From: Michael Mueller <mimu@xxxxxxxxxxxxxxxxxx>
If the AIV facility is available, a GISA will be used to manage emulated
adapter interrupts.
Signed-off-by: Michael Mueller <mimu@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Halil Pasic <pasic@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
---
arch/s390/kvm/interrupt.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index f2dc86884ea42..488ecc7ea2a18 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -2842,7 +2842,13 @@ void kvm_s390_gisa_clear(struct kvm *kvm)
void kvm_s390_gisa_init(struct kvm *kvm)
{
- /* not implemented yet */
+ if (!css_general_characteristics.aiv)
+ kvm->arch.gisa = NULL;
+ else {
+ kvm->arch.gisa = &kvm->arch.sie_page2->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
