netdev - Re: [PATCH net-next V2 7/8] devlink: Expose port function commands to control migratable

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 2 Dec 2022 10:02:43 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Shay Drory <shayd@...dia.com>
Cc:     netdev@...r.kernel.org, kuba@...nel.org, davem@...emloft.net,
        danielj@...dia.com, yishaih@...dia.com, jiri@...dia.com,
        saeedm@...dia.com, parav@...dia.com
Subject: Re: [PATCH net-next V2 7/8] devlink: Expose port function commands
 to control migratable

Fri, Dec 02, 2022 at 09:26:21AM CET, shayd@...dia.com wrote:
>Expose port function commands to enable / disable migratable
>capability, this is used to set the port function as migratable.
>
>Live migration is the process of transferring a live virtual machine
>from one physical host to another without disrupting its normal
>operation.
>
>In order for a VM to be able to perform LM, all the VM components must
>be able to perform migration. e.g.: to be migratable.
>In order for VF to be migratable, VF must be bound to VFIO driver with
>migration support.
>
>When migratable capability is enable for a function of the port, the
>device is making the necessary preparations for the function to be
>migratable, which might include disabling features which cannot be
>migrated.
>
>Example of LM with migratable function configuration:
>Set migratable of the VF's port function.
>
>$ devlink port show pci/0000:06:00.0/2
>pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
>vfnum 1
>    function:
>        hw_addr 00:00:00:00:00:00 migratable disable
>
>$ devlink port function set pci/0000:06:00.0/2 migratable enable
>
>$ devlink port show pci/0000:06:00.0/2
>pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
>vfnum 1
>    function:
>        hw_addr 00:00:00:00:00:00 migratable enable
>
>Bind VF to VFIO driver with migration support:
>$ echo <pci_id> > /sys/bus/pci/devices/0000:08:00.0/driver/unbind
>$ echo mlx5_vfio_pci > /sys/bus/pci/devices/0000:08:00.0/driver_override
>$ echo <pci_id> > /sys/bus/pci/devices/0000:08:00.0/driver/bind
>
>Attach VF to the VM.
>Start the VM.
>Perform LM.
>
>Signed-off-by: Shay Drory <shayd@...dia.com>
>Reviewed-by: Jiri Pirko <jiri@...dia.com>
>Reported-by: kernel test robot <lkp@...el.com>

I believe that you put reported by only to patches that fix the reported
issue which exists in-tree. It does not apply to issues found on
a submitted patch.