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KVM: Convert intx_mask_lock to spin lock

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As kvm_notify_acked_irq calls kvm_assigned_dev_ack_irq under
rcu_read_lock, we cannot use a mutex in the latter function. Switch to a
spin lock to address this.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka
2012-03-14 11:02:11 +01:00
committed by Avi Kivity
parent 02626b6af5
commit cf9eeac463
2 changed files with 8 additions and 8 deletions
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2
include/linux/kvm_host.h
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@@ -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;
};