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

[Fuad Tabba]

On Tue, 18 Nov 2025 at 10:38, Fuad Tabba <tabba at google.com> wrote:
>
> Hi,
>
> This series contains several fixes for guest feature trapping and
> enabling, as well as a bit of tidying up.
>
> Changes from v3 [1]:

This should be
Changes from v4 [1]:
[1] https://lore.kernel.org/all/20251112092051.1376245-1-tabba@google.com/

Cheers,
/fuad

> - 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
>