[PATCH v3 00/11] KVM: arm64: Accelerate lookup of vcpus by MPIDR values (and other fixes)

[Marc Zyngier]

This is a follow-up on [2], which addresses both the O(n) SGI injection
issue, and cleans up a number of embarassing bugs steaming form the
vcpuid/vcpu_idx confusion.

See the changelog below for details.

Oliver, assuming that you haven't changed your mind and that
nobody shouts, feel free to queue this in -next.

* From v2 [2]:
  - Killed a number of online_vcpus comparisons, which didn't make
    much sense (Zenghui)
  - Added missing commit logs (oops)
  - Fixed some comments
  - Collected RBs, with thanks

* From v1 [1]:
  - Added a bunch of patches fixing the vcpu_id[x] ambiguity
  - Added a documentation update spelling out some extra ordering requirements
  - Collected RBs/TBs, with thanks

[1] https://lore.kernel.org/r/20230907100931.1186690-1-maz@kernel.org
[2] https://lore.kernel.org/r/20230920181731.2232453-1-maz@kernel.org

Marc Zyngier (11):
  KVM: arm64: vgic: Make kvm_vgic_inject_irq() take a vcpu pointer
  KVM: arm64: vgic-its: Treat the collection target address as a vcpu_id
  KVM: arm64: vgic-v3: Refactor GICv3 SGI generation
  KVM: arm64: vgic-v2: Use cpuid from userspace as vcpu_id
  KVM: arm64: vgic: Use vcpu_idx for the debug information
  KVM: arm64: Use vcpu_idx for invalidation tracking
  KVM: arm64: Simplify kvm_vcpu_get_mpidr_aff()
  KVM: arm64: Build MPIDR to vcpu index cache at runtime
  KVM: arm64: Fast-track kvm_mpidr_to_vcpu() when mpidr_data is
    available
  KVM: arm64: vgic-v3: Optimize affinity-based SGI injection
  KVM: arm64: Clarify the ordering requirements for vcpu/RD creation

 .../virt/kvm/devices/arm-vgic-v3.rst          |   7 +
 arch/arm64/include/asm/kvm_emulate.h          |   2 +-
 arch/arm64/include/asm/kvm_host.h             |  28 ++++
 arch/arm64/kvm/arch_timer.c                   |   2 +-
 arch/arm64/kvm/arm.c                          |  93 +++++++++--
 arch/arm64/kvm/pmu-emul.c                     |   2 +-
 arch/arm64/kvm/vgic/vgic-debug.c              |   6 +-
 arch/arm64/kvm/vgic/vgic-irqfd.c              |   2 +-
 arch/arm64/kvm/vgic/vgic-its.c                |  49 +++---
 arch/arm64/kvm/vgic/vgic-kvm-device.c         |   8 +-
 arch/arm64/kvm/vgic/vgic-mmio-v3.c            | 150 +++++++-----------
 arch/arm64/kvm/vgic/vgic.c                    |  12 +-
 include/kvm/arm_vgic.h                        |   4 +-
 13 files changed, 212 insertions(+), 153 deletions(-)

-- 
2.34.1