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Diffstat (limited to 'tools/include/linux/pfn.h')
-rw-r--r--tools/include/linux/pfn.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/include/linux/pfn.h b/tools/include/linux/pfn.h
index 7512a58189eb..f77a30d70152 100644
--- a/tools/include/linux/pfn.h
+++ b/tools/include/linux/pfn.h
@@ -7,4 +7,5 @@
#define PFN_UP(x) (((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
#define PFN_PHYS(x) ((phys_addr_t)(x) << PAGE_SHIFT)
+#define PHYS_PFN(x) ((unsigned long)((x) >> PAGE_SHIFT))
#endif