Most of the work on the memory API focused on memory access targets - the memory regions and how they are composed into an address space. This patchset tackles the initator side of the question - how to originate accesses.
The AddressSpace object, is exported to users and becomes the representation of an initiator. Each address space describes the paths from some point in the system (a device or cpu) to the devices reachable from that initiator. As an example, the API is used to support PCI_COMMAND_MASTER bit. Avi Kivity (22): memory: rename 'exec-obsolete.h' vhost: use MemoryListener filtering to only monitor RAM address space kvm: use separate MemoryListeners for memory and I/O xen_pt: use separate MemoryListeners for memory and I/O memory: prepare AddressSpace for exporting memory: export AddressSpace memory: maintain a list of address spaces memory: provide defaults for MemoryListener operations memory: use new MEMORY_LISTENER_DEFAULT_OPS vfio: use new MEMORY_LISTENER_DEFAULT_OPS xen_pt: use new MEMORY_LISTENER_DEFAULT_OPS kvm: use new MEMORY_LISTENER_DEFAULT_OPS xen: use new MEMORY_LISTENER_DEFAULT_OPS memory: manage coalesced mmio via a MemoryListener memory: move address_space_memory and address_space_io out of memory core memory: move tcg flush into a tcg memory listener memory: use AddressSpace for MemoryListener filtering s390: avoid reaching into memory core internals memory: per-AddressSpace dispatch dma: make dma access its own address space pci: give each device its own address space pci: honor PCI_COMMAND_MASTER cputlb.c | 6 +- cputlb.h | 3 +- dma-helpers.c | 25 ++- dma.h | 17 +- exec-memory.h | 7 +- exec.c | 312 ++++++++++++++--------------------- hw/Makefile.objs | 5 +- hw/pci.c | 19 ++- hw/pci.h | 2 + hw/spapr_iommu.c | 3 +- hw/vfio_pci.c | 33 +--- hw/vhost.c | 5 +- hw/xen_pt.c | 49 +++--- hw/xen_pt.h | 1 + kvm-all.c | 107 +++++------- kvm-stub.c | 10 -- kvm.h | 2 - exec-obsolete.h => memory-internal.h | 30 +++- memory.c | 158 +++++++++++------- memory.h | 122 +++++++++++++- target-s390x/misc_helper.c | 2 +- xen-all.c | 45 +---- 22 files changed, 487 insertions(+), 476 deletions(-) rename exec-obsolete.h => memory-internal.h (87%) -- 1.7.12