KVM: x86: Fixes for 6.4

From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Subject: KVM: x86: Fixes for 6.4
Date: Fri,  2 Jun 2023 17:52:14 -0700	[thread overview]
Message-ID: <20230603005213.1035921-2-seanjc@google.com> (raw)

Please pull a few x86 fixes for 6.4.  Nothing ridiculously urgent, but the
vNMI fix in particular would be nice to get in 6.4.

The following changes since commit b9846a698c9aff4eb2214a06ac83638ad098f33f:

  KVM: VMX: add MSR_IA32_TSX_CTRL into msrs_to_save (2023-05-21 04:05:51 -0400)

are available in the Git repository at:

  https://github.com/kvm-x86/linux.git tags/kvm-x86-fixes-6.4

for you to fetch changes up to 47d2804bc99ca873470df17c20737b28225a320d:

  KVM: selftests: Add test for race in kvm_recalculate_apic_map() (2023-06-02 17:21:06 -0700)

----------------------------------------------------------------
KVM x86 fixes for 6.4

 - Fix a memslot lookup bug in the NX recovery thread that could
   theoretically let userspace bypass the NX hugepage mitigation

 - Fix a s/BLOCKING/PENDING bug in SVM's vNMI support

 - Account exit stats for fastpath VM-Exits that never leave the super
   tight run-loop

 - Fix an out-of-bounds bug in the optimized APIC map code, and add a
   regression test for the race.

----------------------------------------------------------------
Maciej S. Szmigiero (1):
      KVM: SVM: vNMI pending bit is V_NMI_PENDING_MASK not V_NMI_BLOCKING_MASK

Michal Luczaj (1):
      KVM: selftests: Add test for race in kvm_recalculate_apic_map()

Sean Christopherson (3):
      KVM: x86/mmu: Grab memslot for correct address space in NX recovery worker
      KVM: x86: Account fastpath-only VM-Exits in vCPU stats
      KVM: x86: Bail from kvm_recalculate_phys_map() if x2APIC ID is out-of-bounds

 arch/x86/kvm/lapic.c                               | 20 +++++-
 arch/x86/kvm/mmu/mmu.c                             |  5 +-
 arch/x86/kvm/svm/svm.c                             |  2 +-
 arch/x86/kvm/x86.c                                 |  3 +
 tools/testing/selftests/kvm/Makefile               |  1 +
 .../selftests/kvm/x86_64/recalc_apic_map_test.c    | 74 ++++++++++++++++++++++
 6 files changed, 101 insertions(+), 4 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/x86_64/recalc_apic_map_test.c