[v6,00/12] KVM: arm64: Fixed features for protected VMs

Message

Fuad Tabba Sept. 22, 2021, 12:46 p.m. UTC

Hi,

Changes since v5 [1]:
- Rebase on 5.15-rc2
- Include Marc's early exception handlers in the series
- Refactoring and fixes (Drew, Marc)

This patch series adds support for restricting CPU features for protected VMs
in KVM (pKVM). For more background, please refer to the previous series [1].

This series is based on 5.15-rc2. You can find the applied series here [2].

Cheers,
/fuad

[1] https://lore.kernel.org/kvmarm/[e-mail]/

[2] https://android-kvm.googlesource.com/linux/+/refs/heads/tabba/el2_fixed_feature_v6

Fuad Tabba (9):
  KVM: arm64: Add missing FORCE prerequisite in Makefile
  KVM: arm64: Pass struct kvm to per-EC handlers
  KVM: arm64: Add missing field descriptor for MDCR_EL2
  KVM: arm64: Simplify masking out MTE in feature id reg
  KVM: arm64: Add handlers for protected VM System Registers
  KVM: arm64: Initialize trap registers for protected VMs
  KVM: arm64: Move sanitized copies of CPU features
  KVM: arm64: Trap access to pVM restricted features
  KVM: arm64: Handle protected guests at 32 bits

Marc Zyngier (3):
  KVM: arm64: Move __get_fault_info() and co into their own include file
  KVM: arm64: Don't include switch.h into nvhe/kvm-main.c
  KVM: arm64: Move early handlers to per-EC handlers

 arch/arm64/include/asm/kvm_arm.h           |   1 +
 arch/arm64/include/asm/kvm_asm.h           |   1 +
 arch/arm64/include/asm/kvm_fixed_config.h  | 195 ++++++++
 arch/arm64/include/asm/kvm_host.h          |   2 +
 arch/arm64/include/asm/kvm_hyp.h           |   5 +
 arch/arm64/kvm/arm.c                       |  13 +
 arch/arm64/kvm/hyp/include/hyp/fault.h     |  75 ++++
 arch/arm64/kvm/hyp/include/hyp/switch.h    | 221 ++++-----
 arch/arm64/kvm/hyp/include/nvhe/pkvm.h     |  14 +
 arch/arm64/kvm/hyp/include/nvhe/sys_regs.h |  28 ++
 arch/arm64/kvm/hyp/nvhe/Makefile           |   4 +-
 arch/arm64/kvm/hyp/nvhe/hyp-main.c         |  12 +-
 arch/arm64/kvm/hyp/nvhe/mem_protect.c      |   8 +-
 arch/arm64/kvm/hyp/nvhe/pkvm.c             | 186 ++++++++
 arch/arm64/kvm/hyp/nvhe/switch.c           | 117 +++++
 arch/arm64/kvm/hyp/nvhe/sys_regs.c         | 494 +++++++++++++++++++++
 arch/arm64/kvm/hyp/vhe/switch.c            |  17 +
 arch/arm64/kvm/sys_regs.c                  |  10 +-
 18 files changed, 1257 insertions(+), 146 deletions(-)
 create mode 100644 arch/arm64/include/asm/kvm_fixed_config.h
 create mode 100644 arch/arm64/kvm/hyp/include/hyp/fault.h
 create mode 100644 arch/arm64/kvm/hyp/include/nvhe/pkvm.h
 create mode 100644 arch/arm64/kvm/hyp/include/nvhe/sys_regs.h
 create mode 100644 arch/arm64/kvm/hyp/nvhe/pkvm.c
 create mode 100644 arch/arm64/kvm/hyp/nvhe/sys_regs.c


base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82