[Qemu-devel] [PATCH v1 00/23] Integrate DMA into the memory API

[Avi Kivity <avi@redhat.com>]

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.

Changes from v1:
 - fix typo on commit log for patch 7
 - add address space destruction (resolved FIXME)

Still unresolved:
 - use of structure literal non-extension
 - DEFAULT_OPS vs. if (listener->op) { listener->op(...); }

Two FIXMEs are introduced for the PCI bus master address space, however they're only
exposed by this patch set; the incorrect behaviour is preexisting.  They will be resolved
in a future patchset.

Avi Kivity (23):
  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
  memory: add address_space_destroy()
  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                               | 322 +++++++++++++++--------------------
 hw/Makefile.objs                     |   5 +-
 hw/pci.c                             |  25 ++-
 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 |  31 +++-
 memory.c                             | 172 ++++++++++++-------
 memory.h                             | 134 ++++++++++++++-
 target-s390x/misc_helper.c           |   3 +-
 xen-all.c                            |  45 +----
 22 files changed, 530 insertions(+), 477 deletions(-)
 rename exec-obsolete.h => memory-internal.h (86%)

-- 
1.7.12