memory: per-AddressSpace dispatch

Currently we use a global radix tree to dispatch memory access.  This only
works with a single address space; to support multiple address spaces we
make the radix tree a member of AddressSpace (via an intermediate structure
AddressSpaceDispatch to avoid exposing too many internals).

A side effect is that address_space_io also gains a dispatch table.  When
we remove all the pre-memory-API I/O registrations, we can use that for
dispatching I/O and get rid of the original I/O dispatch.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/memory.c b/memory.c
index 0cf0177f43..13be84849c 100644
--- a/memory.c
+++ b/memory.c
@@ -1539,6 +1539,7 @@ void address_space_init(AddressSpace *as, MemoryRegion *root)
     QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
     as->name = NULL;
     memory_region_transaction_commit();
+    address_space_init_dispatch(as);
 }
 
 uint64_t io_mem_read(MemoryRegion *mr, target_phys_addr_t addr, unsigned size)