[PATCHv3 0/4] kvm: locking and API rework for iosignalfd

[Michael S. Tsirkin]

This series switches kvm_io_device to slots_lock from kvm->lock mutex,
and uses that to rework io bus API. This takes less locks on data path,
and uses less lines of code. These changes will also be useful to serve
as basis for Greg's iosignalfd work.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---

I have split the patch and reworked along the lines suggested by Avi.
This works for me, but please review carefully.

Michael S. Tsirkin (4):
  kvm: document locking for kvm_io_device_ops
  kvm: switch coalesced mmio changes to slots_lock
  kvm: convert bus to slots_lock
  kvm: remove in_range from io devices

 arch/ia64/kvm/kvm-ia64.c  |   28 +++--------
 arch/x86/kvm/i8254.c      |   53 +++++++++++----------
 arch/x86/kvm/i8259.c      |   22 +++++----
 arch/x86/kvm/lapic.c      |   44 ++++++++----------
 arch/x86/kvm/x86.c        |  110 +++++++++++++--------------------------------
 include/linux/kvm_host.h  |    9 +++-
 virt/kvm/coalesced_mmio.c |   28 +++++------
 virt/kvm/ioapic.c         |   24 +++++-----
 virt/kvm/iodev.h          |   42 +++++++----------
 virt/kvm/kvm_main.c       |   31 ++++++++-----
 10 files changed, 171 insertions(+), 220 deletions(-)
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