[v1,0/6] KVM: arm64: Fixes to fine grain traps and pKVM traps

Message

Fuad Tabba Dec. 5, 2023, 10:22 a.m. UTC

This patch series has fixes, updates, and code for validating
fine grain trap register masks, as well as some fixes to feature
trapping in pKVM.

New fine grain trap (FGT) bits have been defined in the latest
Arm Architecture System Registers xml specification (2023-09)
[*], so the code is updated to reflect them. Moreover, some of
the already-defined masks overlap with res0, which this series
fixes. It also adds FGT register masks that weren't defined
earlier, as well as build time validation that the bits of the
various masks are all accounted for and without overlap.

Based on 6.7-rc4.

Cheers,
/fuad

[*] https://developer.arm.com/downloads/-/exploration-tools

Fuad Tabba (6):
  KVM: arm64: Update and fix FGT register masks
  KVM: arm64: Add bit masks for HAFGRTR_EL2
  KVM: arm64: Add build validation for trap mask values
  KVM: arm64: Calculate FGT RES0 Bits
  KVM: arm64: Trap external trace for protected VMs
  KVM: arm64: Mark features as supported for protected VMs

 arch/arm64/include/asm/kvm_arm.h              | 56 +++++++++++--------
 arch/arm64/kvm/hyp/include/hyp/switch.h       | 16 ++++++
 .../arm64/kvm/hyp/include/nvhe/fixed_config.h |  4 +-
 arch/arm64/kvm/hyp/nvhe/pkvm.c                |  4 ++
 arch/arm64/tools/sysreg                       |  5 +-
 5 files changed, 59 insertions(+), 26 deletions(-)


base-commit: 33cc938e65a98f1d29d0a18403dbbee050dcad9a