO migration protocol v1 Avihai Horon
2023-02-15 13:02 ` Juan Quintela
2023-02-09 19:20 ` [PATCH v10 11/12] vfio: Alphabetize migration section of VFIO trace-events file Avihai Horon
2023-02-15 13:03 ` Juan Quintela
2023-02-09 19:20 ` [PATCH v10 12/12] docs/devel: Align VFIO migration docs to v2 protocol Avihai Horon
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