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FWIW, > I plan to take this into 6.12. > > [1] https://lore.kernel.org/r/20240813100540.1955263-1-maz@kernel.org > > Joey Gouly (1): > KVM: arm64: Make kvm_at() take an OP_AT_* > Have you tested/tried NV with host/L0 booted with GICv4.x enabled? We do see L2 boot hang and I don't have much debug info at the moment. > Marc Zyngier (17): > arm64: Add missing APTable and TCR_ELx.HPD masks > arm64: Add PAR_EL1 field description > arm64: Add system register encoding for PSTATE.PAN > arm64: Add ESR_ELx_FSC_ADDRSZ_L() helper > KVM: arm64: nv: Enforce S2 alignment when contiguous bit is set > KVM: arm64: nv: Turn upper_attr for S2 walk into the full descriptor > KVM: arm64: nv: Honor absence of FEAT_PAN2 > KVM: arm64: nv: Add basic emulation of AT S1E{0,1}{R,W} > KVM: arm64: nv: Add basic emulation of AT S1E1{R,W}P > KVM: arm64: nv: Add basic emulation of AT S1E2{R,W} > KVM: arm64: nv: Add emulation of AT S12E{0,1}{R,W} > KVM: arm64: nv: Make ps_to_output_size() generally available > KVM: arm64: nv: Add SW walker for AT S1 emulation > KVM: arm64: nv: Sanitise SCTLR_EL1.EPAN according to VM configuration > KVM: arm64: nv: Make AT+PAN instructions aware of FEAT_PAN3 > KVM: arm64: nv: Plumb handling of AT S1* traps from EL2 > KVM: arm64: nv: Add support for FEAT_ATS1A > > arch/arm64/include/asm/esr.h | 5 +- > arch/arm64/include/asm/kvm_arm.h | 1 + > arch/arm64/include/asm/kvm_asm.h | 6 +- > arch/arm64/include/asm/kvm_nested.h | 40 +- > arch/arm64/include/asm/pgtable-hwdef.h | 9 + > arch/arm64/include/asm/sysreg.h | 22 + > arch/arm64/kvm/Makefile | 2 +- > arch/arm64/kvm/at.c | 1101 ++++++++++++++++++++++++ > arch/arm64/kvm/emulate-nested.c | 2 + > arch/arm64/kvm/hyp/include/hyp/fault.h | 2 +- > arch/arm64/kvm/nested.c | 41 +- > arch/arm64/kvm/sys_regs.c | 60 ++ > 12 files changed, 1259 insertions(+), 32 deletions(-) > create mode 100644 arch/arm64/kvm/at.c > -- Thanks, Ganapat/GK