Hi, another week, another rework of the new-VGIC series. Mostly minor changes this time, some moving and streamlining of patches (move prototypes to the same patch as the definition etc.) The most prominent change though is the rework of the GICv2 CPU interface access functionality. It turns out that this was not properly wired, so now we treat is very similar to the distributor registers and declare the registers in our register structure. Find a summary changelog below and more details in the respective patches. As this new VGIC emulation will probably become the default very shortly, please test it full steam on whatever setup you have access to. Any reports are warmly welcome. This series is still based on v4.6-rc5 as the previous version, though a test rebase to -rc6 didn't trigger any issues. A git tree containing this series can be found on linux-arm.org: git://linux-arm.org/linux-ap.git branch: vgic-new/v3 http://www.linux-arm.org/git?p=linux-ap.git;a=log;h=refs/heads/vgic-new/v3 Cheers, Andre. Changelog v2 .. v3: - arch_timer: remove bogus validity check from kvm_vgic_unmap_phys_irq() - arch_timer: simplify return in kvm_timer_vcpu_reset() - move some code between patches to fix rebase artifacts - add patch 12/55 to move some definitions into arm-vgic-v3.h - replace inclusions of vgic/vgic.h with arm_vgic.h - rename v3 redist register description variables to _rdbase_ and _sgibase_ - don't export VMCR accessor wrappers - rework CPU i/f access from userland, moving code into vgic-mmio-v2.c - make ich_vtr_el2 variable local =========================== This series is a joint effort to re-implement KVM's GIC emulation. While the current implementation is centered around providing efficient MMIO emulation, the hot path for most guests is actually the guest entry and exit, which currently is rather costly. Also the existing emulation has a global distributor lock, which quickly becomes a bottleneck once the number of VCPUs increases. Additionally the emulation was originally designed for GICv2, adding GICv3 ITS emulation support to this proved to be rather painful. Last, but not least the existing code became less and less maintainable, with many special cases handled explicitly. The new implementation is build around a struct vgic_irq data structure, which holds all information about a virtual interrupt. Interruts which should be injected are held in a per-VCPU list, this make the entry/exit path much more efficient. Also the new structure allows to have more fine grained locking - per IRQ and per VCPU - getting rid of the global distributor lock. As a result of the new design ITS emulation fits in more nicely, the respective code will be provided as a follow-up series. This series implements the same feature set as the existing emulation, as a goodie we now implement priorities correctly. To allow an easy transition with good test coverage, but still maintain stability, both implementations live side by side, selectable via a Kconfig option. The default is the new implementation. If this code proves to be reliable, we will later remove the current implementation with an extra patch set. Please have a look at the series, review it and give the code some serious testing (and possibly debugging). All feedback is appreciated. Cheers, Andre. Andre Przywara (29): KVM: arm/arm64: vgic: streamline vgic_update_irq_pending() interface KVM: arm/arm64: vgic: avoid map in kvm_vgic_inject_mapped_irq() KVM: arm/arm64: vgic: avoid map in kvm_vgic_map_is_active() KVM: arm/arm64: vgic: avoid map in kvm_vgic_unmap_phys_irq() KVM: arm/arm64: arch_timer: Remove irq_phys_map KVM: arm/arm64: vgic: Remove irq_phys_map from interface KVM: arm/arm64: pmu: abstract access to number of SPIs KVM: arm/arm64: move GICv2 emulation defines into arm-gic-v3.h KVM: arm/arm64: vgic-new: Add GICv2 MMIO handling framework KVM: arm/arm64: vgic-new: Add ENABLE registers handlers KVM: arm/arm64: vgic-new: Add PENDING registers handlers KVM: arm/arm64: vgic-new: Add ACTIVE registers handlers KVM: arm/arm64: vgic-new: Add PRIORITY registers handlers KVM: arm/arm64: vgic-new: Add CONFIG registers handlers KVM: arm/arm64: vgic-new: Add TARGET registers handlers KVM: arm/arm64: vgic-new: Add SGIR register handler KVM: arm/arm64: vgic-new: Add SGIPENDR register handlers KVM: arm/arm64: vgic-new: Add GICv3 MMIO handling framework KVM: arm/arm64: vgic-new: Add GICv3 CTLR, IIDR, TYPER handlers KVM: arm/arm64: vgic-new: Add GICv3 redistributor IIDR and TYPER handler KVM: arm/arm64: vgic-new: Add GICv3 IDREGS register handler KVM: arm/arm64: vgic-new: Add GICv3 IROUTER register handlers KVM: arm/arm64: vgic-new: Add GICv3 SGI system register trap handler KVM: arm/arm64: vgic-new: Add userland access to VGIC dist registers KVM: arm/arm64: vgic-new: Add GICH_VMCR accessors KVM: arm/arm64: vgic-new: Add userland GIC CPU interface access KVM: arm/arm64: vgic-new: Wire up irqfd injection KVM: arm/arm64: vgic-new: implement mapped IRQ handling KVM: arm/arm64: vgic-new: enable build Christoffer Dall (9): KVM: arm/arm64: Remove the IRQ field from struct irq_phys_map KVM: arm/arm64: Get rid of vgic_cpu->nr_lr KVM: arm/arm64: Fix MMIO emulation data handling KVM: arm/arm64: Export mmio_read/write_bus KVM: arm/arm64: vgic-new: Add data structure definitions KVM: arm/arm64: vgic-new: Add acccessor to new struct vgic_irq instance KVM: arm/arm64: vgic-new: Implement virtual IRQ injection KVM: arm/arm64: vgic-new: Add IRQ sorting KVM: arm/arm64: vgic-new: Export register access interface Eric Auger (12): KVM: arm/arm64: vgic-new: Implement kvm_vgic_vcpu_pending_irq KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM device ops registration KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM_DEV_ARM_VGIC_GRP_NR_IRQS KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM_DEV_ARM_VGIC_GRP_CTRL KVM: arm/arm64: vgic-new: vgic_kvm_device: implement kvm_vgic_addr KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM_DEV_ARM_VGIC_GRP_ADDR KVM: arm/arm64: vgic-new: vgic_kvm_device: access to VGIC registers KVM: arm/arm64: vgic-new: vgic_init: implement kvm_vgic_hyp_init KVM: arm/arm64: vgic-new: vgic_init: implement vgic_create KVM: arm/arm64: vgic-new: vgic_init: implement vgic_init KVM: arm/arm64: vgic-new: vgic_init: implement map_resources KVM: arm/arm64: vgic-new: Add vgic_v2/v3_enable Marc Zyngier (5): KVM: arm/arm64: vgic-new: Add IRQ sync/flush framework KVM: arm/arm64: vgic-new: Add GICv2 world switch backend KVM: arm/arm64: vgic-new: Add GICv3 world switch backend KVM: arm/arm64: vgic-new: Add MMIO handling framework KVM: arm/arm64: vgic-new: Add CTLR, TYPER and IIDR handlers arch/arm/include/asm/kvm_mmio.h | 3 + arch/arm/kvm/Kconfig | 7 + arch/arm/kvm/Makefile | 11 + arch/arm/kvm/mmio.c | 24 +- arch/arm64/include/asm/kvm_mmio.h | 3 + arch/arm64/kvm/Kconfig | 7 + arch/arm64/kvm/Makefile | 12 + include/kvm/arm_arch_timer.h | 3 - include/kvm/arm_vgic.h | 20 +- include/kvm/vgic/vgic.h | 253 +++++++++++++++ include/linux/irqchip/arm-gic-v3.h | 6 + include/linux/irqchip/arm-gic.h | 2 + virt/kvm/arm/arch_timer.c | 42 ++- virt/kvm/arm/hyp/vgic-v2-sr.c | 17 +- virt/kvm/arm/pmu.c | 2 +- virt/kvm/arm/vgic-v2.c | 4 +- virt/kvm/arm/vgic-v3.c | 8 +- virt/kvm/arm/vgic.c | 86 ++--- virt/kvm/arm/vgic/vgic-init.c | 446 ++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-irqfd.c | 52 +++ virt/kvm/arm/vgic/vgic-kvm-device.c | 452 ++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-mmio-v2.c | 422 +++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-mmio-v3.c | 464 +++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-mmio.c | 523 ++++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-mmio.h | 128 ++++++++ virt/kvm/arm/vgic/vgic-v2.c | 358 +++++++++++++++++++++ virt/kvm/arm/vgic/vgic-v3.c | 333 +++++++++++++++++++ virt/kvm/arm/vgic/vgic.c | 615 ++++++++++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic.h | 121 +++++++ 29 files changed, 4309 insertions(+), 115 deletions(-) create mode 100644 include/kvm/vgic/vgic.h create mode 100644 virt/kvm/arm/vgic/vgic-init.c create mode 100644 virt/kvm/arm/vgic/vgic-irqfd.c create mode 100644 virt/kvm/arm/vgic/vgic-kvm-device.c create mode 100644 virt/kvm/arm/vgic/vgic-mmio-v2.c create mode 100644 virt/kvm/arm/vgic/vgic-mmio-v3.c create mode 100644 virt/kvm/arm/vgic/vgic-mmio.c create mode 100644 virt/kvm/arm/vgic/vgic-mmio.h create mode 100644 virt/kvm/arm/vgic/vgic-v2.c create mode 100644 virt/kvm/arm/vgic/vgic-v3.c create mode 100644 virt/kvm/arm/vgic/vgic.c create mode 100644 virt/kvm/arm/vgic/vgic.h -- 2.7.3 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
