From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Borntraeger Subject: [PATCH v3 10/12] KVM: s390: activate GISA for emulated interrupts Date: Thu, 25 Jan 2018 18:06:08 +0100 Message-ID: <20180125170608.38276-5-borntraeger@de.ibm.com> References: <20180125170608.38276-1-borntraeger@de.ibm.com> Return-path: In-Reply-To: <20180125170608.38276-1-borntraeger@de.ibm.com> Sender: kvm-owner@vger.kernel.org List-Archive: List-Post: To: Cornelia Huck Cc: KVM , Christian Borntraeger , linux-s390 , Janosch Frank , David Hildenbrand , Michael Mueller List-ID: From: Michael Mueller If the AIV facility is available, a GISA will be used to manage emulated adapter interrupts. Signed-off-by: Michael Mueller Reviewed-by: Halil Pasic Reviewed-by: Christian Borntraeger Signed-off-by: Christian Borntraeger --- 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 1a561ad..ec4b7bf 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -2840,7 +2840,13 @@ 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) -- 2.9.4