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Subject[v5 00/19] Add VT-d Posted-Interrupts support
Date
VT-d Posted-Interrupts is an enhancement to CPU side Posted-Interrupt.
With VT-d Posted-Interrupts enabled, external interrupts from
direct-assigned devices can be delivered to guests without VMM
intervention when guest is running in non-root mode.

You can find the VT-d Posted-Interrtups Spec. in the following URL:
http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/vt-directed-io-spec.html

This series was part of http://thread.gmane.org/gmane.linux.kernel.iommu/7708. To make things clear, send out IOMMU part here.

This patch-set is based on the lastest x86/apic branch of tip tree.

Divide the whole series which contain multiple components into three parts:
- Prerequisite changes to irq subsystem (already merged)
- IOMMU part (already merged)
- KVM and VFIO parts (this series)

v5:
- Based on Alex and Eric's irq bypass manager:
https://lkml.org/lkml/2015/7/10/663
- Reuse some common patch from Eric

Eric Auger (3):
KVM: create kvm_irqfd.h
KVM: eventfd: add irq bypass information in irqfd
KVM: eventfd: add irq bypass consumer management

Feng Wu (16):
KVM: Extend struct pi_desc for VT-d Posted-Interrupts
KVM: Add some helper functions for Posted-Interrupts
KVM: Define a new interface kvm_intr_is_single_vcpu()
KVM: Get Posted-Interrupts descriptor address from struct kvm_vcpu
KVM: Add interfaces to control PI outside vmx
KVM: Make struct kvm_irq_routing_table accessible
KVM: make kvm_set_msi_irq() public
vfio: Select IRQ_BYPASS_MANAGER for vfio PCI devices
vfio: Register/unregister irq_bypass_producer
KVM, x86: Select IRQ_BYPASS_MANAGER for KVM_INTEL
KVM: x86: Update IRTE for posted-interrupts
KVM: x86: Add arch specific routines for irqbypass manager
KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'
KVM: Update Posted-Interrupts Descriptor when vCPU is preempted
KVM: Update Posted-Interrupts Descriptor when vCPU is blocked
KVM: Warn if 'SN' is set during posting interrupts by software

arch/x86/include/asm/kvm_host.h | 15 ++
arch/x86/kvm/Kconfig | 1 +
arch/x86/kvm/irq_comm.c | 28 +++-
arch/x86/kvm/vmx.c | 278 +++++++++++++++++++++++++++++++++++-
arch/x86/kvm/x86.c | 160 +++++++++++++++++++--
drivers/vfio/pci/Kconfig | 1 +
drivers/vfio/pci/vfio_pci_intrs.c | 19 +++
drivers/vfio/pci/vfio_pci_private.h | 2 +
include/linux/kvm_host.h | 23 +++
include/linux/kvm_irqfd.h | 74 ++++++++++
virt/kvm/eventfd.c | 115 ++++++---------
virt/kvm/irqchip.c | 11 --
virt/kvm/kvm_main.c | 3 +
13 files changed, 632 insertions(+), 98 deletions(-)
create mode 100644 include/linux/kvm_irqfd.h

--
2.1.0



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