Commit 16dd1fbb authored by Fuad Tabba's avatar Fuad Tabba Committed by Marc Zyngier

KVM: arm64: Simplify masking out MTE in feature id reg

Simplify code for hiding MTE support in feature id register when
MTE is not enabled/supported by KVM.

No functional change intended.
Signed-off-by: default avatarFuad Tabba <tabba@google.com>
Reviewed-by: default avatarAndrew Jones <drjones@redhat.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211010145636.1950948-7-tabba@google.com
parent 53868390
......@@ -1077,14 +1077,8 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR0_CSV3), (u64)vcpu->kvm->arch.pfr0_csv3);
break;
case SYS_ID_AA64PFR1_EL1:
if (!kvm_has_mte(vcpu->kvm))
val &= ~ARM64_FEATURE_MASK(ID_AA64PFR1_MTE);
if (kvm_has_mte(vcpu->kvm)) {
u64 pfr, mte;
pfr = read_sanitised_ftr_reg(SYS_ID_AA64PFR1_EL1);
mte = cpuid_feature_extract_unsigned_field(pfr, ID_AA64PFR1_MTE_SHIFT);
val |= FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64PFR1_MTE), mte);
}
break;
case SYS_ID_AA64ISAR1_EL1:
if (!vcpu_has_ptrauth(vcpu))
......
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