+Coroutines
+M: Stefan Hajnoczi <stefanha@redhat.com>
+M: Kevin Wolf <kwolf@redhat.com>
+F: util/*coroutine*
+F: include/qemu/coroutine*
+F: tests/test-coroutine.c
+
+Buffers
+M: Daniel P. Berrange <berrange@redhat.com>
+S: Odd fixes
+F: util/buffer.c
+F: include/qemu/buffer.h
+
+I/O Channels
+M: Daniel P. Berrange <berrange@redhat.com>
+S: Maintained
+F: io/
+F: include/io/
+F: tests/test-io-*
+
+Sockets
+M: Daniel P. Berrange <berrange@redhat.com>
+M: Gerd Hoffmann <kraxel@redhat.com>
+M: Paolo Bonzini <pbonzini@redhat.com>
+S: Maintained
+F: include/qemu/sockets.h
+F: util/qemu-sockets.c
+
+Throttling infrastructure
+M: Alberto Garcia <berto@igalia.com>
+S: Supported
+F: block/throttle-groups.c
+F: include/block/throttle-groups.h
+F: include/qemu/throttle.h
+F: util/throttle.c
+L: qemu-block@nongnu.org
+