diff options
Diffstat (limited to 'arch/s390/kvm/interrupt.c')
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 91 |
1 files changed, 90 insertions, 1 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 2d120fef7d90..a619ddae610d 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -251,8 +251,13 @@ static unsigned long deliverable_irqs(struct kvm_vcpu *vcpu) __clear_bit(IRQ_PEND_EXT_SERVICE, &active_mask); if (psw_mchk_disabled(vcpu)) active_mask &= ~IRQ_PEND_MCHK_MASK; + /* + * Check both floating and local interrupt's cr14 because + * bit IRQ_PEND_MCHK_REP could be set in both cases. + */ if (!(vcpu->arch.sie_block->gcr[14] & - vcpu->kvm->arch.float_int.mchk.cr14)) + (vcpu->kvm->arch.float_int.mchk.cr14 | + vcpu->arch.local_int.irq.mchk.cr14))) __clear_bit(IRQ_PEND_MCHK_REP, &active_mask); /* @@ -1876,6 +1881,28 @@ out: return ret < 0 ? ret : n; } +static int flic_ais_mode_get_all(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; + struct kvm_s390_ais_all ais; + + if (attr->attr < sizeof(ais)) + return -EINVAL; + + if (!test_kvm_facility(kvm, 72)) + return -ENOTSUPP; + + mutex_lock(&fi->ais_lock); + ais.simm = fi->simm; + ais.nimm = fi->nimm; + mutex_unlock(&fi->ais_lock); + + if (copy_to_user((void __user *)attr->addr, &ais, sizeof(ais))) + return -EFAULT; + + return 0; +} + static int flic_get_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { int r; @@ -1885,6 +1912,9 @@ static int flic_get_attr(struct kvm_device *dev, struct kvm_device_attr *attr) r = get_all_floating_irqs(dev->kvm, (u8 __user *) attr->addr, attr->attr); break; + case KVM_DEV_FLIC_AISM_ALL: + r = flic_ais_mode_get_all(dev->kvm, attr); + break; default: r = -EINVAL; } @@ -2235,6 +2265,25 @@ static int flic_inject_airq(struct kvm *kvm, struct kvm_device_attr *attr) return kvm_s390_inject_airq(kvm, adapter); } +static int flic_ais_mode_set_all(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_float_interrupt *fi = &kvm->arch.float_int; + struct kvm_s390_ais_all ais; + + if (!test_kvm_facility(kvm, 72)) + return -ENOTSUPP; + + if (copy_from_user(&ais, (void __user *)attr->addr, sizeof(ais))) + return -EFAULT; + + mutex_lock(&fi->ais_lock); + fi->simm = ais.simm; + fi->nimm = ais.nimm; + mutex_unlock(&fi->ais_lock); + + return 0; +} + static int flic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { int r = 0; @@ -2277,6 +2326,9 @@ static int flic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) case KVM_DEV_FLIC_AIRQ_INJECT: r = flic_inject_airq(dev->kvm, attr); break; + case KVM_DEV_FLIC_AISM_ALL: + r = flic_ais_mode_set_all(dev->kvm, attr); + break; default: r = -EINVAL; } @@ -2298,6 +2350,7 @@ static int flic_has_attr(struct kvm_device *dev, case KVM_DEV_FLIC_CLEAR_IO_IRQ: case KVM_DEV_FLIC_AISM: case KVM_DEV_FLIC_AIRQ_INJECT: + case KVM_DEV_FLIC_AISM_ALL: return 0; } return -ENXIO; @@ -2415,6 +2468,42 @@ static int set_adapter_int(struct kvm_kernel_irq_routing_entry *e, return ret; } +/* + * Inject the machine check to the guest. + */ +void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu, + struct mcck_volatile_info *mcck_info) +{ + struct kvm_s390_interrupt_info inti; + struct kvm_s390_irq irq; + struct kvm_s390_mchk_info *mchk; + union mci mci; + __u64 cr14 = 0; /* upper bits are not used */ + + mci.val = mcck_info->mcic; + if (mci.sr) + cr14 |= MCCK_CR14_RECOVERY_SUB_MASK; + if (mci.dg) + cr14 |= MCCK_CR14_DEGRAD_SUB_MASK; + if (mci.w) + cr14 |= MCCK_CR14_WARN_SUB_MASK; + + mchk = mci.ck ? &inti.mchk : &irq.u.mchk; + mchk->cr14 = cr14; + mchk->mcic = mcck_info->mcic; + mchk->ext_damage_code = mcck_info->ext_damage_code; + mchk->failing_storage_address = mcck_info->failing_storage_address; + if (mci.ck) { + /* Inject the floating machine check */ + inti.type = KVM_S390_MCHK; + WARN_ON_ONCE(__inject_vm(vcpu->kvm, &inti)); + } else { + /* Inject the machine check to specified vcpu */ + irq.type = KVM_S390_MCHK; + WARN_ON_ONCE(kvm_s390_inject_vcpu(vcpu, &irq)); + } +} + int kvm_set_routing_entry(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e, const struct kvm_irq_routing_entry *ue) |