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KVM: s390: fix ais handling vs cpu model
If ais is disabled via cpumodel, we must act accordingly, even if KVM_CAP_S390_AIS was enabled. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Reviewed-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
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@ -541,7 +541,6 @@ struct kvm_s390_float_interrupt {
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struct mutex ais_lock;
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u8 simm;
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u8 nimm;
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int ais_enabled;
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};
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struct kvm_hw_wp_info_arch {
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@ -2160,7 +2160,7 @@ static int modify_ais_mode(struct kvm *kvm, struct kvm_device_attr *attr)
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struct kvm_s390_ais_req req;
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int ret = 0;
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if (!fi->ais_enabled)
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if (!test_kvm_facility(kvm, 72))
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return -ENOTSUPP;
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if (copy_from_user(&req, (void __user *)attr->addr, sizeof(req)))
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@ -2204,7 +2204,7 @@ static int kvm_s390_inject_airq(struct kvm *kvm,
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};
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int ret = 0;
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if (!fi->ais_enabled || !adapter->suppressible)
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if (!test_kvm_facility(kvm, 72) || !adapter->suppressible)
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return kvm_s390_inject_vm(kvm, &s390int);
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mutex_lock(&fi->ais_lock);
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@ -558,7 +558,6 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
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} else {
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set_kvm_facility(kvm->arch.model.fac_mask, 72);
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set_kvm_facility(kvm->arch.model.fac_list, 72);
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kvm->arch.float_int.ais_enabled = 1;
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r = 0;
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}
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mutex_unlock(&kvm->lock);
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@ -1533,7 +1532,6 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
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mutex_init(&kvm->arch.float_int.ais_lock);
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kvm->arch.float_int.simm = 0;
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kvm->arch.float_int.nimm = 0;
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kvm->arch.float_int.ais_enabled = 0;
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spin_lock_init(&kvm->arch.float_int.lock);
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for (i = 0; i < FIRQ_LIST_COUNT; i++)
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INIT_LIST_HEAD(&kvm->arch.float_int.lists[i]);
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