RE: [v3 00/26] Add VT-d Posted-Interrupts support
From: Wu, Feng
Date: Mon Jan 05 2015 - 20:10:35 EST
Ping...
Hi Joerg & David,
Could you please have a look at the IOMMU part of this series (patch 02 - 04, patch 06 - 09 , patch 26)?
Hi Thomas, Ingo, & Peter,
Could you please have a look at this series, especially for patch 01, 05, 21?
Thanks,
Feng
> -----Original Message-----
> From: Wu, Feng
> Sent: Friday, December 12, 2014 11:15 PM
> To: tglx@xxxxxxxxxxxxx; mingo@xxxxxxxxxx; hpa@xxxxxxxxx; x86@xxxxxxxxxx;
> gleb@xxxxxxxxxx; pbonzini@xxxxxxxxxx; dwmw2@xxxxxxxxxxxxx;
> joro@xxxxxxxxxx; alex.williamson@xxxxxxxxxx; jiang.liu@xxxxxxxxxxxxxxx
> Cc: eric.auger@xxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; Wu, Feng
> Subject: [v3 00/26] Add VT-d Posted-Interrupts support
>
> 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-technolog
> y/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 <jiang.liu@xxxxxxxxxxxxxxx>
>
> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/