From: Juan Quintela <quintela@redhat.com>
To: "Leonardo Brás" <leobras@redhat.com>
Cc: qemu-devel@nongnu.org,
"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Peter Xu" <peterx@redhat.com>, "Eric Blake" <eblake@redhat.com>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"Yanan Wang" <wangyanan55@huawei.com>,
"Markus Armbruster" <armbru@redhat.com>,
"Eduardo Habkost" <eduardo@habkost.net>
Subject: Re: [PATCH v7 01/12] multifd: Create page_size fields into both MultiFD{Recv,Send}Params
Date: Sat, 13 Aug 2022 17:41:51 +0200 [thread overview]
Message-ID: <87v8qwdubk.fsf@secure.mitica> (raw)
In-Reply-To: <7b781bcb37cda71e3cd19364940719f832573462.camel@redhat.com> ("Leonardo Brás"'s message of "Thu, 11 Aug 2022 05:10:51 -0300")
Leonardo Brás <leobras@redhat.com> wrote:
> Hello Juan,
>
> On Tue, 2022-08-02 at 08:38 +0200, Juan Quintela wrote:
>> We were calling qemu_target_page_size() left and right.
>>
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>
> IMHO looks a good idea to bring that info inside the multifd parameters.
Thanks.
[...]
> IIUC this info should never change after assigned, and is the same on every
> multifd channel param.
registered_yank? Perhaps, I have to look.
packet_len, page_size, page_count and write_flags: They never really change.
But on the other hand, So we are "wasting" 16bytes per channel.
> I wonder if it would be interesting to have a common area for this kind of info,
> which could be referenced by every multifd channel parameter.
> Or maybe too much trouble?
Will take a look on the future, the bigger problem that I can think of
is that we are already passing the MultiFD{Send,Recv}Params to each
function, so having them globaly will means to have global variable or
adding a pointer (8bytes) to each params, so not sure it is a good idea
with current amount of constants.
> Anyway, FWIW:
> Reviewed-by: Leonardo Bras <leobras@redhat.com>
thanks, Juan.
next prev parent reply other threads:[~2022-08-13 16:15 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-02 6:38 [PATCH v7 00/12] Migration: Transmit and detect zero pages in the multifd threads Juan Quintela
2022-08-02 6:38 ` [PATCH v7 01/12] multifd: Create page_size fields into both MultiFD{Recv, Send}Params Juan Quintela
2022-08-11 8:10 ` [PATCH v7 01/12] multifd: Create page_size fields into both MultiFD{Recv,Send}Params Leonardo Brás
2022-08-13 15:41 ` Juan Quintela [this message]
2022-08-02 6:38 ` [PATCH v7 02/12] multifd: Create page_count fields into both MultiFD{Recv, Send}Params Juan Quintela
2022-08-11 8:10 ` [PATCH v7 02/12] multifd: Create page_count fields into both MultiFD{Recv,Send}Params Leonardo Brás
2022-08-02 6:38 ` [PATCH v7 03/12] migration: Export ram_transferred_ram() Juan Quintela
2022-08-11 8:11 ` Leonardo Brás
2022-08-13 15:36 ` Juan Quintela
2022-08-02 6:38 ` [PATCH v7 04/12] multifd: Count the number of bytes sent correctly Juan Quintela
2022-08-11 8:11 ` Leonardo Brás
2022-08-19 9:35 ` Juan Quintela
2022-08-02 6:39 ` [PATCH v7 05/12] migration: Make ram_save_target_page() a pointer Juan Quintela
2022-08-11 8:11 ` Leonardo Brás
2022-08-19 9:51 ` Juan Quintela
2022-08-20 7:14 ` Leonardo Bras Soares Passos
2022-08-22 21:35 ` Juan Quintela
2022-08-02 6:39 ` [PATCH v7 06/12] multifd: Make flags field thread local Juan Quintela
2022-08-11 9:04 ` Leonardo Brás
2022-08-19 10:03 ` Juan Quintela
2022-08-20 7:24 ` Leonardo Bras Soares Passos
2022-08-23 13:00 ` Juan Quintela
2022-08-02 6:39 ` [PATCH v7 07/12] multifd: Prepare to send a packet without the mutex held Juan Quintela
2022-08-11 9:16 ` Leonardo Brás
2022-08-19 11:32 ` Juan Quintela
2022-08-20 7:27 ` Leonardo Bras Soares Passos
2022-08-02 6:39 ` [PATCH v7 08/12] multifd: Add capability to enable/disable zero_page Juan Quintela
2022-08-11 9:29 ` Leonardo Brás
2022-08-19 11:36 ` Juan Quintela
2022-08-02 6:39 ` [PATCH v7 09/12] migration: Export ram_release_page() Juan Quintela
2022-08-11 9:31 ` Leonardo Brás
2022-08-02 6:39 ` [PATCH v7 10/12] multifd: Support for zero pages transmission Juan Quintela
2022-09-02 13:27 ` Leonardo Brás
2022-11-14 12:09 ` Juan Quintela
2022-10-25 9:10 ` chuang xu
2022-11-14 12:10 ` Juan Quintela
2022-08-02 6:39 ` [PATCH v7 11/12] multifd: Zero " Juan Quintela
2022-09-02 13:27 ` Leonardo Brás
2022-11-14 12:20 ` Juan Quintela
2022-11-14 12:27 ` Juan Quintela
2022-08-02 6:39 ` [PATCH v7 12/12] So we use multifd to transmit zero pages Juan Quintela
2022-09-02 13:27 ` Leonardo Brás
2022-11-14 12:30 ` Juan Quintela
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