From: Jason Gunthorpe <jgg@nvidia.com>
To: Peter Xu <peterx@redhat.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"intel-wired-lan@lists.osuosl.org"
<intel-wired-lan@lists.osuosl.org>,
"Burra, Phani R" <phani.r.burra@intel.com>
Subject: Re: [Intel-wired-lan] [PATCH iwl-next V2 10/15] ice: save and restore TX queue head
Date: Tue, 18 Jul 2023 12:38:58 -0300 [thread overview]
Message-ID: <ZLayEkkaFgshJuDx@nvidia.com> (raw)
In-Reply-To: <ZLW2BgWI+yx7qKaf@x1n>
On Mon, Jul 17, 2023 at 05:43:34PM -0400, Peter Xu wrote:
> It may boil down to why we need to avoid migrating vIOMMU before other
> devices (which I am still unsure about..), and which way is easier.
The statement is just that the kernel cannot assume anything about
vIOMMU ordering and people can't make VFIO migration drivers that
assume the vIOMMU is setup before the entry to running.
That qemu enforces this ordering today for pointless reasons is
interesting, but it should not leak into becoming the ABI contract of
the kernel.
Jason
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next prev parent reply other threads:[~2023-07-18 15:39 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-21 9:10 [Intel-wired-lan] [PATCH iwl-next V2 00/15] Add E800 live migration driver Lingyu Liu
2023-06-21 9:10 ` [Intel-wired-lan] [PATCH iwl-next V2 01/15] ice: Fix missing legacy 32byte RXDID in the supported bitmap Lingyu Liu
2023-06-21 9:10 ` [Intel-wired-lan] [PATCH iwl-next V2 02/15] ice: add function to get rxq context Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 03/15] ice: check VF migration status before sending messages to VF Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 04/15] ice: add migration init field and helper functions Lingyu Liu
2023-06-21 13:35 ` Jason Gunthorpe
2023-06-27 7:50 ` Cao, Yahui
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 05/15] ice: save VF messages as device state Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 06/15] ice: save and restore " Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 07/15] ice: do not notify VF link state during migration Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 08/15] ice: change VSI id in virtual channel message after migration Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 09/15] ice: save and restore RX queue head Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 10/15] ice: save and restore TX " Lingyu Liu
2023-06-21 14:37 ` Jason Gunthorpe
2023-06-27 6:55 ` Tian, Kevin
2023-07-03 5:27 ` Cao, Yahui
2023-07-03 21:03 ` Jason Gunthorpe
2023-07-04 7:35 ` Tian, Kevin
2023-06-28 8:11 ` Liu, Yi L
2023-06-28 12:39 ` Jason Gunthorpe
2023-07-03 12:54 ` Liu, Yi L
2023-07-04 7:38 ` Tian, Kevin
2023-07-04 17:59 ` Peter Xu
2023-07-10 15:54 ` Jason Gunthorpe
2023-07-17 21:43 ` Peter Xu
2023-07-18 15:38 ` Jason Gunthorpe [this message]
2023-07-18 17:36 ` Peter Xu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 11/15] ice: stop device before saving device states Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 12/15] ice: mask VF advanced capabilities if live migration is activated Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 13/15] vfio/ice: implement vfio_pci driver for E800 devices Lingyu Liu
2023-06-21 14:23 ` Jason Gunthorpe
2023-06-27 9:00 ` Liu, Lingyu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 14/15] vfio: Expose vfio_device_has_container() Lingyu Liu
2023-06-21 9:11 ` [Intel-wired-lan] [PATCH iwl-next V2 15/15] vfio/ice: support iommufd vfio compat mode Lingyu Liu
2023-06-21 14:40 ` Jason Gunthorpe
2023-06-27 8:09 ` Cao, Yahui
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