[0/5] KVM: arm64: Cleanups and one optimization

Message

Alexandru Elisei July 14, 2021, 9:55 a.m. UTC

The first four patches are cosmetic and aim to remove the inconsistencies I
noticed around ctxt_sys_reg/vcpu_sys_reg and how feature bits are checked.

The last patch is a minor optimization to the way KVM disables profiling
when running with VHE disabled.

Based on v5.14-rc1. The changes touch quite a lot of code, I'm happy to
rebase on another branch if necessary.

Boot tested on an odroid c4 with 4k, 16k and 64k guests running on 4k, 16k
and 64k hosts (so 3 x 3 tests in total).

Alexandru Elisei (5):
  KVM: arm64: Move vcpu_has_feature() to asm/kvm_host.h
  KVM: arm64: Use vcpu_has_feature() to check the feature bits
  KVM: arm64: Rename __vcpu_sys_reg -> vcpu_sys_reg
  KVM: arm64: Add __vcpu_sys_reg()
  KVM: arm64: nVHE: Remove unneeded isb() when modifying PMSCR_EL1

 arch/arm64/include/asm/kvm_emulate.h       |  7 +--
 arch/arm64/include/asm/kvm_host.h          | 13 +++--
 arch/arm64/kvm/arch_timer.c                | 20 ++++----
 arch/arm64/kvm/arm.c                       |  5 +-
 arch/arm64/kvm/fpsimd.c                    |  2 +-
 arch/arm64/kvm/guest.c                     |  6 +--
 arch/arm64/kvm/hyp/exception.c             |  4 +-
 arch/arm64/kvm/hyp/include/hyp/switch.h    |  6 +--
 arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 12 ++---
 arch/arm64/kvm/hyp/nvhe/debug-sr.c         |  1 -
 arch/arm64/kvm/pmu-emul.c                  | 58 +++++++++++-----------
 arch/arm64/kvm/psci.c                      |  2 +-
 arch/arm64/kvm/reset.c                     | 12 ++---
 arch/arm64/kvm/sys_regs.c                  | 54 ++++++++++----------
 arch/arm64/kvm/sys_regs.h                  |  4 +-
 include/kvm/arm_psci.h                     |  2 +-
 16 files changed, 103 insertions(+), 105 deletions(-)