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    Subject[v4 0/3] prerequisite changes for VT-d posted-interrupts
    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 implement some prerequisite parts for VT-d posted-interrupts. It was part of
    http://thread.gmane.org/gmane.linux.kernel.iommu/7708. To make things clear, I will divide
    the whole series which contain multiple components into three parts:
    - prerequisite changes (included in this series)
    - IOMMU part (v4 was reviewed, some comments need to be addressed)
    - KVM and VFIO parts (will send out this part once the first two parts are accepted)

    This series is rebased on the x86-apic branch of tip tree.

    Feng Wu (3):
    genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a
    VCPU
    x86, irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller
    x86, irq: Define a global vector for VT-d Posted-Interrupts

    arch/x86/include/asm/entry_arch.h | 2 ++
    arch/x86/include/asm/hardirq.h | 1 +
    arch/x86/include/asm/hw_irq.h | 2 ++
    arch/x86/include/asm/irq_vectors.h | 1 +
    arch/x86/kernel/apic/msi.c | 1 +
    arch/x86/kernel/entry_64.S | 2 ++
    arch/x86/kernel/irq.c | 27 +++++++++++++++++++++++++++
    arch/x86/kernel/irqinit.c | 2 ++
    include/linux/irq.h | 6 ++++++
    kernel/irq/chip.c | 14 ++++++++++++++
    kernel/irq/manage.c | 20 ++++++++++++++++++++
    11 files changed, 78 insertions(+)

    --
    2.1.0



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