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-rw-r--r--sys/xen/hvm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/xen/hvm.h b/sys/xen/hvm.h
index bc7518d26575..e34a552dc714 100644
--- a/sys/xen/hvm.h
+++ b/sys/xen/hvm.h
@@ -104,5 +104,6 @@ void xen_hvm_suspend(void);
void xen_hvm_resume(bool suspend_cancelled);
extern uint32_t hvm_start_flags;
+extern bool xen_evtchn_needs_ack;
#endif /* __XEN_HVM_H__ */