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由 Peter Xu 提交于
Instead of searching the device tree every time, one static variable is declared for the default system x86 IOMMU device. Signed-off-by: NPeter Xu <peterx@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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