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authorJens Freimann <jfrei@linux.vnet.ibm.com>2014-08-11 15:39:43 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-08-25 14:35:56 +0200
commit331cbc277ec4ae5827b9ca538d9b5469fdca0947 (patch)
tree21007a8c70159b2f76428251910373e1f63f6d3a /arch
parent7939503147f89f0799ddc89afec2aeae57dd7e2c (diff)
downloadlinux-331cbc277ec4ae5827b9ca538d9b5469fdca0947.tar.bz2
KVM: s390: don't use kvm lock in interrupt injection code
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kvm/interrupt.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index e2f624058457..ba89bbbd2ed5 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;
}