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authorEric Auger <eric.auger@redhat.com>2019-10-11 14:17:24 +0200
committerDr. David Alan Gilbert <dgilbert@redhat.com>2019-10-11 17:52:31 +0100
commit9a85e4b8f672016adbf7b7d5beaab2a99b9b5615 (patch)
tree6ccaef0cf13914ec1c9b58cf2d138548c7f370ad /fsdev/qemu-fsdev.c
parentaff66d2ef024372a27761959b46a306a6ab92f47 (diff)
downloadfocaccia-qemu-9a85e4b8f672016adbf7b7d5beaab2a99b9b5615.tar.gz
focaccia-qemu-9a85e4b8f672016adbf7b7d5beaab2a99b9b5615.zip
migration: Support gtree migration
Introduce support for GTree migration. A custom save/restore
is implemented. Each item is made of a key and a data.

If the key is a pointer to an object, 2 VMSDs are passed into
the GTree VMStateField.

When putting the items, the tree is traversed in sorted order by
g_tree_foreach.

On the get() path, gtrees must be allocated using the proper
key compare, key destroy and value destroy. This must be handled
beforehand, for example in a pre_load method.

Tests are added to test save/dump of structs containing gtrees
including the virtio-iommu domain/mappings scenario.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

Message-Id: <20191011121724.433-1-eric.auger@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  uintptr_t fixup for test on 32bit
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