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authorJens Freimann <jfrei@linux.vnet.ibm.com>2014-12-01 18:43:40 +0300
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-12-04 18:38:57 +0300
commit9185124e8754e54f3ae03ef3b3eab628aa066ef6 (patch)
tree5bbe75e2fd8cdf5972de88d1a9ec5ae62811c477 /arch/s390
parent467fc29892b8d563592d17d7128296495b6cf335 (diff)
downloadlinux-9185124e8754e54f3ae03ef3b3eab628aa066ef6.tar.xz
KVM: s390: use atomic bitops to access pending_irqs bitmap
Currently we use a mixture of atomic/non-atomic bitops and the local_int spin lock to protect the pending_irqs bitmap and interrupt payload data. We need to use atomic bitops for the pending_irqs bitmap everywhere and in addition acquire the local_int lock where interrupt data needs to be protected. Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kvm/interrupt.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 6c0d14b5fec5..86bc89a2c6e6 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -929,7 +929,7 @@ static int __inject_prog(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
li->irq.pgm = irq->u.pgm;
- __set_bit(IRQ_PEND_PROG, &li->pending_irqs);
+ set_bit(IRQ_PEND_PROG, &li->pending_irqs);
return 0;
}
@@ -995,7 +995,7 @@ int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
irq->u.extcall.code, 0, 2);
*extcall = irq->u.extcall;
- __set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs);
+ set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs);
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
return 0;
}