memory: add address_space_destroy()
Since address spaces can be created dynamically by device hotplug, they can also be destroyed dynamically. Signed-off-by: Avi Kivity <avi@redhat.com>
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parent
b90600eed3
commit
83f3c25142
10
exec.c
10
exec.c
@ -3234,6 +3234,16 @@ void address_space_init_dispatch(AddressSpace *as)
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memory_listener_register(&d->listener, as);
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memory_listener_register(&d->listener, as);
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}
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}
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void address_space_destroy_dispatch(AddressSpace *as)
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{
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AddressSpaceDispatch *d = as->dispatch;
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memory_listener_unregister(&d->listener);
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destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1);
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g_free(d);
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as->dispatch = NULL;
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}
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static void memory_map_init(void)
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static void memory_map_init(void)
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{
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{
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system_memory = g_malloc(sizeof(*system_memory));
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system_memory = g_malloc(sizeof(*system_memory));
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@ -41,6 +41,7 @@ struct AddressSpaceDispatch {
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};
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};
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void address_space_init_dispatch(AddressSpace *as);
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void address_space_init_dispatch(AddressSpace *as);
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void address_space_destroy_dispatch(AddressSpace *as);
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ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
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ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
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MemoryRegion *mr);
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MemoryRegion *mr);
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18
memory.c
18
memory.c
@ -564,8 +564,10 @@ static FlatView generate_memory_topology(MemoryRegion *mr)
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flatview_init(&view);
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flatview_init(&view);
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render_memory_region(&view, mr, int128_zero(),
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if (mr) {
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addrrange_make(int128_zero(), int128_2_64()), false);
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render_memory_region(&view, mr, int128_zero(),
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addrrange_make(int128_zero(), int128_2_64()), false);
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}
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flatview_simplify(&view);
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flatview_simplify(&view);
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return view;
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return view;
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@ -1542,6 +1544,18 @@ void address_space_init(AddressSpace *as, MemoryRegion *root)
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address_space_init_dispatch(as);
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address_space_init_dispatch(as);
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}
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}
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void address_space_destroy(AddressSpace *as)
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{
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/* Flush out anything from MemoryListeners listening in on this */
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memory_region_transaction_begin();
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as->root = NULL;
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memory_region_transaction_commit();
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QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
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address_space_destroy_dispatch(as);
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flatview_destroy(as->current_map);
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g_free(as->current_map);
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}
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uint64_t io_mem_read(MemoryRegion *mr, target_phys_addr_t addr, unsigned size)
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uint64_t io_mem_read(MemoryRegion *mr, target_phys_addr_t addr, unsigned size)
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{
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{
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return memory_region_dispatch_read(mr, addr, size);
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return memory_region_dispatch_read(mr, addr, size);
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12
memory.h
12
memory.h
@ -804,6 +804,18 @@ void mtree_info(fprintf_function mon_printf, void *f);
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*/
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*/
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void address_space_init(AddressSpace *as, MemoryRegion *root);
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void address_space_init(AddressSpace *as, MemoryRegion *root);
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/**
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* address_space_destroy: destroy an address space
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*
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* Releases all resources associated with an address space. After an address space
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* is destroyed, its root memory region (given by address_space_init()) may be destroyed
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* as well.
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*
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* @as: address space to be destroyed
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*/
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void address_space_destroy(AddressSpace *as);
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/**
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/**
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* address_space_rw: read from or write to an address space.
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* address_space_rw: read from or write to an address space.
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*
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*
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