Re: [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations

[David Hildenbrand <david@redhat.com>]

On 05.01.23 22:11, Peter Xu wrote:
> On Thu, Jan 05, 2023 at 01:45:23PM +0100, David Hildenbrand wrote:
>> Playing with background snapshots in combination with hugetlb and
>> virtio-mem, I found two issues and some reasonable optimizations (skip
>> unprotecting when unregistering).
>>
>> With virtio-mem (RamDiscardManager), we now won't be allocating unnecessary
>> page tables for unplugged ranges when using uffd-wp with shmem/hugetlb.
>>
>> Cc: Juan Quintela <quintela@redhat.com> (maintainer:Migration)
>> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> (maintainer:Migration)
>> Cc: Peter Xu <peterx@redhat.com>
>> Cc: Andrey Gruzdev <andrey.gruzdev@virtuozzo.com>
>>
>> David Hildenbrand (5):
>>    migration/ram: Fix populate_read_range()
>>    migration/ram: Fix error handling in ram_write_tracking_start()
>>    migration/ram: Don't explicitly unprotect when unregistering uffd-wp
>>    migration/ram: Rely on used_length for uffd_change_protection()
>>    migration/ram: Optimize ram_write_tracking_start() for
>>      RamDiscardManager
> 
> For the series:
> 
> Acked-by: Peter Xu <peterx@redhat.com>

Thanks!

-- 
Thanks,

David / dhildenb