We currently unconditionally make ACCDATA_EL1 accesses UNDEF. As we are about to support it, restrict the UNDEF behaviour to cases where FEAT_ST64_ACCDATA is not exposed to the guest. Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> --- arch/arm64/kvm/sys_regs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 7b540811aa38..39c2ee15dc0a 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -4580,10 +4580,12 @@ void kvm_calculate_traps(struct kvm_vcpu *vcpu) HFGxTR_EL2_nS2POR_EL1 | HFGxTR_EL2_nPOR_EL1 | HFGxTR_EL2_nPOR_EL0 | - HFGxTR_EL2_nACCDATA_EL1 | HFGxTR_EL2_nSMPRI_EL1_MASK | HFGxTR_EL2_nTPIDR2_EL0_MASK); + if (!kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_ACCDATA)) + kvm->arch.fgu[HFGxTR_GROUP] |= HFGxTR_EL2_nACCDATA_EL1; + if (!kvm_has_feat(kvm, ID_AA64ISAR0_EL1, TLB, OS)) kvm->arch.fgu[HFGITR_GROUP] |= (HFGITR_EL2_TLBIRVAALE1OS| HFGITR_EL2_TLBIRVALE1OS | -- 2.39.2
