1 files changed, 35 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/svm.h b/arch/powerpc/include/asm/svm.h
new file mode 100644
index 000000000..7546402d7
--- /dev/null
+++ b/arch/powerpc/include/asm/svm.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * SVM helper functions
+ *
+ * Copyright 2018 Anshuman Khandual, IBM Corporation.
+ */
+
+#ifndef _ASM_POWERPC_SVM_H
+#define _ASM_POWERPC_SVM_H
+
+#ifdef CONFIG_PPC_SVM
+
+static inline bool is_secure_guest(void)
+{
+	return mfmsr() & MSR_S;
+}
+
+void __init svm_swiotlb_init(void);
+
+void dtl_cache_ctor(void *addr);
+#define get_dtl_cache_ctor()	(is_secure_guest() ? dtl_cache_ctor : NULL)
+
+#else /* CONFIG_PPC_SVM */
+
+static inline bool is_secure_guest(void)
+{
+	return false;
+}
+
+static inline void svm_swiotlb_init(void) {}
+
+#define get_dtl_cache_ctor() NULL
+
+#endif /* CONFIG_PPC_SVM */
+#endif /* _ASM_POWERPC_SVM_H */