summaryrefslogtreecommitdiff
path: root/arch/s390/kvm/intercept.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/kvm/intercept.c')
-rw-r--r--arch/s390/kvm/intercept.c41
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, &reg1, &reg2);
/* 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;