[PATCH v5 0/4] kvm: level irqfd and new eoifd

From: Alex Williamson
Date: Mon Jul 16 2012 - 16:33:48 EST

- irqfds now have a one-to-one mapping with eoifds to prevent users
from consuming all of kernel memory by repeatedly creating eoifds
from a single irqfd.
- implement a kvm_clear_irq() which does a test_and_clear_bit of
the irq_state, only updating the pic/ioapic if changes and allowing
the caller to know if anything was done. I added this onto the end
as it's essentially an optimization on the previous design. It's
hard to tell if there's an actual performance benefit to this.
- dropped eoifd gsi support patch as it was only an FYI.




Alex Williamson (4):
kvm: Convert eoifd to use kvm_clear_irq
kvm: Create kvm_clear_irq()
kvm: KVM_EOIFD, an eventfd for EOIs
kvm: Extend irqfd to support level interrupts

Documentation/virtual/kvm/api.txt | 28 +++
arch/x86/kvm/x86.c | 3
include/linux/kvm.h | 18 ++
include/linux/kvm_host.h | 16 ++
virt/kvm/eventfd.c | 333 +++++++++++++++++++++++++++++++++++++
virt/kvm/irq_comm.c | 78 +++++++++
virt/kvm/kvm_main.c | 11 +
7 files changed, 483 insertions(+), 4 deletions(-)
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