This is the fourth version of this series introducing ERET and PAuth
support for NV guests, and now the base prefix for the NV support
series.
Unless someone shouts, I intend to take this in for 6.10.
* From v3 [3]
- Check for NV support before checking for HCR_EL2.NV on vpcu exit
- Rebased on 6.9-rc1
* From v2 [2]
- Enforce that both Address and Generic authentication use the same
algorithm
- Reduce PAuth trapping by eagerly setting the HCR_EL2.API/APK bits
- Collected RBs, with thanks
- Rebased on kvmarm-6.9
* From v1 [1]:
- Don't repaint the ISS_ERET* definitions, but provide reasonable
helpers instead
- Dropped superfluous VNCR_EL2 definition
- Amended comments and creative spelling
[1] https://lore.kernel.org/r/20240219092014.783809-1-maz@xxxxxxxxxx
[2] https://lore.kernel.org/r/20240226100601.2379693-1-maz@xxxxxxxxxx
[3] https://lore.kernel.org/r/20240321155356.3236459-1-maz@xxxxxxxxxx
Marc Zyngier (15):
KVM: arm64: Harden __ctxt_sys_reg() against out-of-range values
KVM: arm64: Add helpers for ESR_ELx_ERET_ISS_ERET*
KVM: arm64: Constraint PAuth support to consistent implementations
KVM: arm64: nv: Drop VCPU_HYP_CONTEXT flag
KVM: arm64: nv: Configure HCR_EL2 for FEAT_NV2
KVM: arm64: nv: Add trap forwarding for ERET and SMC
KVM: arm64: nv: Fast-track 'InHost' exception returns
KVM: arm64: nv: Honor HFGITR_EL2.ERET being set
KVM: arm64: nv: Handle HCR_EL2.{API,APK} independently
KVM: arm64: nv: Reinject PAC exceptions caused by HCR_EL2.API==0
KVM: arm64: nv: Add kvm_has_pauth() helper
KVM: arm64: nv: Add emulation for ERETAx instructions
KVM: arm64: nv: Handle ERETA[AB] instructions
KVM: arm64: nv: Advertise support for PAuth
KVM: arm64: Drop trapping of PAuth instructions/keys
arch/arm64/include/asm/esr.h | 12 ++
arch/arm64/include/asm/kvm_emulate.h | 10 --
arch/arm64/include/asm/kvm_host.h | 26 +++-
arch/arm64/include/asm/kvm_nested.h | 13 ++
arch/arm64/include/asm/kvm_ptrauth.h | 21 +++
arch/arm64/include/asm/pgtable-hwdef.h | 1 +
arch/arm64/kvm/Makefile | 1 +
arch/arm64/kvm/arm.c | 83 +++++++++-
arch/arm64/kvm/emulate-nested.c | 66 +++++---
arch/arm64/kvm/handle_exit.c | 36 ++++-
arch/arm64/kvm/hyp/include/hyp/switch.h | 62 +-------
arch/arm64/kvm/hyp/nvhe/switch.c | 4 +-
arch/arm64/kvm/hyp/vhe/switch.c | 96 +++++++++++-
arch/arm64/kvm/nested.c | 8 +-
arch/arm64/kvm/pauth.c | 196 ++++++++++++++++++++++++
15 files changed, 514 insertions(+), 121 deletions(-)
create mode 100644 arch/arm64/kvm/pauth.c
--
2.39.2
