[Qemu-devel] [PATCH v3 0/9] RCUification of the memory API, part 2

[Paolo Bonzini]

Part 2 converts ram_list to RCU.  It is enough of a base for Stefan's
work on thread-safe migration bitmaps.

Part 3 (not yet posted because it won't be in 2.3 anyway) will separate
removal and reclamation of device data.  Part 4 will switch KVM MMIO
and PIO to unlocked lookup and convert a single device to unlocked access.

Paolo

v1->v2: add comment in cpu_reload_memory_map [Fam]
        do not remove ram_list mutex [Fam]
        some improvements to test-rcu-list

v2->v3: use explicit memory barriers when accessing ram_list.version [Fam]
        clean up some comments [Fam]
        add more comments about required locks

Mike Day (4):
  rcu: introduce RCU-enabled QLIST
  cosmetic changes preparing for the following patches
  exec: convert ram_list to QLIST
  Convert ram_list to RCU

Paolo Bonzini (5):
  exec: introduce cpu_reload_memory_map
  exec: make iotlb RCU-friendly
  exec: RCUify AddressSpaceDispatch
  rcu: prod call_rcu thread when calling synchronize_rcu
  exec: protect mru_block with RCU

 arch_init.c                  |  73 +++++++----
 cpu-exec.c                   |  33 +++++
 cpus.c                       |   2 +-
 cputlb.c                     |  13 +-
 exec.c                       | 294 +++++++++++++++++++++++++++++------------
 hw/9pfs/virtio-9p-synth.c    |   2 +-
 hw/i386/intel_iommu.c        |   3 +
 hw/pci-host/apb.c            |   1 +
 hw/ppc/spapr_iommu.c         |   1 +
 include/exec/cpu-all.h       |  13 +-
 include/exec/cputlb.h        |   2 +-
 include/exec/exec-all.h      |   5 +-
 include/qemu/queue.h         |  11 --
 include/qemu/rcu_queue.h     | 134 +++++++++++++++++++
 include/qom/cpu.h            |   1 +
 scripts/dump-guest-memory.py |   8 +-
 softmmu_template.h           |   4 +-
 tests/Makefile               |   5 +-
 tests/test-rcu-list.c        | 306 +++++++++++++++++++++++++++++++++++++++++++
 util/rcu.c                   |   8 +-
 20 files changed, 775 insertions(+), 144 deletions(-)
 create mode 100644 include/qemu/rcu_queue.h
 create mode 100644 tests/test-rcu-list.c

-- 
1.8.3.1