Re: [PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-08 Thread Avihai Horon
On 08/02/2023 19:22, Alex Williamson wrote: External email: Use caution opening links or attachments On Wed, 8 Feb 2023 15:08:15 +0200 Avihai Horon wrote: On 08/02/2023 0:34, Alex Williamson wrote: External email: Use caution opening links or attachments On Mon, 6 Feb 2023 14:31:30

Re: [PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-08 Thread Alex Williamson
On Wed, 8 Feb 2023 15:08:15 +0200 Avihai Horon wrote: > On 08/02/2023 0:34, Alex Williamson wrote: > > External email: Use caution opening links or attachments > > > > > > On Mon, 6 Feb 2023 14:31:30 +0200 > > Avihai Horon wrote: > > > >> Currently VFIO migration doesn't implement some kind

Re: [PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-08 Thread Avihai Horon
On 08/02/2023 18:44, Cédric Le Goater wrote: External email: Use caution opening links or attachments On 2/8/23 14:08, Avihai Horon wrote: On 08/02/2023 0:34, Alex Williamson wrote: External email: Use caution opening links or attachments On Mon, 6 Feb 2023 14:31:30 +0200 Avihai Horon

Re: [PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-08 Thread Cédric Le Goater
On 2/8/23 14:08, Avihai Horon wrote: On 08/02/2023 0:34, Alex Williamson wrote: External email: Use caution opening links or attachments On Mon, 6 Feb 2023 14:31:30 +0200 Avihai Horon wrote: Currently VFIO migration doesn't implement some kind of intermediate quiescent state in which P2P

Re: [PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-08 Thread Avihai Horon
On 08/02/2023 0:34, Alex Williamson wrote: External email: Use caution opening links or attachments On Mon, 6 Feb 2023 14:31:30 +0200 Avihai Horon wrote: Currently VFIO migration doesn't implement some kind of intermediate quiescent state in which P2P DMAs are quiesced before stopping or

Re: [PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-07 Thread Alex Williamson
On Mon, 6 Feb 2023 14:31:30 +0200 Avihai Horon 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

[PATCH v9 07/14] vfio/migration: Block multiple devices migration

2023-02-06 Thread Avihai Horon
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