[PATCH v2 0/4] KVM: arm64: Add attribute to control GICD_TYPER2.nASSGIcap

[Oliver Upton <oliver.upton@linux.dev>]

Raghu, I applied this locally for review and wound up changing enough
things to where it was easier just to repost. Sorry, hope you don't
mind.

v1: https://lore.kernel.org/kvmarm/20250514192159.1751538-1-rananta@google.com/

v1 -> v2:
 - Drop all use of GICv4 in the UAPI and KVM-internal helpers in favor
   of nASSGIcap. This changes things around to model a guest feature,
   not a host feature.

 - Consolidate UAPI into a single attribute and expect userspace to use
   to read the attribute for discovery, much like we do with the ID
   registers

 - Squash documentation together with implementation

 - Clean up maintenance IRQ attribute handling, which I ran into as part
   of reviewing this series

Oliver Upton (2):
  KVM: arm64: Disambiguate support for vSGIs v. vLPIs
  KVM: arm64: vgic-v3: Consolidate MAINT_IRQ handling

Raghavendra Rao Ananta (2):
  KVM: arm64: Introduce attribute to control GICD_TYPER2.nASSGIcap
  KVM: arm64: selftests: Add test for nASSGIcap attribute

 .../virt/kvm/devices/arm-vgic-v3.rst          | 29 ++++++
 arch/arm64/include/uapi/asm/kvm.h             |  3 +
 arch/arm64/kvm/vgic/vgic-init.c               |  7 +-
 arch/arm64/kvm/vgic/vgic-kvm-device.c         | 88 +++++++++++++------
 arch/arm64/kvm/vgic/vgic-mmio-v3.c            | 24 +++--
 arch/arm64/kvm/vgic/vgic-v4.c                 |  4 +-
 arch/arm64/kvm/vgic/vgic.c                    |  4 +-
 arch/arm64/kvm/vgic/vgic.h                    |  7 ++
 include/kvm/arm_vgic.h                        |  3 +
 tools/testing/selftests/kvm/arm64/vgic_init.c | 41 +++++++++
 10 files changed, 172 insertions(+), 38 deletions(-)


base-commit: 1b85d923ba8c9e6afaf19e26708411adde94fba8
-- 
2.39.5