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Date: Fri, 18 Sep 2015 15:38:46 +0000 From: "Wu, Feng" <feng.wu@...el.com> To: Paolo Bonzini <pbonzini@...hat.com>, "alex.williamson@...hat.com" <alex.williamson@...hat.com>, "joro@...tes.org" <joro@...tes.org>, "mtosatti@...hat.com" <mtosatti@...hat.com> CC: "eric.auger@...aro.org" <eric.auger@...aro.org>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>, "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Wu, Feng" <feng.wu@...el.com> Subject: RE: [PATCH v9 00/18] Add VT-d Posted-Interrupts support - including prerequisite series > -----Original Message----- > From: Paolo Bonzini [mailto:pbonzini@...hat.com] > Sent: Friday, September 18, 2015 11:21 PM > To: Wu, Feng; alex.williamson@...hat.com; joro@...tes.org; > mtosatti@...hat.com > Cc: eric.auger@...aro.org; kvm@...r.kernel.org; > iommu@...ts.linux-foundation.org; linux-kernel@...r.kernel.org > Subject: Re: [PATCH v9 00/18] Add VT-d Posted-Interrupts support - including > prerequisite series > > > > On 18/09/2015 17:08, Wu, Feng wrote: > > > > > >> -----Original Message----- > >> From: Paolo Bonzini [mailto:pbonzini@...hat.com] > >> Sent: Friday, September 18, 2015 10:59 PM > >> To: Wu, Feng; alex.williamson@...hat.com; joro@...tes.org; > >> mtosatti@...hat.com > >> Cc: eric.auger@...aro.org; kvm@...r.kernel.org; > >> iommu@...ts.linux-foundation.org; linux-kernel@...r.kernel.org > >> Subject: Re: [PATCH v9 00/18] Add VT-d Posted-Interrupts support - including > >> prerequisite series > >> > >> > >> > >> On 18/09/2015 16:29, Feng Wu wrote: > >>> 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 > >> > >> Thanks. I will squash patches 2 and 14 together, and drop patch 3. > >> > >> Signed-off-bys are missing in patch 1 and 4. The patches exist > >> elsewhere in the mailing list archives, so not a big deal. Or just > >> reply to them with the S-o-b line. > >> > > > > Thanks for your quick response, Paolo! I didn't change the code > > in patch 1 and 4, do I need to add s-o-b, if needed, I can reply > > the patches. > > Yes, the s-o-b just means that the code passed through your hands. Done. > > Note that I replied to patch 17, but no need to resend that one > either---just mailing list discussion is enough. Do you mean you replied to patch 17 just now, but I don't find your replies in the mailing list. Thanks, Feng > > Paolo > > > Thanks, > > Feng > > > >> Alex, can you ack the series and review patch 12? > >> > >> Joerg, can you ack patch 18? > >> > >> Paolo > >> > >>> v9: > >>> - Include the whole series: > >>> [01/18]: irq bypasser manager > >>> [02/18] - [06/18]: Common non-architecture part for VT-d PI and ARM side > >> forwarded irq > >>> [07/18] - [18/18]: VT-d PI part > >>> > >>> v8: > >>> refer to the changelog in each patch > >>> > >>> v7: > >>> * Define two weak irq bypass callbacks: > >>> - kvm_arch_irq_bypass_start() > >>> - kvm_arch_irq_bypass_stop() > >>> * Remove the x86 dummy implementation of the above two functions. > >>> * Print some useful information instead of WARN_ON() when the > >>> irq bypass consumer unregistration fails. > >>> * Fix an issue when calling pi_pre_block and pi_post_block. > >>> > >>> v6: > >>> * Rebase on 4.2.0-rc6 > >>> * Rebase on https://lkml.org/lkml/2015/8/6/526 and > >> http://www.gossamer-threads.com/lists/linux/kernel/2235623 > >>> * Make the add_consumer and del_consumer callbacks static > >>> * Remove pointless INIT_LIST_HEAD to 'vdev->ctx[vector].producer.node)' > >>> * Use dev_info instead of WARN_ON() when irq_bypass_register_producer > >> fails > >>> * Remove optional dummy callbacks for irq producer > >>> > >>> v4: > >>> * For lowest-priority interrupt, only support single-CPU destination > >>> interrupts at the current stage, more common lowest priority support > >>> will be added later. > >>> * Accoring to Marcelo's suggestion, when vCPU is blocked, we handle > >>> the posted-interrupts in the HLT emulation path. > >>> * Some small changes (coding style, typo, add some code comments) > >>> > >>> 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 > >>> > >>> 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@...ux.intel.com> > >>> > >>> > >>> *** BLURB HERE *** > >>> > >>> Alex Williamson (1): > >>> virt: IRQ bypass manager > >>> > >>> Eric Auger (4): > >>> KVM: arm/arm64: select IRQ_BYPASS_MANAGER > >>> KVM: create kvm_irqfd.h > >>> KVM: introduce kvm_arch functions for IRQ bypass > >>> KVM: eventfd: add irq bypass consumer management > >>> > >>> Feng Wu (13): > >>> KVM: x86: select IRQ_BYPASS_MANAGER > >>> KVM: Extend struct pi_desc for VT-d Posted-Interrupts > >>> KVM: Add some helper functions for Posted-Interrupts > >>> KVM: Define a new interface kvm_intr_is_single_vcpu() > >>> KVM: Make struct kvm_irq_routing_table accessible > >>> KVM: make kvm_set_msi_irq() public > >>> vfio: Register/unregister irq_bypass_producer > >>> KVM: x86: Update IRTE for posted-interrupts > >>> KVM: Implement IRQ bypass consumer callbacks for x86 > >>> KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd' > >>> KVM: Update Posted-Interrupts Descriptor when vCPU is preempted > >>> KVM: Update Posted-Interrupts Descriptor when vCPU is blocked > >>> iommu/vt-d: Add a command line parameter for VT-d posted-interrupts > >>> > >>> Documentation/kernel-parameters.txt | 1 + > >>> Documentation/virtual/kvm/locking.txt | 12 ++ > >>> MAINTAINERS | 7 + > >>> arch/arm/kvm/Kconfig | 2 + > >>> arch/arm/kvm/Makefile | 1 + > >>> arch/arm64/kvm/Kconfig | 2 + > >>> arch/arm64/kvm/Makefile | 1 + > >>> arch/x86/include/asm/kvm_host.h | 24 +++ > >>> arch/x86/kvm/Kconfig | 3 + > >>> arch/x86/kvm/Makefile | 3 + > >>> arch/x86/kvm/irq_comm.c | 32 ++- > >>> arch/x86/kvm/lapic.c | 59 ++++++ > >>> arch/x86/kvm/lapic.h | 2 + > >>> arch/x86/kvm/trace.h | 33 ++++ > >>> arch/x86/kvm/vmx.c | 361 > >> +++++++++++++++++++++++++++++++++- > >>> arch/x86/kvm/x86.c | 108 +++++++++- > >>> drivers/iommu/irq_remapping.c | 12 +- > >>> drivers/vfio/pci/Kconfig | 1 + > >>> drivers/vfio/pci/vfio_pci_intrs.c | 9 + > >>> drivers/vfio/pci/vfio_pci_private.h | 2 + > >>> include/linux/irqbypass.h | 90 +++++++++ > >>> include/linux/kvm_host.h | 29 +++ > >>> include/linux/kvm_irqfd.h | 71 +++++++ > >>> virt/kvm/Kconfig | 3 + > >>> virt/kvm/eventfd.c | 142 +++++++------ > >>> virt/kvm/irqchip.c | 10 - > >>> virt/kvm/kvm_main.c | 3 + > >>> virt/lib/Kconfig | 2 + > >>> virt/lib/Makefile | 1 + > >>> virt/lib/irqbypass.c | 257 > >> ++++++++++++++++++++++++ > >>> 30 files changed, 1182 insertions(+), 101 deletions(-) > >>> create mode 100644 include/linux/irqbypass.h > >>> create mode 100644 include/linux/kvm_irqfd.h > >>> create mode 100644 virt/lib/Kconfig > >>> create mode 100644 virt/lib/Makefile > >>> create mode 100644 virt/lib/irqbypass.c > >>> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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