arm64: use asm-generic/mmu_context.h for no-op implementations

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/include/asm/mmu_context.h

@@ -174,9 +174,9 @@ static inline void cpu_replace_ttbr1(pgd_t *pgdp)
  * Setting a reserved TTBR0 or EPD0 would work, but it all gets ugly when you
  * take CPU migration into account.
  */
-#define destroy_context(mm)		do { } while(0)
 void check_and_switch_context(struct mm_struct *mm);
 
+#define init_new_context(tsk, mm) init_new_context(tsk, mm)
 static inline int
 init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 {
@@ -208,6 +208,7 @@ static inline void update_saved_ttbr0(struct task_struct *tsk,
 }
 #endif
 
+#define enter_lazy_tlb enter_lazy_tlb
 static inline void
 enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
@@ -248,15 +249,14 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	update_saved_ttbr0(tsk, next);
 }
 
-#define deactivate_mm(tsk,mm)	do { } while (0)
-#define activate_mm(prev,next)	switch_mm(prev, next, current)
-
 void verify_cpu_asid_bits(void);
 void post_ttbr_update_workaround(void);
 
 unsigned long arm64_mm_context_get(struct mm_struct *mm);
 void arm64_mm_context_put(struct mm_struct *mm);
 
+#include <asm-generic/mmu_context.h>
+
 #endif /* !__ASSEMBLY__ */
 
 #endif /* !__ASM_MMU_CONTEXT_H */