[GIT PULL] KVM updates for Linux 5.13-rc2

[Paolo Bonzini <pbonzini@redhat.com>]

Linus,

The following changes since commit 9ccce092fc64d19504fa54de4fd659e279cc92e7:

  Merge tag 'for-linus-5.13-ofs-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux (2021-05-02 14:13:46 -0700)

are available in the Git repository at:

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

for you to fetch changes up to ce7ea0cfdc2e9ff31d12da31c3226deddb9644f5:

  KVM: SVM: Move GHCB unmapping to fix RCU warning (2021-05-07 06:06:23 -0400)

Thomas Gleixner and Michael Ellerman had some KVM changes in their
late merge window pull requests, but there are no conflicts.

----------------------------------------------------------------
* Lots of bug fixes.

* Fix virtualization of RDPID

* Virtualization of DR6_BUS_LOCK, which on bare metal is new in
  the 5.13 merge window

* More nested virtualization migration fixes (nSVM and eVMCS)

* Fix for KVM guest hibernation

* Fix for warning in SEV-ES SRCU usage

* Block KVM from loading on AMD machines with 5-level page tables,
  due to the APM not mentioning how host CR4.LA57 exactly impacts
  the guest.

----------------------------------------------------------------
Benjamin Segall (1):
      kvm: exit halt polling on need_resched() as well

Bill Wendling (1):
      selftests: kvm: remove reassignment of non-absolute variables

Chenyi Qiang (1):
      KVM: X86: Add support for the emulation of DR6_BUS_LOCK bit

Colin Ian King (1):
      KVM: x86: Fix potential fput on a null source_kvm_file

David Matlack (1):
      kvm: Cap halt polling at kvm->max_halt_poll_ns

Kai Huang (2):
      KVM: x86/mmu: Avoid unnecessary page table allocation in kvm_tdp_mmu_map()
      KVM: x86/mmu: Fix kdoc of __handle_changed_spte

Maxim Levitsky (5):
      KVM: nSVM: fix a typo in svm_leave_nested
      KVM: nSVM: fix few bugs in the vmcb02 caching logic
      KVM: nSVM: leave the guest mode prior to loading a nested state
      KVM: nSVM: always restore the L1's GIF on migration
      KVM: nSVM: remove a warning about vmcb01 VM exit reason

Nicholas Piggin (1):
      KVM: PPC: Book3S HV: Fix conversion to gfn-based MMU notifier callbacks

Paolo Bonzini (1):
      KVM: X86: Expose bus lock debug exception to guest

Sean Christopherson (17):
      KVM: VMX: Do not advertise RDPID if ENABLE_RDTSCP control is unsupported
      KVM: x86: Emulate RDPID only if RDTSCP is supported
      KVM: SVM: Inject #UD on RDTSCP when it should be disabled in the guest
      KVM: x86: Move RDPID emulation intercept to its own enum
      KVM: VMX: Disable preemption when probing user return MSRs
      KVM: SVM: Probe and load MSR_TSC_AUX regardless of RDTSCP support in host
      KVM: x86: Add support for RDPID without RDTSCP
      KVM: VMX: Configure list of user return MSRs at module init
      KVM: VMX: Use flag to indicate "active" uret MSRs instead of sorting list
      KVM: VMX: Use common x86's uret MSR list as the one true list
      KVM: VMX: Disable loading of TSX_CTRL MSR the more conventional way
      KVM: x86: Export the number of uret MSRs to vendor modules
      KVM: x86: Move uret MSR slot management to common x86
      KVM: x86: Tie Intel and AMD behavior for MSR_TSC_AUX to guest CPU model
      KVM: x86: Hide RDTSCP and RDPID if MSR_TSC_AUX probing failed
      KVM: x86: Prevent KVM SVM from loading on kernels with 5-level paging
      KVM: SVM: Invert user pointer casting in SEV {en,de}crypt helpers

Shahin, Md Shahadat Hossain (1):
      kvm/x86: Fix 'lpages' kvm stat for TDM MMU

Siddharth Chandrasekaran (2):
      doc/kvm: Fix wrong entry for KVM_CAP_X86_MSR_FILTER
      KVM: x86: Hoist input checks in kvm_add_msr_filter()

Stefan Raspl (1):
      tools/kvm_stat: Fix documentation typo

Thomas Gleixner (2):
      KVM: x86: Cancel pvclock_gtod_work on module removal
      KVM: x86: Prevent deadlock against tk_core.seq

Tom Lendacky (1):
      KVM: SVM: Move GHCB unmapping to fix RCU warning

Vitaly Kuznetsov (9):
      x86/kvm: Fix pr_info() for async PF setup/teardown
      x86/kvm: Teardown PV features on boot CPU as well
      x86/kvm: Disable kvmclock on all CPUs on shutdown
      x86/kvm: Disable all PV features on crash
      x86/kvm: Unify kvm_pv_guest_cpu_reboot() with kvm_guest_cpu_offline()
      KVM: nVMX: Always make an attempt to map eVMCS after migration
      KVM: selftests: evmcs_test: Check that VMLAUNCH with bogus EVMPTR is causing #UD
      KVM: selftests: evmcs_test: Check that VMCS12 is alway properly synced to eVMCS after restore
      KVM: nVMX: Properly pad 'struct kvm_vmx_nested_state_hdr'

Wanpeng Li (1):
      KVM: LAPIC: Accurately guarantee busy wait for timer to expire when using hv_timer

 Documentation/virt/kvm/api.rst                    |   4 +-
 arch/powerpc/include/asm/kvm_book3s.h             |   2 +-
 arch/powerpc/kvm/book3s_64_mmu_hv.c               |  46 +++--
 arch/powerpc/kvm/book3s_64_mmu_radix.c            |   5 +-
 arch/x86/include/asm/kvm_host.h                   |  15 +-
 arch/x86/include/asm/kvm_para.h                   |  10 +-
 arch/x86/include/uapi/asm/kvm.h                   |   2 +
 arch/x86/kernel/kvm.c                             | 129 ++++++++-----
 arch/x86/kernel/kvmclock.c                        |  26 +--
 arch/x86/kvm/cpuid.c                              |  20 +-
 arch/x86/kvm/emulate.c                            |   2 +-
 arch/x86/kvm/kvm_emulate.h                        |   1 +
 arch/x86/kvm/lapic.c                              |   2 +-
 arch/x86/kvm/mmu/mmu.c                            |  20 +-
 arch/x86/kvm/mmu/tdp_mmu.c                        |  17 +-
 arch/x86/kvm/svm/nested.c                         |  23 ++-
 arch/x86/kvm/svm/sev.c                            |  32 ++--
 arch/x86/kvm/svm/svm.c                            |  62 +++---
 arch/x86/kvm/svm/svm.h                            |   1 +
 arch/x86/kvm/vmx/capabilities.h                   |   3 +
 arch/x86/kvm/vmx/nested.c                         |  29 ++-
 arch/x86/kvm/vmx/vmx.c                            | 220 +++++++++++-----------
 arch/x86/kvm/vmx/vmx.h                            |  12 +-
 arch/x86/kvm/x86.c                                | 153 +++++++++++----
 tools/kvm/kvm_stat/kvm_stat.txt                   |   2 +-
 tools/testing/selftests/kvm/lib/x86_64/handlers.S |   4 +-
 tools/testing/selftests/kvm/x86_64/evmcs_test.c   |  88 +++++++--
 virt/kvm/kvm_main.c                               |   7 +-
 28 files changed, 578 insertions(+), 359 deletions(-)