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KVM: s390: clear local interrupts at cpu initial reset

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Empty list of local interrupts when vcpu goes through initial reset
to provide a clean state

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Jens Freimann 2014-02-11 13:48:07 +01:00 committed by Christian Borntraeger
parent 91880d07fc
commit 2ed10cc15e
3 changed files with 16 additions and 0 deletions
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14
arch/s390/kvm/interrupt.c
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@ -509,6 +509,20 @@ enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer)
return HRTIMER_NORESTART; return HRTIMER_NORESTART;
} }
void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu)
{
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
struct kvm_s390_interrupt_info *n, *inti = NULL;
spin_lock_bh(&li->lock);
list_for_each_entry_safe(inti, n, &li->list, list) {
list_del(&inti->list);
kfree(inti);
}
atomic_set(&li->active, 0);
spin_unlock_bh(&li->lock);
}
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu) void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
{ {
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;

1
arch/s390/kvm/kvm-s390.c
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@ -395,6 +395,7 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID;
kvm_clear_async_pf_completion_queue(vcpu); kvm_clear_async_pf_completion_queue(vcpu);
atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags);
kvm_s390_clear_local_irqs(vcpu);
} }
int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)

1
arch/s390/kvm/kvm-s390.h
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@ -129,6 +129,7 @@ enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
void kvm_s390_tasklet(unsigned long parm); void kvm_s390_tasklet(unsigned long parm);
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu); void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
int __must_check kvm_s390_inject_vm(struct kvm *kvm, int __must_check kvm_s390_inject_vm(struct kvm *kvm,
struct kvm_s390_interrupt *s390int); struct kvm_s390_interrupt *s390int);
int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,