Hi, this is another rework of the new VGIC series. Most prominent changes this time include a complete rewrite of the MMIO framework and splitting the emulation bits for GICv2 and GICv3 into separate files (patch 20/54 and 21/54) - many thanks to Christoffer and Marc for taking care of that. We dropped support for userland save and restore of any GICv3 register, as the ABI hasn't been fully agreed upon. Also the arch_timer rework series has now been integrated (making up the first seven patches), since it's a prerequisite for the new VGIC and also not very useful without it. Some fixes - especially for GICv3 emulation - have also been integrated. The file names have been trimmed to all using dashes instead of a mixture of dashes and underscores. The patches that saw changes have had their changelog updated. All the open issues that were mentioned in the last cover letter have either been addressed or dismissed. The series survived some testing on various hosts - both GICv2 and GICv3, also 32-bit GICv2 hosts - and various guests. Some basic cross-endian tests were done as well, with both 64-bit LE and BE guests surviving boot and hackbench runs on a 64-bit BE host. Also a 32-bit BE guest was booted successfully on a 64-bit LE host. 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 now based on v4.6-rc5. A git tree containing this series can be found on linux-arm.org: git://linux-arm.org/linux-ap.git branch: vgic-new/v2 http://www.linux-arm.org/git?p=linux-ap.git;a=log;h=refs/heads/vgic-new/v2 Cheers, Andre. =========================== 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 (28): 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: 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: KVM_DEV_ARM_VGIC_GRP_ADDR KVM: arm/arm64: vgic-new: vgic_kvm_device: access to VGIC registers KVM: arm/arm64: vgic-new: vgic_kvm_device: implement kvm_vgic_addr 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 | 1 + include/linux/irqchip/arm-gic.h | 2 + virt/kvm/arm/arch_timer.c | 43 ++- 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.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 | 522 +++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic-mmio-v2.c | 312 ++++++++++++++++++ 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 | 335 +++++++++++++++++++ virt/kvm/arm/vgic/vgic.c | 631 ++++++++++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic.h | 122 +++++++ 28 files changed, 4285 insertions(+), 106 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
