v4.19.13 snapshot.
diff --git a/arch/x86/include/asm/simd.h b/arch/x86/include/asm/simd.h
new file mode 100644
index 0000000..a341c87
--- /dev/null
+++ b/arch/x86/include/asm/simd.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <asm/fpu/api.h>
+
+/*
+ * may_use_simd - whether it is allowable at this time to issue SIMD
+ *                instructions or access the SIMD register file
+ */
+static __must_check inline bool may_use_simd(void)
+{
+	return irq_fpu_usable();
+}