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migration/ram: Move RAM_SAVE_FLAG* into ram.h

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Firstly, we're going to use the multifd flag soon in multifd code, so ram.c
isn't gonna work.

Secondly, we have a separate RDMA flag dangling around, which is definitely
not obvious.  There's one comment that helps, but not too much.

Put all RAM save flags altogether, so nothing will get overlooked.

Add a section explain why we can't use bits over 0x200.

Remove RAM_SAVE_FLAG_FULL as it's already not used in QEMU, as the comment
explained.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20241206224755.1108686-4-peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Peter Xu 2024-12-06 17:47:51 -05:00 • committed by Fabiano Rosas
parent 10801e08ac
commit 604b4749c5
3 changed files with 28 additions and 28 deletions
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7
migration/rdma.h
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@ -33,13 +33,6 @@ void rdma_start_incoming_migration(InetSocketAddress *host_port, Error **errp);
#define RAM_CONTROL_ROUND 1
#define RAM_CONTROL_FINISH 3
/*
* Whenever this is found in the data stream, the flags
* will be passed to rdma functions in the incoming-migration
* side.
*/
#define RAM_SAVE_FLAG_HOOK 0x80
#define RAM_SAVE_CONTROL_NOT_SUPP -1000
#define RAM_SAVE_CONTROL_DELAYED -2000