extern void hash__reserve_context_id(int id);
extern void __destroy_context(int context_id);
static inline void mmu_context_init(void) { }
+
+static inline int alloc_extended_context(struct mm_struct *mm,
+ unsigned long ea)
+{
+ int context_id;
+
+ int index = ea >> MAX_EA_BITS_PER_CONTEXT;
+
+ context_id = hash__alloc_context_id();
+ if (context_id < 0)
+ return context_id;
+
+ VM_WARN_ON(mm->context.extended_id[index]);
+ mm->context.extended_id[index] = context_id;
+ return context_id;
+}
+
+static inline bool need_extra_context(struct mm_struct *mm, unsigned long ea)
+{
+ int context_id;
+
+ context_id = get_ea_context(&mm->context, ea);
+ if (!context_id)
+ return true;
+ return false;
+}
+
#else
extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk);
extern unsigned long __init_new_context(void);
extern void __destroy_context(unsigned long context_id);
extern void mmu_context_init(void);
+static inline int alloc_extended_context(struct mm_struct *mm,
+ unsigned long ea)
+{
+ /* non book3s_64 should never find this called */
+ WARN_ON(1);
+ return -ENOMEM;
+}
+
+static inline bool need_extra_context(struct mm_struct *mm, unsigned long ea)
+{
+ return false;
+}
#endif
#if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE) && defined(CONFIG_PPC_RADIX_MMU)