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-rw-r--r--include/efi.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/efi.h b/include/efi.h
index 6159f34ad2..42f4e58a91 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -37,12 +37,14 @@
#define EFIAPI __attribute__((ms_abi))
#define efi_va_list __builtin_ms_va_list
#define efi_va_start __builtin_ms_va_start
+#define efi_va_copy __builtin_ms_va_copy
#define efi_va_arg __builtin_va_arg
#define efi_va_end __builtin_ms_va_end
#else
#define EFIAPI asmlinkage
#define efi_va_list va_list
#define efi_va_start va_start
+#define efi_va_copy va_copy
#define efi_va_arg va_arg
#define efi_va_end va_end
#endif /* __x86_64__ */