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KVM: arm64: Use kvm_has_mte() in pKVM trap initialization

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When initializing HCR traps in protected mode, use kvm_has_mte() to
check for MTE support rather than kvm_has_feat(kvm, ID_AA64PFR1_EL1,
MTE, IMP).

kvm_has_mte() provides a more comprehensive check:
 - kvm_has_feat() only checks if MTE is in the guest's ID register view
   (i.e., what we advertise to the guest)
 - kvm_has_mte() checks both system_supports_mte() AND whether
   KVM_ARCH_FLAG_MTE_ENABLED is set for this VM instance

Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260122112218.531948-5-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Fuad Tabba 2026-01-22 11:22:18 +00:00 • committed by Marc Zyngier
parent 5ee8ad69da
commit 230b080623
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/hyp/nvhe/pkvm.c
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@ -82,7 +82,7 @@ static void pvm_init_traps_hcr(struct kvm_vcpu *vcpu)
if (!kvm_has_feat(kvm, ID_AA64PFR0_EL1, AMU, IMP))
val &= ~(HCR_AMVOFFEN);
if (!kvm_has_feat(kvm, ID_AA64PFR1_EL1, MTE, IMP)) {
if (!kvm_has_mte(kvm)) {
val |= HCR_TID5;
val &= ~(HCR_DCT | HCR_ATA);
}