On Sun, 27 Feb 2022 23:46:01 -0800, Haren Myneni wrote:
> Virtual Accelerator Switchboard (VAS) is an engine stays on the
> chip. So all windows opened on a specific engine belongs to VAS
> the chip. The hypervisor expects the partition to close all
> active windows on the sources system and reopen them after
> migration on the destination machine.
>
> This patch series adds VAS support with the partition migration.
> When the migration initiates, the VAS migration handler will be
> invoked before pseries_suspend() to close all active windows and
> mark them in-active with VAS_WIN_MIGRATE_CLOSE status. Whereas
> this migration handler is called after migration to reopen all
> windows which has VAS_WIN_MIGRATE_CLOSE status and make them
> active again. The user space gets paste instruction failure
> when it sends requests on these in-active windows.
>
> [...]
Applied to powerpc/next.
[1/3] powerpc/pseries/vas: Define global hv_cop_caps struct
https://git.kernel.org/powerpc/c/278fe1cc2205a05bfd92c794be3d207372b17289
[2/3] powerpc/pseries/vas: Modify reconfig open/close functions for migration
https://git.kernel.org/powerpc/c/716d7a2e3764cb79061371767bff1a691adb4e7f
[3/3] powerpc/pseries/vas: Add VAS migration handler
https://git.kernel.org/powerpc/c/37e6764895ef7431f45ff603a548549d409993d2
cheers
