From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934877AbaLLPY4 (ORCPT ); Fri, 12 Dec 2014 10:24:56 -0500 Received: from mga02.intel.com ([134.134.136.20]:21486 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750704AbaLLPYz (ORCPT ); Fri, 12 Dec 2014 10:24:55 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,564,1413270000"; d="scan'208";a="622807091" From: Feng Wu To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, gleb@kernel.org, pbonzini@redhat.com, dwmw2@infradead.org, joro@8bytes.org, alex.williamson@redhat.com, jiang.liu@linux.intel.com Cc: eric.auger@linaro.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, Feng Wu Subject: [v3 00/26] Add VT-d Posted-Interrupts support Date: Fri, 12 Dec 2014 23:14:34 +0800 Message-Id: <1418397300-10870-1-git-send-email-feng.wu@intel.com> X-Mailer: git-send-email 1.7.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 v1->v2: * Use VFIO framework to enable this feature, the VFIO part of this series is base on Eric's patch "[PATCH v3 0/8] KVM-VFIO IRQ forward control" * Rebase this patchset on git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git, then revise some irq logic based on the new hierarchy irqdomain patches provided by Jiang Liu v2->v3: * Adjust the Posted-interrupts Descriptor updating logic when vCPU is preempted or blocked. * KVM_DEV_VFIO_DEVICE_POSTING_IRQ --> KVM_DEV_VFIO_DEVICE_POST_IRQ * __KVM_HAVE_ARCH_KVM_VFIO_POSTING --> __KVM_HAVE_ARCH_KVM_VFIO_POST * Add KVM_DEV_VFIO_DEVICE_UNPOST_IRQ attribute for VFIO irq, which can be used to change back to remapping mode. * Fix typo This patch series is made of the following groups: 1-6: Some preparation changes in iommu and irq component, this is based on the new hierarchy irqdomain logic. 7-9, 26: IOMMU changes for VT-d Posted-Interrupts, such as, feature detection, command line parameter. 10-17, 22-25: Changes related to KVM itself. 18-20: Changes in VFIO component, this part was previously sent out as "[RFC PATCH v2 0/2] kvm-vfio: implement the vfio skeleton for VT-d Posted-Interrupts" 21: x86 irq related changes Feng Wu (26): genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a VCPU iommu: Add new member capability to struct irq_remap_ops iommu, x86: Define new irte structure for VT-d Posted-Interrupts iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip x86, irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller iommu, x86: No need to migrating irq for VT-d Posted-Interrupts iommu, x86: Add cap_pi_support() to detect VT-d PI capability iommu, x86: Add intel_irq_remapping_capability() for Intel iommu, x86: define irq_remapping_cap() KVM: change struct pi_desc for VT-d Posted-Interrupts KVM: Add some helper functions for Posted-Interrupts KVM: Initialize VT-d Posted-Interrupts Descriptor KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI 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 KVM: kvm-vfio: User API for VT-d Posted-Interrupts KVM: kvm-vfio: implement the VFIO skeleton for VT-d Posted-Interrupts KVM: x86: kvm-vfio: VT-d posted-interrupts setup x86, irq: Define a global vector for VT-d Posted-Interrupts KVM: Define a wakeup worker thread for vCPU KVM: Update Posted-Interrupts Descriptor when vCPU is preempted KVM: Update Posted-Interrupts Descriptor when vCPU is blocked KVM: Suppress posted-interrupt when 'SN' is set iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Documentation/kernel-parameters.txt | 1 + Documentation/virtual/kvm/devices/vfio.txt | 9 ++ 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_remapping.h | 11 ++ arch/x86/include/asm/irq_vectors.h | 1 + arch/x86/include/asm/kvm_host.h | 12 ++ 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 + arch/x86/kvm/Makefile | 2 +- arch/x86/kvm/kvm_vfio_x86.c | 77 +++++++++ arch/x86/kvm/vmx.c | 244 ++++++++++++++++++++++++++++- arch/x86/kvm/x86.c | 22 ++- drivers/iommu/intel_irq_remapping.c | 68 +++++++- drivers/iommu/irq_remapping.c | 24 ++- drivers/iommu/irq_remapping.h | 8 + include/linux/dmar.h | 32 ++++ include/linux/intel-iommu.h | 1 + include/linux/irq.h | 7 + include/linux/kvm_host.h | 46 ++++++ include/uapi/linux/kvm.h | 11 ++ kernel/irq/chip.c | 14 ++ kernel/irq/manage.c | 20 +++ virt/kvm/irq_comm.c | 43 ++++- virt/kvm/irqchip.c | 11 -- virt/kvm/kvm_main.c | 15 ++ virt/kvm/vfio.c | 107 +++++++++++++ 30 files changed, 795 insertions(+), 28 deletions(-) create mode 100644 arch/x86/kvm/kvm_vfio_x86.c -- 1.9.1