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-rw-r--r--include/asm-generic/mshyperv.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index 60cdff3e2252..c1ab6a6e72b5 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -167,6 +167,8 @@ extern bool hv_root_partition;
extern u32 *hv_vp_index;
extern u32 hv_max_vp_index;
+extern u64 (*hv_read_reference_counter)(void);
+
/* Sentinel value for an uninitialized entry in hv_vp_index array */
#define VP_INVAL U32_MAX