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* Move loadvm_handlers into MigrationIncomingStateDr. David Alan Gilbert2015-06-121-12/+16
| | | | | | | | | | | In postcopy we need the loadvm_handlers to be used in a couple of different instances of the loadvm loop/routine, and thus it can't be local any more. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
* Create MigrationIncomingStateDr. David Alan Gilbert2015-06-121-0/+2
| | | | | | | | | | | | | | There are currently lots of pieces of incoming migration state scattered around, and postcopy is adding more, and it seems better to try and keep it together. allocate MIS in process_incoming_migration_co Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
* Split header writing out of qemu_savevm_state_beginDr. David Alan Gilbert2015-06-121-3/+8
| | | | | | | | | | | | | | | Split qemu_savevm_state_begin to: qemu_savevm_state_header That writes the initial file header. qemu_savevm_state_begin That sets up devices and does the first device pass. Used later in postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
* Add qemu_get_counted_string to read a string prefixed by a count byteDr. David Alan Gilbert2015-06-121-5/+6
| | | | | | | | | | | | | | | and use it in loadvm_state and ram_load. Where ever it's used, check the return and error if it failed. Minor: ram_load was using a 257 byte array for its string, the maximum length is 255 bytes + 0 terminator, so fix to 256 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: Use normal VMStateDescriptions for SubsectionsJuan Quintela2015-06-121-5/+5
| | | | | | | | | | | | | | | | We create optional sections with this patch. But we already have optional subsections. Instead of having two mechanism that do the same, we can just generalize it. For subsections we just change: - Add a needed function to VMStateDescription - Remove VMStateSubsection (after removal of the needed function it is just a VMStateDescription) - Adjust the whole tree, moving the needed function to the corresponding VMStateDescription Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: create savevm_stateJuan Quintela2015-06-121-24/+29
| | | | | | | This way, we will put savevm global state here, instead of lots of variables. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: Add myself to the copyright list of both filesJuan Quintela2015-06-121-0/+4
| | | | | | | If anyone feels like adding himself to the list, just sent me a patch. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* migration: move savevm.c inside migration/Juan Quintela2015-06-121-0/+1435
Now, everything is in place. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>