Commit 1d8280c1 authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Michael S. Tsirkin
Browse files

memory: make memory_listener_unregister idempotent 



Make it easy to unregister a MemoryListener without tracking whether it
had been registered before.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 79c0f397

memory.c

+5 −0
Original line number Diff line number Diff line
@@ -2371,8 +2371,13 @@ void memory_listener_register(MemoryListener *listener, AddressSpace *as) 


void memory_listener_unregister(MemoryListener *listener)

{

    if (!listener->address_space) {

        return;

    }



    QTAILQ_REMOVE(&memory_listeners, listener, link);

    QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as);

    listener->address_space = NULL;

}



void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)