memory: Move AddressSpaceDispatch from AddressSpace to FlatView

As we are going to share FlatView's between AddressSpace's,
and AddressSpaceDispatch is a structure to perform quick lookup
in FlatView, this moves ASD to FlatView.

After previosly open coded ASD rendering, we can also remove
as->next_dispatch as the new FlatView pointer is stored
on a stack and set to an AS atomically.

flatview_destroy() is executed under RCU instead of
address_space_dispatch_free() now.

This makes mem_begin/mem_commit to work with ASD and mem_add with FV
as later on mem_add will be taking FV as an argument anyway.

This should cause no behavioural change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20170921085110.25598-5-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 9581f7a7db..2346f8b863 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -316,8 +316,6 @@ struct AddressSpace {
 
     int ioeventfd_nb;
     struct MemoryRegionIoeventfd *ioeventfds;
-    struct AddressSpaceDispatch *dispatch;
-    struct AddressSpaceDispatch *next_dispatch;
     QTAILQ_HEAD(memory_listeners_as, MemoryListener) listeners;
     QTAILQ_ENTRY(AddressSpace) address_spaces_link;
 };