From: "Wu, Feng" <feng.wu@intel.com>
To: "tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"hpa@zytor.com" <hpa@zytor.com>,
"x86@kernel.org" <x86@kernel.org>,
"gleb@kernel.org" <gleb@kernel.org>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
"joro@8bytes.org" <joro@8bytes.org>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"jiang.liu@linux.intel.com" <jiang.liu@linux.intel.com>
Cc: "eric.auger@linaro.org" <eric.auger@linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"Wu, Feng" <feng.wu@intel.com>
Subject: RE: [v3 00/26] Add VT-d Posted-Interrupts support
Date: Wed, 28 Jan 2015 03:01:03 +0000 [thread overview]
Message-ID: <E959C4978C3B6342920538CF579893F0023826A5@SHSMSX104.ccr.corp.intel.com> (raw)
In-Reply-To: <E959C4978C3B6342920538CF579893F00236670C@SHSMSX104.ccr.corp.intel.com>
> -----Original Message-----
> From: Wu, Feng
> Sent: Wednesday, January 21, 2015 10:26 AM
> 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; Wu, Feng
> Subject: RE: [v3 00/26] Add VT-d Posted-Interrupts support
>
>
> > -----Original Message-----
> > From: Wu, Feng
> > Sent: Friday, December 12, 2014 11:15 PM
> > 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; 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@linux.intel.com>
> >
> > 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
> >
>
> Hi Paolo, Alex, and other maintainers,
>
> Since this series contain multiple subsystems, IOMMU, irq, x86, VFIO, KVM, etc.
> I am wondering how you guys handled this case before? If all the patches are
> reviewed and acked by the associated maintainer, are you only merge the
> patches
> related to your own subsystem to your tree? However, you may also need get
> other
> patches to make the build successful, so I am a little curious about how you guys
> handle this? Thanks a lot!
Can anyone share some experiences about this?
Thanks,
Feng
>
> Thanks,
> Feng
>
> > --
> > 1.9.1
next prev parent reply other threads:[~2015-01-28 3:01 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-12 15:14 [v3 00/26] Add VT-d Posted-Interrupts support Feng Wu
2014-12-12 15:14 ` [v3 01/26] genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a VCPU Feng Wu
2014-12-12 15:14 ` [v3 02/26] iommu: Add new member capability to struct irq_remap_ops Feng Wu
2015-01-28 15:22 ` David Woodhouse
2015-01-29 8:34 ` Wu, Feng
2014-12-12 15:14 ` [v3 03/26] iommu, x86: Define new irte structure for VT-d Posted-Interrupts Feng Wu
2015-01-28 15:26 ` David Woodhouse
2014-12-12 15:14 ` [v3 04/26] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip Feng Wu
2015-01-28 15:26 ` David Woodhouse
2015-01-29 7:55 ` Wu, Feng
2014-12-12 15:14 ` [v3 05/26] x86, irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller Feng Wu
2014-12-12 15:14 ` [v3 06/26] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts Feng Wu
2014-12-18 14:26 ` Zhang, Yang Z
2014-12-19 1:40 ` Wu, Feng
2014-12-19 1:46 ` Zhang, Yang Z
2014-12-19 11:59 ` Paolo Bonzini
2014-12-23 0:37 ` Zhang, Yang Z
2014-12-23 8:47 ` Paolo Bonzini
2014-12-23 9:07 ` Wu, Feng
2014-12-23 9:34 ` Paolo Bonzini
2014-12-24 1:38 ` Zhang, Yang Z
2014-12-24 2:12 ` Jiang Liu
2014-12-24 2:32 ` Zhang, Yang Z
2014-12-24 3:08 ` Wu, Feng
2014-12-24 4:04 ` Zhang, Yang Z
2014-12-24 4:54 ` Jiang Liu
2015-01-28 15:29 ` David Woodhouse
2014-12-12 15:14 ` [v3 07/26] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Feng Wu
2015-01-28 15:32 ` David Woodhouse
2014-12-12 15:14 ` [v3 08/26] iommu, x86: Add intel_irq_remapping_capability() for Intel Feng Wu
2015-01-28 15:37 ` David Woodhouse
2015-01-29 8:57 ` Wu, Feng
2014-12-12 15:14 ` [v3 09/26] iommu, x86: define irq_remapping_cap() Feng Wu
2014-12-12 15:14 ` [v3 10/26] KVM: change struct pi_desc for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` [v3 11/26] KVM: Add some helper functions for Posted-Interrupts Feng Wu
2014-12-12 15:14 ` [v3 12/26] KVM: Initialize VT-d Posted-Interrupts Descriptor Feng Wu
2014-12-18 15:19 ` Zhang, Yang Z
2014-12-12 15:14 ` [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI Feng Wu
2014-12-18 14:49 ` Zhang, Yang Z
2014-12-18 16:58 ` Paolo Bonzini
2014-12-19 1:13 ` Zhang, Yang Z
2014-12-19 1:30 ` Wu, Feng
2014-12-19 1:30 ` Wu, Feng
2014-12-19 1:47 ` Zhang, Yang Z
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 23:48 ` Wu, Feng
2014-12-20 13:16 ` Paolo Bonzini
2014-12-22 4:48 ` Wu, Feng
2014-12-22 9:27 ` Paolo Bonzini
2014-12-22 11:04 ` Wu, Feng
2014-12-22 11:06 ` Paolo Bonzini
2014-12-22 11:17 ` Wu, Feng
2014-12-22 11:23 ` Paolo Bonzini
2014-12-22 14:13 ` Yong Wang
2015-01-09 14:54 ` Radim Krčmář
2015-01-09 14:56 ` Paolo Bonzini
2015-01-09 15:12 ` Radim Krčmář
2015-01-09 15:18 ` Paolo Bonzini
2015-01-09 15:47 ` Radim Krčmář
2015-01-13 0:27 ` Wu, Feng
2015-01-13 16:17 ` Radim Kr?má?
2015-01-14 1:27 ` Wu, Feng
2015-01-14 13:02 ` Paolo Bonzini
2015-01-14 16:59 ` Radim Kr?má?
2015-01-20 21:04 ` Nadav Amit
2015-01-21 21:16 ` Radim Kr?má?
2014-12-12 15:14 ` [v3 14/26] KVM: Get Posted-Interrupts descriptor address from struct kvm_vcpu Feng Wu
2014-12-12 15:14 ` [v3 15/26] KVM: add interfaces to control PI outside vmx Feng Wu
2014-12-12 15:14 ` [v3 16/26] KVM: Make struct kvm_irq_routing_table accessible Feng Wu
2014-12-17 16:17 ` Paolo Bonzini
2014-12-19 2:19 ` Wu, Feng
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 23:39 ` Wu, Feng
2014-12-12 15:14 ` [v3 17/26] KVM: make kvm_set_msi_irq() public Feng Wu
2014-12-17 17:32 ` Paolo Bonzini
2014-12-12 15:14 ` [v3 18/26] KVM: kvm-vfio: User API for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` [v3 19/26] KVM: kvm-vfio: implement the VFIO skeleton " Feng Wu
2014-12-12 15:14 ` [v3 20/26] KVM: x86: kvm-vfio: VT-d posted-interrupts setup Feng Wu
2014-12-12 15:14 ` [v3 21/26] x86, irq: Define a global vector for VT-d Posted-Interrupts Feng Wu
2014-12-18 14:54 ` Zhang, Yang Z
2014-12-19 0:52 ` Wu, Feng
2015-01-30 18:18 ` H. Peter Anvin
2015-02-02 1:06 ` Wu, Feng
2015-02-23 22:04 ` Marcelo Tosatti
2014-12-12 15:14 ` [v3 22/26] KVM: Define a wakeup worker thread for vCPU Feng Wu
2014-12-12 15:14 ` [v3 23/26] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted Feng Wu
2014-12-17 17:11 ` Paolo Bonzini
2014-12-18 3:15 ` Wu, Feng
2014-12-18 8:32 ` Paolo Bonzini
2014-12-19 2:09 ` Wu, Feng
2015-02-23 22:21 ` Marcelo Tosatti
2015-03-02 9:12 ` Wu, Feng
2014-12-12 15:14 ` [v3 24/26] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked Feng Wu
2014-12-17 17:09 ` Paolo Bonzini
2014-12-18 3:16 ` Wu, Feng
2014-12-18 8:37 ` Paolo Bonzini
2014-12-19 2:51 ` Wu, Feng
2015-02-25 21:50 ` Marcelo Tosatti
2015-02-26 8:08 ` Wu, Feng
2015-02-26 23:41 ` Marcelo Tosatti
2015-02-26 23:40 ` Marcelo Tosatti
2015-03-02 13:36 ` Wu, Feng
2015-03-04 12:06 ` Marcelo Tosatti
2015-03-06 6:51 ` Wu, Feng
2015-03-12 1:15 ` Marcelo Tosatti
2015-03-16 11:42 ` Wu, Feng
2015-03-25 23:17 ` Marcelo Tosatti
2015-03-27 6:34 ` Wu, Feng
2015-03-27 19:30 ` Marcelo Tosatti
2015-03-30 4:46 ` Wu, Feng
2015-03-30 23:55 ` Marcelo Tosatti
2015-03-31 1:13 ` Wu, Feng
2015-04-14 7:37 ` Wu, Feng
2015-06-05 21:59 ` Marcelo Tosatti
2015-06-08 1:43 ` Wu, Feng
2014-12-12 15:14 ` [v3 25/26] KVM: Suppress posted-interrupt when 'SN' is set Feng Wu
2014-12-17 17:42 ` Paolo Bonzini
2014-12-18 3:14 ` Wu, Feng
2014-12-18 8:38 ` Paolo Bonzini
2014-12-18 15:09 ` Zhang, Yang Z
2014-12-19 2:58 ` Wu, Feng
2014-12-19 3:32 ` Zhang, Yang Z
2014-12-19 4:34 ` Wu, Feng
2014-12-19 4:44 ` Zhang, Yang Z
2014-12-19 4:49 ` Wu, Feng
2014-12-19 5:25 ` Zhang, Yang Z
2014-12-19 5:46 ` Wu, Feng
2014-12-19 7:04 ` Zhang, Yang Z
2014-12-19 12:00 ` Paolo Bonzini
2014-12-19 23:34 ` Wu, Feng
2014-12-12 15:15 ` [v3 26/26] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Feng Wu
2015-01-28 15:39 ` David Woodhouse
2014-12-16 9:04 ` [v3 00/26] Add VT-d Posted-Interrupts support Wu, Feng
2015-01-06 1:10 ` Wu, Feng
2015-01-09 12:46 ` joro
2015-01-09 13:58 ` Wu, Feng
2015-01-21 2:25 ` Wu, Feng
2015-01-28 3:01 ` Wu, Feng [this message]
2015-01-28 3:44 ` Alex Williamson
2015-01-28 4:44 ` Wu, Feng
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