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-rw-r--r--include/linux/kvm_host.h2
-rw-r--r--virt/kvm/assigned-dev.c14
2 files changed, 8 insertions, 8 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ec171c1..40bb1c6 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -556,7 +556,7 @@ struct kvm_assigned_dev_kernel {
struct pci_dev *dev;
struct kvm *kvm;
spinlock_t intx_lock;
- struct mutex intx_mask_lock;
+ spinlock_t intx_mask_lock;
char irq_name[32];
struct pci_saved_state *pci_saved_state;
};
diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c
index 08e0571..01f572c 100644
--- a/virt/kvm/assigned-dev.c
+++ b/virt/kvm/assigned-dev.c
@@ -77,11 +77,11 @@ kvm_assigned_dev_raise_guest_irq(struct kvm_assigned_dev_kernel *assigned_dev,
{
if (unlikely(assigned_dev->irq_requested_type &
KVM_DEV_IRQ_GUEST_INTX)) {
- mutex_lock(&assigned_dev->intx_mask_lock);
+ spin_lock(&assigned_dev->intx_mask_lock);
if (!(assigned_dev->flags & KVM_DEV_ASSIGN_MASK_INTX))
kvm_set_irq(assigned_dev->kvm,
assigned_dev->irq_source_id, vector, 1);
- mutex_unlock(&assigned_dev->intx_mask_lock);
+ spin_unlock(&assigned_dev->intx_mask_lock);
} else
kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,
vector, 1);
@@ -141,7 +141,7 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
kvm_set_irq(dev->kvm, dev->irq_source_id, dev->guest_irq, 0);
- mutex_lock(&dev->intx_mask_lock);
+ spin_lock(&dev->intx_mask_lock);
if (!(dev->flags & KVM_DEV_ASSIGN_MASK_INTX)) {
bool reassert = false;
@@ -165,7 +165,7 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
dev->guest_irq, 1);
}
- mutex_unlock(&dev->intx_mask_lock);
+ spin_unlock(&dev->intx_mask_lock);
}
static void deassign_guest_irq(struct kvm *kvm,
@@ -707,7 +707,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
match->flags = assigned_dev->flags;
match->dev = dev;
spin_lock_init(&match->intx_lock);
- mutex_init(&match->intx_mask_lock);
+ spin_lock_init(&match->intx_mask_lock);
match->irq_source_id = -1;
match->kvm = kvm;
match->ack_notifier.irq_acked = kvm_assigned_dev_ack_irq;
@@ -868,7 +868,7 @@ static int kvm_vm_ioctl_set_pci_irq_mask(struct kvm *kvm,
goto out;
}
- mutex_lock(&match->intx_mask_lock);
+ spin_lock(&match->intx_mask_lock);
match->flags &= ~KVM_DEV_ASSIGN_MASK_INTX;
match->flags |= assigned_dev->flags & KVM_DEV_ASSIGN_MASK_INTX;
@@ -895,7 +895,7 @@ static int kvm_vm_ioctl_set_pci_irq_mask(struct kvm *kvm,
}
}
- mutex_unlock(&match->intx_mask_lock);
+ spin_unlock(&match->intx_mask_lock);
out:
mutex_unlock(&kvm->lock);
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