diff options
Diffstat (limited to 'arch/s390/kvm/intercept.c')
| -rw-r--r-- | arch/s390/kvm/intercept.c | 41 |
1 files changed, 27 insertions, 14 deletions
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c index 81c77ab8102e..bebd2157edd0 100644 --- a/arch/s390/kvm/intercept.c +++ b/arch/s390/kvm/intercept.c @@ -68,18 +68,27 @@ static int handle_noop(struct kvm_vcpu *vcpu) static int handle_stop(struct kvm_vcpu *vcpu) { + struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; int rc = 0; - unsigned int action_bits; + uint8_t flags, stop_pending; vcpu->stat.exit_stop_request++; - trace_kvm_s390_stop_request(vcpu->arch.local_int.action_bits); - action_bits = vcpu->arch.local_int.action_bits; + /* delay the stop if any non-stop irq is pending */ + if (kvm_s390_vcpu_has_irq(vcpu, 1)) + return 0; + + /* avoid races with the injection/SIGP STOP code */ + spin_lock(&li->lock); + flags = li->irq.stop.flags; + stop_pending = kvm_s390_is_stop_irq_pending(vcpu); + spin_unlock(&li->lock); - if (!(action_bits & ACTION_STOP_ON_STOP)) + trace_kvm_s390_stop_request(stop_pending, flags); + if (!stop_pending) return 0; - if (action_bits & ACTION_STORE_ON_STOP) { + if (flags & KVM_S390_STOP_FLAG_STORE_STATUS) { rc = kvm_s390_vcpu_store_status(vcpu, KVM_S390_STORE_STATUS_NOADDR); if (rc) @@ -279,11 +288,13 @@ static int handle_external_interrupt(struct kvm_vcpu *vcpu) irq.type = KVM_S390_INT_CPU_TIMER; break; case EXT_IRQ_EXTERNAL_CALL: - if (kvm_s390_si_ext_call_pending(vcpu)) - return 0; irq.type = KVM_S390_INT_EXTERNAL_CALL; irq.u.extcall.code = vcpu->arch.sie_block->extcpuaddr; - break; + rc = kvm_s390_inject_vcpu(vcpu, &irq); + /* ignore if another external call is already pending */ + if (rc == -EBUSY) + return 0; + return rc; default: return -EOPNOTSUPP; } @@ -307,17 +318,19 @@ static int handle_mvpg_pei(struct kvm_vcpu *vcpu) kvm_s390_get_regs_rre(vcpu, ®1, ®2); /* Make sure that the source is paged-in */ - srcaddr = kvm_s390_real_to_abs(vcpu, vcpu->run->s.regs.gprs[reg2]); - if (kvm_is_error_gpa(vcpu->kvm, srcaddr)) - return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); + rc = guest_translate_address(vcpu, vcpu->run->s.regs.gprs[reg2], + &srcaddr, 0); + if (rc) + return kvm_s390_inject_prog_cond(vcpu, rc); rc = kvm_arch_fault_in_page(vcpu, srcaddr, 0); if (rc != 0) return rc; /* Make sure that the destination is paged-in */ - dstaddr = kvm_s390_real_to_abs(vcpu, vcpu->run->s.regs.gprs[reg1]); - if (kvm_is_error_gpa(vcpu->kvm, dstaddr)) - return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); + rc = guest_translate_address(vcpu, vcpu->run->s.regs.gprs[reg1], + &dstaddr, 1); + if (rc) + return kvm_s390_inject_prog_cond(vcpu, rc); rc = kvm_arch_fault_in_page(vcpu, dstaddr, 1); if (rc != 0) return rc; |