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(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
