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From: Michael Mueller <mimu@linux.ibm.com>
To: linux-s390@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH v2 04/12] KVM: s390: factor out nullify_gisa()
Date: Mon, 19 Nov 2018 17:25:28 +0000	[thread overview]
Message-ID: <20181119172536.52649-5-mimu@linux.ibm.com> (raw)

This function will be used by the GIB alert handler and during
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>
---
 arch/s390/kvm/interrupt.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 2149059e9e17..56d431508435 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -2882,11 +2882,16 @@ 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) {
-		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);
 	}
 }
-- 
2.13.4

                 reply	other threads:[~2018-11-19 17:25 UTC|newest]

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