11  * Routines to manage the allocation of task context numbers.  Task context
13  * due to context switches.  Context numbers are implemented using ia-64
38 	unsigned int next;	/* next context number to use */
40 	unsigned int max_ctx;   /* max. context value supported by all CPUs */
53  * When the context counter wraps around all TLBs need to be flushed because
54  * an old context number might have been reused. This is signalled by the
78 	nv_mm_context_t context = mm->context;  in get_mmu_context()  local
80 	if (likely(context))  in get_mmu_context()
85 	context = mm->context;  in get_mmu_context()
86 	if (context == 0) {  in get_mmu_context()
96 		mm->context = context = ia64_ctx.next++;  in get_mmu_context()
97 		__set_bit(context, ia64_ctx.bitmap);  in get_mmu_context()
102 	 * Ensure we're not starting to use "context" before any old  in get_mmu_context()
107 	return context;  in get_mmu_context()
111  * Initialize context number to some sane value.  MM is guaranteed to be a
118 	mm->context = 0;  in init_new_context()
123 reload_context (nv_mm_context_t context)  in reload_context()  argument
133 	rid = context << 3;	/* make space for encoding the region number */  in reload_context()
160 	nv_mm_context_t context;  in activate_context()  local
163 		context = get_mmu_context(mm);  in activate_context()
166 		reload_context(context);  in activate_context()
171 	} while (unlikely(context != mm->context));  in activate_context()