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KVM: arm64: Restrict ACCDATA_EL1 undef to FEAT_LS64_ACCDATA being disabled

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We currently unconditionally make ACCDATA_EL1 accesses UNDEF.

As we are about to support it, restrict the UNDEF behaviour to cases
where FEAT_LS64_ACCDATA is not exposed to the guest.

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier
2024-07-03 16:41:47 +01:00
parent 2e04378f1a
commit 9308d0b1d7
1 changed files with 3 additions and 1 deletions
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4
arch/arm64/kvm/sys_regs.c
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@@ -5150,10 +5150,12 @@ void kvm_calculate_traps(struct kvm_vcpu *vcpu)
kvm->arch.fgu[HFGRTR_GROUP] = (HFGRTR_EL2_nAMAIR2_EL1 |
HFGRTR_EL2_nMAIR2_EL1 |
HFGRTR_EL2_nS2POR_EL1 |
HFGRTR_EL2_nACCDATA_EL1 |
HFGRTR_EL2_nSMPRI_EL1_MASK |
HFGRTR_EL2_nTPIDR2_EL0_MASK);
if (!kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_ACCDATA))
kvm->arch.fgu[HFGRTR_GROUP] |= HFGRTR_EL2_nACCDATA_EL1;
if (!kvm_has_feat(kvm, ID_AA64ISAR0_EL1, TLB, OS))
kvm->arch.fgu[HFGITR_GROUP] |= (HFGITR_EL2_TLBIRVAALE1OS|
HFGITR_EL2_TLBIRVALE1OS |