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This is a preparatory commit for the upcoming addition of a new hardware tag-based (MTE-based) KASAN mode. Hardware tag-based KASAN won't be using shadow memory, but will reuse these macros. Rename "SHADOW" to implementation-neutral "META". No functional changes. Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> --- Change-Id: Id2d836bf43b401bce1221cc06e745185f17b1cc
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