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KVM: arm64: Initialize HCRX_EL2 traps in pKVM

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Initialize and set the traps controlled by the HCRX_EL2 in pKVM.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20250314111832.4137161-3-tabba@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Fuad Tabba 2025-03-14 11:18:30 +00:00 committed by Oliver Upton
parent 44f979bf43
commit 066daa8d3b
1 changed files with 7 additions and 1 deletions
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8
arch/arm64/kvm/hyp/nvhe/pkvm.c
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@ -166,8 +166,13 @@ static int pkvm_vcpu_init_traps(struct pkvm_hyp_vcpu *hyp_vcpu)
pkvm_vcpu_reset_hcr(vcpu);
if ((!pkvm_hyp_vcpu_is_protected(hyp_vcpu)))
if ((!pkvm_hyp_vcpu_is_protected(hyp_vcpu))) {
struct kvm_vcpu *host_vcpu = hyp_vcpu->host_vcpu;
/* Trust the host for non-protected vcpu features. */
vcpu->arch.hcrx_el2 = host_vcpu->arch.hcrx_el2;
return 0;
}
ret = pkvm_check_pvm_cpu_features(vcpu);
if (ret)
@ -175,6 +180,7 @@ static int pkvm_vcpu_init_traps(struct pkvm_hyp_vcpu *hyp_vcpu)
pvm_init_traps_hcr(vcpu);
pvm_init_traps_mdcr(vcpu);
vcpu_set_hcrx(vcpu);
return 0;
}