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authorDavid Hildenbrand <dahi@linux.vnet.ibm.com>2014-05-06 16:11:14 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-07-21 13:22:34 +0200
commit433b9ee43c233790c0ae7c02785d6d73fd4d4455 (patch)
treedaf80b34725d28a39555e7cacb1aaac6a5b4222e /arch/s390
parent4ae3c0815fb63cbed1afcd5bacc7705c6d1b9fec (diff)
KVM: s390: remove _bh locking from start_stop_lock
The start_stop_lock is no longer acquired when in atomic context, therefore we can convert it into an ordinary spin_lock. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kvm/kvm-s390.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index a7bda180fe65..b29a03132ecb 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1478,7 +1478,7 @@ void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu)
trace_kvm_s390_vcpu_start_stop(vcpu->vcpu_id, 1);
/* Only one cpu at a time may enter/leave the STOPPED state. */
- spin_lock_bh(&vcpu->kvm->arch.start_stop_lock);
+ spin_lock(&vcpu->kvm->arch.start_stop_lock);
online_vcpus = atomic_read(&vcpu->kvm->online_vcpus);
for (i = 0; i < online_vcpus; i++) {
@@ -1504,7 +1504,7 @@ void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu)
* Let's play safe and flush the VCPU at startup.
*/
vcpu->arch.sie_block->ihcpu = 0xffff;
- spin_unlock_bh(&vcpu->kvm->arch.start_stop_lock);
+ spin_unlock(&vcpu->kvm->arch.start_stop_lock);
return;
}
@@ -1518,7 +1518,7 @@ void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu)
trace_kvm_s390_vcpu_start_stop(vcpu->vcpu_id, 0);
/* Only one cpu at a time may enter/leave the STOPPED state. */
- spin_lock_bh(&vcpu->kvm->arch.start_stop_lock);
+ spin_lock(&vcpu->kvm->arch.start_stop_lock);
online_vcpus = atomic_read(&vcpu->kvm->online_vcpus);
/* Need to lock access to action_bits to avoid a SIGP race condition */
@@ -1547,7 +1547,7 @@ void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu)
__enable_ibs_on_vcpu(started_vcpu);
}
- spin_unlock_bh(&vcpu->kvm->arch.start_stop_lock);
+ spin_unlock(&vcpu->kvm->arch.start_stop_lock);
return;
}