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-rw-r--r--mm/kasan/kasan.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 3b349a6e799d..bc4f28156157 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -243,6 +243,32 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag)
#define reset_tag(addr) ((void *)arch_kasan_reset_tag(addr))
#define get_tag(addr) arch_kasan_get_tag(addr)
+#ifdef CONFIG_KASAN_HW_TAGS
+
+#ifndef arch_enable_tagging
+#define arch_enable_tagging()
+#endif
+#ifndef arch_init_tags
+#define arch_init_tags(max_tag)
+#endif
+#ifndef arch_get_random_tag
+#define arch_get_random_tag() (0xFF)
+#endif
+#ifndef arch_get_mem_tag
+#define arch_get_mem_tag(addr) (0xFF)
+#endif
+#ifndef arch_set_mem_tag_range
+#define arch_set_mem_tag_range(addr, size, tag) ((void *)(addr))
+#endif
+
+#define hw_enable_tagging() arch_enable_tagging()
+#define hw_init_tags(max_tag) arch_init_tags(max_tag)
+#define hw_get_random_tag() arch_get_random_tag()
+#define hw_get_mem_tag(addr) arch_get_mem_tag(addr)
+#define hw_set_mem_tag_range(addr, size, tag) arch_set_mem_tag_range((addr), (size), (tag))
+
+#endif /* CONFIG_KASAN_HW_TAGS */
+
/*
* Exported functions for interfaces called from assembly or from generated
* code. Declarations here to avoid warning about missing declarations.