[PATCH v5 0/9] KVM: arm64: Fixes for guest CPU feature trapping and enabling

Fuad Tabba tabba at google.com
Tue Nov 18 02:37:57 PST 2025


Hi,

This series contains several fixes for guest feature trapping and
enabling, as well as a bit of tidying up.

Changes from v3 [1]:
- Add a map of KVM capabilities to IOCTLs (Oliver)
- Based on Linux 6.18-rc6

Cheers,
/fuad

[1] https://lore.kernel.org/all/20251110134525.3768197-1-tabba@google.com/

Fuad Tabba (9):
  KVM: arm64: Fix Trace Buffer trapping for protected VMs
  KVM: arm64: Fix Trace Buffer trap polarity for protected VMs
  KVM: arm64: Fix MTE flag initialization for protected VMs
  KVM: arm64: Introduce helper to calculate fault IPA offset
  KVM: arm64: Include VM type when checking VM capabilities in pKVM
  KVM: arm64: Do not allow KVM_CAP_ARM_MTE for any guest in pKVM
  KVM: arm64: Track KVM IOCTLs and their associated KVM caps
  KVM: arm64: Check whether a VM IOCTL is allowed in pKVM
  KVM: arm64: Prevent host from managing timer offsets for protected VMs

 arch/arm64/include/asm/kvm_arm.h         |  2 ++
 arch/arm64/include/asm/kvm_host.h        | 42 ++++++++++++++++++++++++
 arch/arm64/include/asm/kvm_pkvm.h        | 33 ++++++++++++++++---
 arch/arm64/kvm/arch_timer.c              | 18 +++++++---
 arch/arm64/kvm/arm.c                     |  7 ++--
 arch/arm64/kvm/hyp/nvhe/pkvm.c           | 18 +++++-----
 arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c |  2 +-
 arch/arm64/kvm/inject_fault.c            |  2 +-
 arch/arm64/kvm/mmu.c                     |  4 +--
 include/uapi/linux/kvm.h                 |  1 +
 10 files changed, 105 insertions(+), 24 deletions(-)


base-commit: 6a23ae0a96a600d1d12557add110e0bb6e32730c
-- 
2.52.0.rc1.455.g30608eb744-goog




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