Re: [PATCH v4 09/19] migration: Postcopy preemption preparation on channel creation

[Daniel P . Berrangé]

On Thu, Mar 31, 2022 at 11:08:47AM -0400, Peter Xu wrote:
> Create a new socket for postcopy to be prepared to send postcopy requested
> pages via this specific channel, so as to not get blocked by precopy pages.
> 
> A new thread is also created on dest qemu to receive data from this new 
> channel
> based on the ram_load_postcopy() routine.
> 
> The ram_load_postcopy(POSTCOPY) branch and the thread has not started to
> function, and that'll be done in follow up patches.
> 
> Cleanup the new sockets on both src/dst QEMUs, meanwhile look after the new
> thread too to make sure it'll be recycled properly.
> 
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
>  migration/migration.c    | 62 +++++++++++++++++++++++----
>  migration/migration.h    |  8 ++++
>  migration/postcopy-ram.c | 92 ++++++++++++++++++++++++++++++++++++++--
>  migration/postcopy-ram.h | 10 +++++
>  migration/ram.c          | 25 ++++++++---
>  migration/ram.h          |  4 +-
>  migration/savevm.c       | 20 ++++-----
>  migration/socket.c       | 22 +++++++++-
>  migration/socket.h       |  1 +
>  migration/trace-events   |  5 ++-
>  10 files changed, 218 insertions(+), 31 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


With regards,
Daniel
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