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Diffstat (limited to 'virt/kvm/arm/psci.c')
-rw-r--r--virt/kvm/arm/psci.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/virt/kvm/arm/psci.c b/virt/kvm/arm/psci.c
index c4762bef13c6..c95ab4c5a475 100644
--- a/virt/kvm/arm/psci.c
+++ b/virt/kvm/arm/psci.c
@@ -405,7 +405,7 @@ static int kvm_psci_call(struct kvm_vcpu *vcpu)
int kvm_hvc_call_handler(struct kvm_vcpu *vcpu)
{
u32 func_id = smccc_get_function(vcpu);
- u32 val = PSCI_RET_NOT_SUPPORTED;
+ u32 val = SMCCC_RET_NOT_SUPPORTED;
u32 feature;
switch (func_id) {
@@ -417,7 +417,21 @@ int kvm_hvc_call_handler(struct kvm_vcpu *vcpu)
switch(feature) {
case ARM_SMCCC_ARCH_WORKAROUND_1:
if (kvm_arm_harden_branch_predictor())
- val = 0;
+ val = SMCCC_RET_SUCCESS;
+ break;
+ case ARM_SMCCC_ARCH_WORKAROUND_2:
+ switch (kvm_arm_have_ssbd()) {
+ case KVM_SSBD_FORCE_DISABLE:
+ case KVM_SSBD_UNKNOWN:
+ break;
+ case KVM_SSBD_KERNEL:
+ val = SMCCC_RET_SUCCESS;
+ break;
+ case KVM_SSBD_FORCE_ENABLE:
+ case KVM_SSBD_MITIGATED:
+ val = SMCCC_RET_NOT_REQUIRED;
+ break;
+ }
break;
}
break;