[GIT PULL] First batch of KVM changes for 4.5 merge window

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Linus,

The following changes since commit 9f9499ae8e6415cefc4fe0a96ad0e27864353c89:

  Linux 4.4-rc5 (2015-12-13 17:42:58 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus

for you to fetch changes up to 45bdbcfdf241149642fb6c25ab0c209d59c371b7:

  kvm: x86: Fix vmwrite to SECONDARY_VM_EXEC_CONTROL (2016-01-12 11:42:16 +0100)

PPC changes will come next week.
----------------------------------------------------------------
* s390: Support for runtime instrumentation within guests,
support of 248 VCPUs.

* ARM: rewrite of the arm64 world switch in C, support for
16-bit VM identifiers.  Performance counter virtualization
missed the boat.

* x86: Support for more Hyper-V features (synthetic interrupt
controller), MMU cleanups

----------------------------------------------------------------
Amit Tomar (1):
      KVM: arm/arm64: Count guest exit due to various reasons

Andrey Smetanin (24):
      kvm/irqchip: kvm_arch_irq_routing_update renaming split
      kvm/x86: split ioapic-handled and EOI exit bitmaps
      kvm/x86: per-vcpu apicv deactivation support
      kvm/x86: Hyper-V synthetic interrupt controller
      kvm/x86: Hyper-V kvm exit
      drivers/hv: replace enum hv_message_type by u32
      drivers/hv: Move HV_SYNIC_STIMER_COUNT into Hyper-V UAPI x86 header
      drivers/hv: Move struct hv_message into UAPI Hyper-V x86 header
      drivers/hv: Move struct hv_timer_message_payload into UAPI Hyper-V x86 header
      kvm/x86: Rearrange func's declarations inside Hyper-V header
      kvm/x86: Added Hyper-V vcpu_to_hv_vcpu()/hv_vcpu_to_vcpu() helpers
      kvm/x86: Hyper-V internal helper to read MSR HV_X64_MSR_TIME_REF_COUNT
      kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack
      kvm/x86: Hyper-V SynIC timers
      kvm/x86: Remove Hyper-V SynIC timer stopping
      kvm/x86: Hyper-V timers fix incorrect logical operation
      kvm/x86: Drop stimer_stop() function
      kvm/x86: Hyper-V unify stimer_start() and stimer_restart()
      kvm/x86: Reorg stimer_expiration() to better control timer restart
      kvm/x86: Hyper-V fix SynIC timer disabling condition
      kvm/x86: Skip SynIC vector check for QEMU side
      kvm/x86: Update SynIC timers on guest entry only
      kvm/x86: Hyper-V SynIC tracepoints
      kvm/x86: Hyper-V SynIC timers tracepoints

Borislav Petkov (1):
      kvm: Dump guest rIP when the guest tried something unsupported

Christian Borntraeger (3):
      KVM: s390: remove redudant assigment of error code
      KVM: s390: use assignment instead of memcpy
      KVM: s390: obey kptr_restrict in traces

David Hildenbrand (12):
      KVM: Use common function for VCPU lookup by id
      KVM: use heuristic for fast VCPU lookup by id
      KVM: s390: rewrite vcpu_post_run and drop out early
      KVM: s390: fast path for sca_ext_call_pending
      KVM: s390: we always have a SCA
      KVM: s390: fix SCA related races and double use
      KVM: s390: always set/clear the SCA sda field
      KVM: s390: cleanup sca_add_vcpu
      KVM: s390: don't switch to ESCA for ucontrol
      s390/sclp: introduce check for SIE
      s390: show virtualization support in /proc/cpuinfo
      KVM: s390: don't load kvm without virtualization support

David Matlack (1):
      kvm: x86: fix comment about {mmu,nested_mmu}.gva_to_gpa

Dominik Dingel (1):
      KVM: s390: fix mismatch between user and in-kernel guest limit

Eugene (jno) Dvurechenski (8):
      s390/sclp: introduce checks for ESCA and HVS
      KVM: s390: Generalize access to IPTE controls
      KVM: s390: Generalize access to SIGP controls
      KVM: s390: Provide SCA-aware helpers for VCPU add/del
      KVM: s390: Introduce new structures
      KVM: s390: Make provisions for ESCA utilization
      KVM: s390: Introduce switching code
      KVM: s390: Enable up to 248 VCPUs per VM

Fan Zhang (1):
      KVM: s390: implement the RI support of guest

Fengguang Wu (1):
      MAINTAINERS: add git URL for KVM/ARM

Guenther Hutzl (1):
      KVM: s390: consider system MHA for guest storage

Heiko Carstens (1):
      KVM: s390: remove pointless test_facility(2) check

Huaitong Han (1):
      kvm: x86: Fix vmwrite to SECONDARY_VM_EXEC_CONTROL

Janosch Frank (1):
      KVM: Remove unnecessary debugfs dentry references

Jisheng Zhang (1):
      KVM: arm/arm64: vgic: make vgic_io_ops static

Li RongQing (1):
      KVM: VMX: fix the writing POSTED_INTR_NV

Marc Zyngier (23):
      arm64: KVM: Add a HYP-specific header file
      arm64: KVM: Implement vgic-v2 save/restore
      KVM: arm/arm64: vgic-v3: Make the LR indexing macro public
      arm64: KVM: Implement vgic-v3 save/restore
      arm64: KVM: Implement timer save/restore
      arm64: KVM: Implement system register save/restore
      arm64: KVM: Implement 32bit system register save/restore
      arm64: KVM: Implement debug save/restore
      arm64: KVM: Implement guest entry
      arm64: KVM: Add patchable function selector
      arm64: KVM: Implement the core world switch
      arm64: KVM: Implement fpsimd save/restore
      arm64: KVM: Implement TLB handling
      arm64: KVM: HYP mode entry points
      arm64: KVM: Add panic handling
      arm64: KVM: Add compatibility aliases
      arm64: KVM: Map the kernel RO section into HYP
      arm64: KVM: Move away from the assembly version of the world switch
      arm64: KVM: Turn system register numbers to an enum
      arm64: KVM: Cleanup asm-offset.c
      arm64: KVM: Remove weak attributes
      ARM: KVM: Cleanup exception injection
      arm64: KVM: debug: Remove spurious inline attributes

Mark Rutland (1):
      arm64: Add macros to read/write system registers

Markus Elfring (1):
      KVM-async_pf: Delete an unnecessary check before the function call "kmem_cache_destroy"

Michael S. Tsirkin (1):
      kvm/s390: drop unpaired smp_mb

Nicholas Krause (1):
      kvm: x86: Check kvm_write_guest return value in kvm_write_wall_clock

Paolo Bonzini (15):
      KVM: x86: expose MSR_TSC_AUX to userspace
      KVM: svm: add support for RDTSCP
      KVM: x86: correctly print #AC in traces
      KVM: x86: MMU: always set accessed bit in shadow PTEs
      Merge tag 'kvm-s390-next-4.5-1' of git://git.kernel.org/.../kvms390/linux into HEAD
      Merge tag 'kvm-s390-next-4.5-2' of git://git.kernel.org/.../kvms390/linux into HEAD
      KVM: VMX: fix read/write sizes of VMCS fields
      KVM: VMX: fix read/write sizes of VMCS fields in dump_vmcs
      KVM: vmx: detect mismatched size in VMCS read/write
      Merge tag 'kvm-arm-for-4.5-1' of git://git.kernel.org/.../kvmarm/kvmarm into kvm-next
      Merge tag 'kvm-s390-next-4.5-3' of git://git.kernel.org/.../kvms390/linux into HEAD
      KVM: Remove unused KVM_REQ_KICK to save a bit in vcpu->requests
      KVM: document which architecture uses each request bit
      KVM: renumber vcpu->request bits
      KVM: move architecture-dependent requests to arch/

Pavel Fedin (1):
      arm/arm64: KVM: Detect vGIC presence at runtime

Takuya Yoshikawa (11):
      KVM: x86: MMU: Encapsulate the type of rmap-chain head in a new struct
      KVM: x86: MMU: Remove unused parameter of __direct_map()
      KVM: x86: MMU: Add helper function to clear a bit in unsync child bitmap
      KVM: x86: MMU: Make mmu_set_spte() return emulate value
      KVM: x86: MMU: Remove is_rmap_spte() and use is_shadow_present_pte()
      KVM: x86: MMU: Consolidate BUG_ON checks for reverse-mapped sptes
      KVM: x86: MMU: Move initialization of parent_ptes out from kvm_mmu_alloc_page()
      KVM: x86: MMU: Move parent_pte handling from kvm_mmu_get_page() to link_shadow_page()
      KVM: x86: MMU: Use for_each_rmap_spte macro instead of pte_list_walk()
      KVM: x86: MMU: Remove unused parameter parent_pte from kvm_mmu_get_page()
      KVM: x86: MMU: Use clear_page() instead of init_shadow_page_table()

Vladimir Murzin (3):
      arm/arm64: KVM: Remove unreferenced S2_PGD_ORDER
      arm: KVM: Make kvm_arm.h friendly to assembly code
      arm64: KVM: Add support for 16-bit VMID

Yaowei Bai (3):
      KVM: kvm_is_visible_gfn can be boolean
      KVM: kvm_para_has_feature can be boolean
      KVM: powerpc: kvmppc_visible_gpa can be boolean

 Documentation/virtual/kvm/api.txt        |   41 ++
 Documentation/virtual/kvm/devices/vm.txt |    3 +-
 Documentation/virtual/kvm/mmu.txt        |    4 +-
 MAINTAINERS                              |    1 +
 arch/arm/include/asm/kvm_arm.h           |   34 +-
 arch/arm/include/asm/kvm_host.h          |    6 +
 arch/arm/include/asm/kvm_mmu.h           |    5 +
 arch/arm/kvm/arm.c                       |   40 +-
 arch/arm/kvm/emulate.c                   |   74 +-
 arch/arm/kvm/guest.c                     |    6 +
 arch/arm/kvm/handle_exit.c               |    3 +
 arch/arm/kvm/mmio.c                      |    3 +
 arch/arm/kvm/mmu.c                       |    6 +-
 arch/arm64/include/asm/kvm_arm.h         |    3 +-
 arch/arm64/include/asm/kvm_asm.h         |   76 ---
 arch/arm64/include/asm/kvm_emulate.h     |    1 -
 arch/arm64/include/asm/kvm_host.h        |   87 ++-
 arch/arm64/include/asm/kvm_mmio.h        |    1 -
 arch/arm64/include/asm/kvm_mmu.h         |    9 +-
 arch/arm64/include/asm/sysreg.h          |   21 +
 arch/arm64/kernel/asm-offsets.c          |   40 +-
 arch/arm64/kvm/Makefile                  |    3 +-
 arch/arm64/kvm/guest.c                   |   10 +-
 arch/arm64/kvm/handle_exit.c             |    4 +
 arch/arm64/kvm/hyp-init.S                |    9 +
 arch/arm64/kvm/hyp.S                     | 1081 +-----------------------------
 arch/arm64/kvm/hyp/Makefile              |   14 +
 arch/arm64/kvm/hyp/debug-sr.c            |  140 ++++
 arch/arm64/kvm/hyp/entry.S               |  160 +++++
 arch/arm64/kvm/hyp/fpsimd.S              |   33 +
 arch/arm64/kvm/hyp/hyp-entry.S           |  212 ++++++
 arch/arm64/kvm/hyp/hyp.h                 |   90 +++
 arch/arm64/kvm/hyp/switch.c              |  175 +++++
 arch/arm64/kvm/hyp/sysreg-sr.c           |  138 ++++
 arch/arm64/kvm/hyp/timer-sr.c            |   71 ++
 arch/arm64/kvm/hyp/tlb.c                 |   80 +++
 arch/arm64/kvm/hyp/vgic-v2-sr.c          |   84 +++
 arch/arm64/kvm/hyp/vgic-v3-sr.c          |  228 +++++++
 arch/arm64/kvm/sys_regs.c                |   59 +-
 arch/arm64/kvm/vgic-v2-switch.S          |  134 ----
 arch/arm64/kvm/vgic-v3-switch.S          |  269 --------
 arch/powerpc/include/asm/kvm_host.h      |    4 +
 arch/powerpc/kvm/book3s_hv.c             |   10 +-
 arch/powerpc/kvm/book3s_pr.c             |    4 +-
 arch/s390/include/asm/elf.h              |    7 +
 arch/s390/include/asm/kvm_host.h         |   57 +-
 arch/s390/include/asm/sclp.h             |    8 +-
 arch/s390/include/uapi/asm/kvm.h         |    5 +
 arch/s390/kernel/processor.c             |    6 +
 arch/s390/kernel/setup.c                 |    9 +
 arch/s390/kvm/diag.c                     |   11 +-
 arch/s390/kvm/gaccess.c                  |   38 +-
 arch/s390/kvm/intercept.c                |    7 +-
 arch/s390/kvm/interrupt.c                |  133 +++-
 arch/s390/kvm/kvm-s390.c                 |  300 ++++++---
 arch/s390/kvm/kvm-s390.h                 |    7 +
 arch/s390/kvm/trace-s390.h               |    6 +-
 arch/s390/mm/pgtable.c                   |    4 +-
 arch/x86/include/asm/kvm_host.h          |   75 ++-
 arch/x86/include/uapi/asm/hyperv.h       |   92 +++
 arch/x86/kvm/hyperv.c                    |  708 ++++++++++++++++++-
 arch/x86/kvm/hyperv.h                    |   55 ++
 arch/x86/kvm/ioapic.c                    |    4 +-
 arch/x86/kvm/ioapic.h                    |    7 +-
 arch/x86/kvm/irq.c                       |    2 +-
 arch/x86/kvm/irq_comm.c                  |   41 +-
 arch/x86/kvm/lapic.c                     |   40 +-
 arch/x86/kvm/lapic.h                     |    9 +-
 arch/x86/kvm/mmu.c                       |  397 +++++------
 arch/x86/kvm/mmu_audit.c                 |   15 +-
 arch/x86/kvm/paging_tmpl.h               |   20 +-
 arch/x86/kvm/svm.c                       |   37 +-
 arch/x86/kvm/trace.h                     |  265 +++++++-
 arch/x86/kvm/vmx.c                       |  202 ++++--
 arch/x86/kvm/x86.c                       |  110 ++-
 drivers/hv/hyperv_vmbus.h                |   88 +--
 drivers/s390/char/sclp_early.c           |   16 +-
 include/clocksource/arm_arch_timer.h     |    6 +
 include/kvm/arm_vgic.h                   |    6 +
 include/linux/kvm_host.h                 |   66 +-
 include/linux/kvm_para.h                 |    6 +-
 include/uapi/linux/kvm.h                 |   26 +
 virt/kvm/arm/vgic-v3.c                   |   11 +-
 virt/kvm/arm/vgic.c                      |    2 +-
 virt/kvm/async_pf.c                      |    3 +-
 virt/kvm/irqchip.c                       |    7 +-
 virt/kvm/kvm_main.c                      |   46 +-
 87 files changed, 4043 insertions(+), 2393 deletions(-)
 create mode 100644 arch/arm64/kvm/hyp/Makefile
 create mode 100644 arch/arm64/kvm/hyp/debug-sr.c
 create mode 100644 arch/arm64/kvm/hyp/entry.S
 create mode 100644 arch/arm64/kvm/hyp/fpsimd.S
 create mode 100644 arch/arm64/kvm/hyp/hyp-entry.S
 create mode 100644 arch/arm64/kvm/hyp/hyp.h
 create mode 100644 arch/arm64/kvm/hyp/switch.c
 create mode 100644 arch/arm64/kvm/hyp/sysreg-sr.c
 create mode 100644 arch/arm64/kvm/hyp/timer-sr.c
 create mode 100644 arch/arm64/kvm/hyp/tlb.c
 create mode 100644 arch/arm64/kvm/hyp/vgic-v2-sr.c
 create mode 100644 arch/arm64/kvm/hyp/vgic-v3-sr.c
 delete mode 100644 arch/arm64/kvm/vgic-v2-switch.S
 delete mode 100644 arch/arm64/kvm/vgic-v3-switch.S
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