lkml.org 
[lkml]   [2015]   [May]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[v7 0/4] 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.

    v6 --> v7:
    [1/4]:
    - Add a KernelDoc comment for function irq_set_vcpu_affinity().

    v5 --> v6:
    [3/4]:
    - Avoid the conditional in the exception handler smp_kvm_posted_intr_wakeup_ipi().
    - Rename "wakeup_handler_callback" to "kvm_posted_intr_wakeup_handler".

    [4/4]
    - Newly added in this series, show the statistics information for posted-interrupts.


    v4 --> v5:
    - Move the declaration of "irq_chip_set_vcpu_affinity_parent()" to [1/3].
    - Use the accessor to get "struct irq_data", "struct irq_chip".
    - Use "irq_get_desc_lock()" instead of "irq_to_desc()".
    - Declare "wakeup_handler_callback" in "asm/irq.h".
    - Use entering_ack_irq()/exiting_irq() in smp_kvm_posted_intr_wakeup_ipi().


    Feng Wu (3):
    x86/irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller
    x86/irq: Define a global vector for VT-d Posted-Interrupts
    x86/irq: Show statistics information for posted-interrupts

    Jiang Liu (1):
    genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a
    VCPU

    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.h | 4 ++++
    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 | 43 ++++++++++++++++++++++++++++++++++++++
    arch/x86/kernel/irqinit.c | 2 ++
    include/linux/irq.h | 6 ++++++
    kernel/irq/chip.c | 14 +++++++++++++
    kernel/irq/manage.c | 31 +++++++++++++++++++++++++++
    12 files changed, 109 insertions(+)

    --
    2.1.0



    \
     
     \ /
      Last update: 2015-05-19 11:41    [W:3.546 / U:0.076 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site