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memory: convert memory_region_destroy to object_unparent

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Explicitly call object_unparent in the few places where we
will re-create the memory region.  If the memory region is
simply being destroyed as part of device teardown, let QOM
handle it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-06-11 12:42:01 +02:00
parent e3fb0ade83
commit d8d9581460
9 changed files with 18 additions and 14 deletions
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15
docs/memory.txt
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@ -74,11 +74,16 @@ Region lifecycle
----------------
A region is created by one of the constructor functions (memory_region_init*())
and destroyed by the destructor (memory_region_destroy()). In between,
a region can be added to an address space by using memory_region_add_subregion()
and removed using memory_region_del_subregion(). Region attributes may be
changed at any point; they take effect once the region becomes exposed to the
guest.
and attached to an object. It is then destroyed by object_unparent() or simply
when the parent object dies.
In between, a region can be added to an address space
by using memory_region_add_subregion() and removed using
memory_region_del_subregion(). Destroying the region implicitly
removes the region from the address space.
Region attributes may be changed at any point; they take effect once
the region becomes exposed to the guest.
Overlapping regions and priority
--------------------------------