Re: [PATCH 00/20] migration: Postcopy Preemption

[Peter Xu]

On Wed, Feb 16, 2022 at 02:27:49PM +0800, Peter Xu wrote:
> The new patch layout:
> 
> Patch 1-3: Three leftover patches from patchset "[PATCH v3 0/8] migration:
> Postcopy cleanup on ram disgard" that I picked up here too.
> 
>   https://lore.kernel.org/qemu-devel/20211224065000.97572-1-peterx@redhat.com/
> 
>   migration: Dump sub-cmd name in loadvm_process_command tp
>   migration: Finer grained tracepoints for POSTCOPY_LISTEN
>   migration: Tracepoint change in postcopy-run bottom half
> 
> Patch 4-9: Original postcopy preempt RFC preparation patches (with slight
> modifications).
> 
>   migration: Introduce postcopy channels on dest node
>   migration: Dump ramblock and offset too when non-same-page detected
>   migration: Add postcopy_thread_create()
>   migration: Move static var in ram_block_from_stream() into global
>   migration: Add pss.postcopy_requested status
>   migration: Move migrate_allow_multifd and helpers into migration.c
> 
> Patch 10-15: Some newly added patches when working on postcopy recovery
> support.  After these patches migrate-recover command will allow re-entrance,
> which is a very nice side effect.
> 
>   migration: Enlarge postcopy recovery to capture !-EIO too
>   migration: postcopy_pause_fault_thread() never fails
>   migration: Export ram_load_postcopy()
>   migration: Move channel setup out of postcopy_try_recover()
>   migration: Add migration_incoming_transport_cleanup()
>   migration: Allow migrate-recover to run multiple times

Patches before 15 are IMHO good in various aspects with/without the new
preemption, so they can be considered for review earlier.

Especially:

    migration: Enlarge postcopy recovery to capture !-EIO too
    migration: Add migration_incoming_transport_cleanup()
    migration: Allow migrate-recover to run multiple times

Thanks,

-- 
Peter Xu