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From: Juan Quintela <quintela@redhat.com>
To: Eric Blake <eblake@redhat.com>
Cc: qemu-devel@nongnu.org,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
	"Markus Armbruster" <armbru@redhat.com>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Yanan Wang" <wangyanan55@huawei.com>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Eduardo Habkost" <eduardo@habkost.net>
Subject: Re: [PATCH v3 1/6] multifd: Create property multifd-sync-after-each-section
Date: Thu, 09 Feb 2023 14:22:46 +0100	[thread overview]
Message-ID: <87ttzv3rdl.fsf@secure.mitica> (raw)
In-Reply-To: <20230208202526.p2jmikndw5lx2ong@redhat.com> (Eric Blake's message of "Wed, 8 Feb 2023 14:25:26 -0600")

Eric Blake <eblake@redhat.com> wrote:
> On Wed, Feb 08, 2023 at 02:30:05PM +0100, Juan Quintela wrote:
>> We used to synchronize all channels at the end of each RAM section
>> sent.  That is not needed, so preparing to only synchronize once every
>> full round in latests patches.
>> 
>> Notice that we initialize the property as true.  We will change the
>> default when we introduce the new mechanism.
>> 
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>> 
>> ---
>> 
>> Rename each-iteration to after-each-section
>> 
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>> ---
>>  qapi/migration.json   |  9 ++++++++-
>>  migration/migration.h |  1 +
>>  hw/core/machine.c     |  1 +
>>  migration/migration.c | 15 +++++++++++++--
>>  4 files changed, 23 insertions(+), 3 deletions(-)
>> 
>> diff --git a/qapi/migration.json b/qapi/migration.json
>> index c84fa10e86..d712b082c8 100644
>> --- a/qapi/migration.json
>> +++ b/qapi/migration.json
>> @@ -478,6 +478,12 @@
>>  #                    should not affect the correctness of postcopy migration.
>>  #                    (since 7.1)
>>  #
>> +# @multifd-sync-after-each-section: Synchronize channels after each
>> +#                                   section is sent.  We used to do
>> +#                                   that on the past, but it is
>
> s/on/in/

good catch.

>> +#                                   suboptimal.
>> +#                                   (since 7.1)
>
> Shouldn't this be 8.0 now?

You are right (as always).

Changing it.  Thanks.



  parent reply	other threads:[~2023-02-09 13:23 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-08 13:30 [PATCH v3 0/6] Eliminate multifd flush Juan Quintela
2023-02-08 13:30 ` [PATCH v3 1/6] multifd: Create property multifd-sync-after-each-section Juan Quintela
     [not found]   ` <20230208202526.p2jmikndw5lx2ong@redhat.com>
2023-02-09 13:22     ` Juan Quintela [this message]
2023-02-08 13:30 ` [PATCH v3 2/6] multifd: Protect multifd_send_sync_main() calls Juan Quintela
2023-02-08 13:30 ` [PATCH v3 3/6] migration: Simplify ram_find_and_save_block() Juan Quintela
2023-02-08 13:30 ` [PATCH v3 4/6] migration: Make find_dirty_block() return a single parameter Juan Quintela
2023-02-08 13:30 ` [PATCH v3 5/6] multifd: Only sync once each full round of memory Juan Quintela
2023-02-08 13:30 ` [PATCH v3 6/6] ram: Document migration ram flags Juan Quintela
2023-02-08 20:29   ` Eric Blake
2023-02-09 13:27     ` Juan Quintela

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