KVM: s390: refactor interrupt injection code
In preparation for the rework of the local interrupt injection code, factor out injection routines from kvm_s390_inject_vcpu(). Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Jens Freimann
Christian Borntraeger
parent
9fcf93b5de
commit
0146a7b0b0
1 changed files with 167 additions and 54 deletions
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@ -719,6 +719,16 @@ int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
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return rc;
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}
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static int __inject_prog_irq(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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list_add(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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return 0;
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}
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int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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@ -746,6 +756,7 @@ int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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struct kvm_s390_interrupt_info *inti;
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int rc;
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inti = kzalloc(sizeof(*inti), GFP_KERNEL);
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if (!inti)
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@ -759,10 +770,133 @@ int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
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inti->type = KVM_S390_PROGRAM_INT;
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memcpy(&inti->pgm, pgm_info, sizeof(inti->pgm));
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spin_lock(&li->lock);
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list_add(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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rc = __inject_prog_irq(vcpu, inti);
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BUG_ON(waitqueue_active(li->wq));
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spin_unlock(&li->lock);
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return rc;
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}
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static int __inject_pfault_init(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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inti->ext.ext_params2 = s390int->parm64;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
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return 0;
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}
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static int __inject_extcall(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 3, "inject: external call source-cpu:%u",
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s390int->parm);
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if (s390int->parm & 0xffff0000)
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return -EINVAL;
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inti->extcall.code = s390int->parm;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
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return 0;
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}
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static int __inject_set_prefix(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 3, "inject: set prefix to %x (from user)",
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s390int->parm);
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inti->prefix.address = s390int->parm;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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return 0;
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}
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static int __inject_sigp_stop(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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li->action_bits |= ACTION_STOP_ON_STOP;
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return 0;
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}
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static int __inject_sigp_restart(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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return 0;
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}
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static int __inject_sigp_emergency(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 3, "inject: emergency %u\n", s390int->parm);
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if (s390int->parm & 0xffff0000)
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return -EINVAL;
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inti->emerg.code = s390int->parm;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
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return 0;
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}
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static int __inject_mchk(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 5, "inject: machine check parm64:%llx",
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s390int->parm64);
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inti->mchk.mcic = s390int->parm64;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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return 0;
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}
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static int __inject_ckc(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
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return 0;
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}
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static int __inject_cpu_timer(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int,
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struct kvm_s390_interrupt_info *inti)
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{
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
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return 0;
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}
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@ -933,89 +1067,68 @@ void kvm_s390_reinject_io_int(struct kvm *kvm,
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int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
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struct kvm_s390_interrupt *s390int)
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{
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struct kvm_s390_local_interrupt *li;
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struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
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struct kvm_s390_interrupt_info *inti;
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int rc;
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inti = kzalloc(sizeof(*inti), GFP_KERNEL);
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if (!inti)
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return -ENOMEM;
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switch (s390int->type) {
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inti->type = s390int->type;
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trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, s390int->type,
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s390int->parm, 0, 2);
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spin_lock(&li->lock);
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switch (inti->type) {
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case KVM_S390_PROGRAM_INT:
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if (s390int->parm & 0xffff0000) {
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kfree(inti);
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return -EINVAL;
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}
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inti->type = s390int->type;
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inti->pgm.code = s390int->parm;
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VCPU_EVENT(vcpu, 3, "inject: program check %d (from user)",
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s390int->parm);
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inti->pgm.code = s390int->parm;
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if (s390int->parm & 0xffff0000)
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rc = -EINVAL;
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else
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rc = __inject_prog_irq(vcpu, inti);
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break;
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case KVM_S390_SIGP_SET_PREFIX:
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inti->prefix.address = s390int->parm;
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inti->type = s390int->type;
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VCPU_EVENT(vcpu, 3, "inject: set prefix to %x (from user)",
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s390int->parm);
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rc = __inject_set_prefix(vcpu, s390int, inti);
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break;
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case KVM_S390_SIGP_STOP:
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rc = __inject_sigp_stop(vcpu, s390int, inti);
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break;
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case KVM_S390_RESTART:
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rc = __inject_sigp_restart(vcpu, s390int, inti);
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break;
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case KVM_S390_INT_CLOCK_COMP:
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rc = __inject_ckc(vcpu, s390int, inti);
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break;
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case KVM_S390_INT_CPU_TIMER:
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VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
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inti->type = s390int->type;
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rc = __inject_cpu_timer(vcpu, s390int, inti);
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break;
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case KVM_S390_INT_EXTERNAL_CALL:
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if (s390int->parm & 0xffff0000) {
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kfree(inti);
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return -EINVAL;
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}
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VCPU_EVENT(vcpu, 3, "inject: external call source-cpu:%u",
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s390int->parm);
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inti->type = s390int->type;
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inti->extcall.code = s390int->parm;
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rc = __inject_extcall(vcpu, s390int, inti);
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break;
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case KVM_S390_INT_EMERGENCY:
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if (s390int->parm & 0xffff0000) {
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kfree(inti);
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return -EINVAL;
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}
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VCPU_EVENT(vcpu, 3, "inject: emergency %u\n", s390int->parm);
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inti->type = s390int->type;
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inti->emerg.code = s390int->parm;
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rc = __inject_sigp_emergency(vcpu, s390int, inti);
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break;
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case KVM_S390_MCHK:
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VCPU_EVENT(vcpu, 5, "inject: machine check parm64:%llx",
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s390int->parm64);
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inti->type = s390int->type;
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inti->mchk.mcic = s390int->parm64;
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rc = __inject_mchk(vcpu, s390int, inti);
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break;
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case KVM_S390_INT_PFAULT_INIT:
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inti->type = s390int->type;
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inti->ext.ext_params2 = s390int->parm64;
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rc = __inject_pfault_init(vcpu, s390int, inti);
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break;
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case KVM_S390_INT_VIRTIO:
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case KVM_S390_INT_SERVICE:
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case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
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default:
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kfree(inti);
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return -EINVAL;
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rc = -EINVAL;
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}
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trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, s390int->type, s390int->parm,
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s390int->parm64, 2);
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li = &vcpu->arch.local_int;
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spin_lock(&li->lock);
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if (inti->type == KVM_S390_PROGRAM_INT)
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list_add(&inti->list, &li->list);
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else
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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if (inti->type == KVM_S390_SIGP_STOP)
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li->action_bits |= ACTION_STOP_ON_STOP;
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atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
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spin_unlock(&li->lock);
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kvm_s390_vcpu_wakeup(vcpu);
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return 0;
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if (!rc)
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kvm_s390_vcpu_wakeup(vcpu);
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else
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kfree(inti);
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return rc;
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}
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void kvm_s390_clear_float_irqs(struct kvm *kvm)
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