• Linus Torvalds's avatar
    Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 10dc3747
    Linus Torvalds authored
    Pull KVM updates from Paolo Bonzini:
     "One of the largest releases for KVM...  Hardly any generic
      changes, but lots of architecture-specific updates.
       - VHE support so that we can run the kernel at EL2 on ARMv8.1 systems
       - PMU support for guests
       - 32bit world switch rewritten in C
       - various optimizations to the vgic save/restore code.
       - enabled KVM-VFIO integration ("VFIO device")
       - optimizations to speed up IPIs between vcpus
       - in-kernel handling of IOMMU hypercalls
       - support for dynamic DMA windows (DDW).
       - provide the floating point registers via sync regs;
       - separated instruction vs.  data accesses
       - dirty log improvements for huge guests
       - bugfixes and documentation improvements.
       - Hyper-V VMBus hypercall userspace exit
       - alternative implementation of lowest-priority interrupts using
         vector hashing (for better VT-d posted interrupt support)
       - fixed guest debugging with nested virtualizations
       - improved interrupt tracking in the in-kernel IOAPIC
       - generic infrastructure for tracking writes to guest
         memory - currently its only use is to speedup the legacy shadow
         paging (pre-EPT) case, but in the future it will be used for
         virtual GPUs as well
       - much cleanup (LAPIC, kvmclock, MMU, PIT), including ubsan fixes"
    * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (217 commits)
      KVM: x86: remove eager_fpu field of struct kvm_vcpu_arch
      KVM: x86: disable MPX if host did not enable MPX XSAVE features
      arm64: KVM: vgic-v3: Only wipe LRs on vcpu exit
      arm64: KVM: vgic-v3: Reset LRs at boot time
      arm64: KVM: vgic-v3: Do not save an LR known to be empty
      arm64: KVM: vgic-v3: Save maintenance interrupt state only if required
      arm64: KVM: vgic-v3: Avoid accessing ICH registers
      KVM: arm/arm64: vgic-v2: Make GICD_SGIR quicker to hit
      KVM: arm/arm64: vgic-v2: Only wipe LRs on vcpu exit
      KVM: arm/arm64: vgic-v2: Reset LRs at boot time
      KVM: arm/arm64: vgic-v2: Do not save an LR known to be empty
      KVM: arm/arm64: vgic-v2: Move GICH_ELRSR saving to its own function
      KVM: arm/arm64: vgic-v2: Save maintenance interrupt state only if required
      KVM: arm/arm64: vgic-v2: Avoid accessing GICH registers
      KVM: s390: allocate only one DMA page per VM
      KVM: s390: enable STFLE interpretation only if enabled for the guest
      KVM: s390: wake up when the VCPU cpu timer expires
      KVM: s390: step the VCPU timer while in enabled wait
      KVM: s390: protect VCPU cpu timer with a seqcount
      KVM: s390: step VCPU cpu timer during kvm_run ioctl
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