Messages in this thread | | | From | Feng Wu <> | Subject | [v4 0/3] prerequisite changes for VT-d posted-interrupts | Date | Thu, 30 Apr 2015 15:06:45 +0800 |
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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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