};
typedef struct {
- mm_context_id_t id;
+ union {
+ /*
+ * We use id as the PIDR content for radix. On hash we can use
+ * more than one id. The extended ids are used when we start
+ * having address above 512TB. We allocate one extended id
+ * for each 512TB. The new id is then used with the 49 bit
+ * EA to build a new VA. We always use ESID_BITS_1T_MASK bits
+ * from EA and new context ids to build the new VAs.
+ */
+ mm_context_id_t id;
+ mm_context_id_t extended_id[TASK_SIZE_USER64/TASK_CONTEXT_SIZE];
+ };
u16 user_psize; /* page size index */
/* Number of bits in the mm_cpumask */
static inline void radix_init_pseries(void) { };
#endif
+static inline int get_ea_context(mm_context_t *ctx, unsigned long ea)
+{
+ int index = ea >> MAX_EA_BITS_PER_CONTEXT;
+
+ if (likely(index < ARRAY_SIZE(ctx->extended_id)))
+ return ctx->extended_id[index];
+
+ /* should never happen */
+ WARN_ON(1);
+ return 0;
+}
+
+static inline unsigned long get_user_vsid(mm_context_t *ctx,
+ unsigned long ea, int ssize)
+{
+ unsigned long context = get_ea_context(ctx, ea);
+
+ return get_vsid(context, ea, ssize);
+}
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_BOOK3S_64_MMU_H_ */