Re: [Qemu-devel] [PATCH v2 00/23] Memory API, batch 1

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On 07/26/2011 06:25 AM, Avi Kivity wrote:
This patchset contains the core of the memory API, with one device
(usb-ohci) coverted for reference.  The API is currently implemented on
top of the old ram_addr_t/cpu_register_physical_memory() API, but the plan
is to make it standalone later.

The goals of the API are:
  - correctness: by modelling the memory hierarchy, things like the 440FX PAM
    registers and movable, overlapping PCI BARs can be modelled accurately.
  - efficiency: by maintaining an object tree describing guest memory, we
    can eventually get rid of the page descriptor array
  - security: by having more information available declaratively, we reduce
    coding errors that may be exploited by malicious guests

Applied all.  Thanks.

Regards,

Anthony Liguori


Also available from

   git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git
      refs/tags/memory-region-batch-1-v2

Changes from v1:
  - switched to gtk-doc
  - more copyright blurbs
  - simplified flatview_simplify()
  - use assert() instead of abort() for invariant checks
    (but keep abort() for runtime errors)
  - commit log fixups

Avi Kivity (23):
   Add memory API documentation
   Hierarchical memory region API
   memory: implement dirty tracking
   memory: merge adjacent segments of a single memory region
   Internal interfaces for memory API
   memory: abstract address space operations
   memory: rename MemoryRegion::has_ram_addr to ::terminates
   memory: late initialization of ram_addr
   memory: I/O address space support
   memory: add backward compatibility for old portio registration
   memory: add backward compatibility for old mmio registration
   memory: add ioeventfd support
   memory: separate building the final memory map into two steps
   memory: transaction API
   exec.c: initialize memory map
   ioport: register ranges by byte aligned addresses always
   pc: grab system_memory
   pc: convert pc_memory_init() to memory API
   pc: move global memory map out of pc_init1() and into its callers
   pci: pass address space to pci bus when created
   pci: add MemoryRegion based BAR management API
   sysbus: add MemoryRegion based memory management API
   usb-ohci: convert to MemoryRegion

  Makefile.target    |    1 +
  docs/memory.txt    |  172 ++++++++
  exec-memory.h      |   39 ++
  exec.c             |   19 +
  hw/apb_pci.c       |    2 +
  hw/bonito.c        |    4 +-
  hw/grackle_pci.c   |    5 +-
  hw/gt64xxx.c       |    4 +-
  hw/pc.c            |   62 ++-
  hw/pc.h            |    9 +-
  hw/pc_piix.c       |   20 +-
  hw/pci.c           |   63 +++-
  hw/pci.h           |   15 +-
  hw/pci_host.h      |    1 +
  hw/pci_internals.h |    1 +
  hw/piix_pci.c      |   13 +-
  hw/ppc4xx_pci.c    |    5 +-
  hw/ppc_mac.h       |    9 +-
  hw/ppc_newworld.c  |    5 +-
  hw/ppc_oldworld.c  |    3 +-
  hw/ppc_prep.c      |    3 +-
  hw/ppce500_pci.c   |    6 +-
  hw/prep_pci.c      |    5 +-
  hw/prep_pci.h      |    3 +-
  hw/sh_pci.c        |    4 +-
  hw/sysbus.c        |   27 ++-
  hw/sysbus.h        |    3 +
  hw/unin_pci.c      |   10 +-
  hw/usb-ohci.c      |   42 +--
  hw/versatile_pci.c |    2 +
  ioport.c           |    4 +-
  memory.c           | 1141 ++++++++++++++++++++++++++++++++++++++++++++++++++++
  memory.h           |  469 +++++++++++++++++++++
  33 files changed, 2072 insertions(+), 99 deletions(-)
  create mode 100644 docs/memory.txt
  create mode 100644 exec-memory.h
  create mode 100644 memory.c
  create mode 100644 memory.h


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