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KVM: arm64: pvtime: steal-time is only supported when configured

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Don't confuse the guest by saying steal-time is supported when
it hasn't been configured by userspace and won't work.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200804170604.42662-2-drjones@redhat.com
This commit is contained in:
Andrew Jones
2020-08-04 19:05:59 +02:00
committed by Marc Zyngier
parent 9123e3a74e
commit 38480df564
1 changed files with 2 additions and 1 deletions
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3
arch/arm64/kvm/pvtime.c
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@@ -43,7 +43,8 @@ long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu)
switch (feature) { switch (feature) {
case ARM_SMCCC_HV_PV_TIME_FEATURES: case ARM_SMCCC_HV_PV_TIME_FEATURES:
case ARM_SMCCC_HV_PV_TIME_ST: case ARM_SMCCC_HV_PV_TIME_ST:
val = SMCCC_RET_SUCCESS; if (vcpu->arch.steal.base != GPA_INVALID)
val = SMCCC_RET_SUCCESS;
break; break;
} }