KVM: s390: Drop pending interrupts on guest exit
authorChristian Borntraeger <borntraeger@de.ibm.com>
Tue, 25 Mar 2014 16:09:08 +0000 (17:09 +0100)
committerChristian Borntraeger <borntraeger@de.ibm.com>
Tue, 22 Apr 2014 11:24:53 +0000 (13:24 +0200)
On hard exits (abort, sigkill) we have have some kvm_s390_interrupt_info
structures hanging around. Delete those on exit to avoid memory leaks.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
CC: stable@vger.kernel.org
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
arch/s390/kvm/interrupt.c
arch/s390/kvm/kvm-s390.c
arch/s390/kvm/kvm-s390.h

index d020c5f8eabbd7e7e2b0b01e8185152585317d85..077e4738ebdc45cfc80cf408d3210d97018bfda2 100644 (file)
@@ -1045,7 +1045,7 @@ int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
        return 0;
 }
 
-static void clear_floating_interrupts(struct kvm *kvm)
+void kvm_s390_clear_float_irqs(struct kvm *kvm)
 {
        struct kvm_s390_float_interrupt *fi;
        struct kvm_s390_interrupt_info  *n, *inti = NULL;
@@ -1391,7 +1391,7 @@ static int flic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
                break;
        case KVM_DEV_FLIC_CLEAR_IRQS:
                r = 0;
-               clear_floating_interrupts(dev->kvm);
+               kvm_s390_clear_float_irqs(dev->kvm);
                break;
        case KVM_DEV_FLIC_APF_ENABLE:
                dev->kvm->arch.gmap->pfault_enabled = 1;
index e6bbfe1a9474d25589e80c808ddc29d8341be63d..b32c42cbc7063d9298a5484b672485ea3b5f04b0 100644 (file)
@@ -471,6 +471,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
 {
        VCPU_EVENT(vcpu, 3, "%s", "free cpu");
        trace_kvm_s390_destroy_vcpu(vcpu->vcpu_id);
+       kvm_s390_clear_local_irqs(vcpu);
        kvm_clear_async_pf_completion_queue(vcpu);
        if (!kvm_is_ucontrol(vcpu->kvm)) {
                clear_bit(63 - vcpu->vcpu_id,
@@ -520,6 +521,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
        if (!kvm_is_ucontrol(kvm))
                gmap_free(kvm->arch.gmap);
        kvm_s390_destroy_adapters(kvm);
+       kvm_s390_clear_float_irqs(kvm);
 }
 
 /* Section: vcpu related */
index be8ae0d68ab6937bda1931975577d953632bc890..c93ed5fabfbc0033cc6f04e6654451022bf480e6 100644 (file)
@@ -130,6 +130,7 @@ void kvm_s390_tasklet(unsigned long parm);
 void kvm_s390_deliver_pending_interrupts(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);
+void kvm_s390_clear_float_irqs(struct kvm *kvm);
 int __must_check kvm_s390_inject_vm(struct kvm *kvm,
                                    struct kvm_s390_interrupt *s390int);
 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,