diff mbox

[GIT,PULL,09/15] KVM: s390: don't use kvm lock in interrupt injection code

Message ID 1409041707-39938-10-git-send-email-borntraeger@de.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Christian Borntraeger Aug. 26, 2014, 8:28 a.m. UTC 
From: Jens Freimann <jfrei@linux.vnet.ibm.com>

The kvm lock protects us against vcpus going away, but they only go
away when the virtual machine is shut down. We don't need this
mutex here, so let's get rid of it.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 arch/s390/kvm/interrupt.c | 2 --
 1 file changed, 2 deletions(-)
diff mbox

Patch

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index e2f6240..ba89bbb 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -991,7 +991,6 @@  int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
 	trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, s390int->type, s390int->parm,
 				   s390int->parm64, 2);
 
-	mutex_lock(&vcpu->kvm->lock);
 	li = &vcpu->arch.local_int;
 	spin_lock(&li->lock);
 	if (inti->type == KVM_S390_PROGRAM_INT)
@@ -1003,7 +1002,6 @@  int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
 		li->action_bits |= ACTION_STOP_ON_STOP;
 	atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
 	spin_unlock(&li->lock);
-	mutex_unlock(&vcpu->kvm->lock);
 	kvm_s390_vcpu_wakeup(vcpu);
 	return 0;
 }