Messages in this thread Patch in this message | | | From | Michael Mueller <> | Subject | [PATCH v5 03/15] KVM: s390: factor out nullify_gisa() | Date | Wed, 19 Dec 2018 20:17:44 +0100 |
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This function will be used by the GISA init and the GISA clear operation. Thus it gets factored out here.
Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> --- arch/s390/kvm/interrupt.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 9a3aed608914..c3a8b2fbbcf2 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -2884,12 +2884,17 @@ int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, __u8 __user *buf, int len) return n; } +static void nullify_gisa(struct kvm_s390_gisa *gisa) +{ + memset(gisa, 0, sizeof(struct kvm_s390_gisa)); + gisa->next_alert = (u32)(u64)gisa; +} + void kvm_s390_gisa_clear(struct kvm *kvm) { if (!kvm->arch.gisa) return; - memset(kvm->arch.gisa, 0, sizeof(struct kvm_s390_gisa)); - kvm->arch.gisa->next_alert = (u32)(u64)kvm->arch.gisa; + nullify_gisa(kvm->arch.gisa); VM_EVENT(kvm, 3, "gisa 0x%pK cleared", kvm->arch.gisa); } @@ -2898,8 +2903,8 @@ void kvm_s390_gisa_init(struct kvm *kvm) if (!css_general_characteristics.aiv) return; kvm->arch.gisa = &kvm->arch.sie_page2->gisa; + nullify_gisa(kvm->arch.gisa); VM_EVENT(kvm, 3, "gisa 0x%pK initialized", kvm->arch.gisa); - kvm_s390_gisa_clear(kvm); } void kvm_s390_gisa_destroy(struct kvm *kvm) -- 2.13.4
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