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memory: Open code FlatView rendering

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We are going to share FlatView's between AddressSpace's and per-AS
memory listeners won't suit the purpose anymore so open code
the dispatch tree rendering.

Since there is a good chance that dispatch_listener was the only
listener, this avoids address_space_update_topology_pass() if there is
no registered listeners; this should improve starting time.

This should cause no behavioural change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20170921085110.25598-3-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alexey Kardashevskiy
2017-09-21 18:50:54 +10:00
committed by Paolo Bonzini
parent e76bb18f7e
commit 9a62e24f45
4 changed files with 21 additions and 32 deletions
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include/exec/memory.h
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@@ -318,7 +318,6 @@ struct AddressSpace {
struct MemoryRegionIoeventfd *ioeventfds;
struct AddressSpaceDispatch *dispatch;
struct AddressSpaceDispatch *next_dispatch;
MemoryListener dispatch_listener;
QTAILQ_HEAD(memory_listeners_as, MemoryListener) listeners;
QTAILQ_ENTRY(AddressSpace) address_spaces_link;
};