(Applies to kvm.git b59cd3560111)
This series implements a mechanism called "irqfd". It lets you create
an eventfd based file-desriptor to inject interrupts to the guest. We
associate one gsi per fd for proper routing granularity.
We do not have a user of this interface in this series, though note
future version of virtual-bus (v4 and above) will be based on this.
The first two patches will require mainline buy-in, particularly from Davide
(cc'd). The last patch is kvm specific.
kvm-userspace.git patch to follow.
-Greg
---
Gregory Haskins (3):
kvm: add support for irqfd via eventfd-notification interface
eventfd: add a notifier mechanism
eventfd: export fget and signal interfaces for module use
arch/x86/kvm/Makefile | 2 -
arch/x86/kvm/x86.c | 1
fs/eventfd.c | 54 +++++++++++++++++++
include/linux/eventfd.h | 8 +++
include/linux/kvm.h | 7 ++
include/linux/kvm_host.h | 7 ++
virt/kvm/irqfd.c | 133 ++++++++++++++++++++++++++++++++++++++++++++++
virt/kvm/kvm_main.c | 12 ++++
8 files changed, 223 insertions(+), 1 deletions(-)
create mode 100644 virt/kvm/irqfd.c
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