6  * ASID handling idea taken from MIPS implementation.
22  *    (b) ASID (Address Space IDentifier)
33 /* Impossible ASID value, to differentiate from NO_CONTEXT. */
57 	unsigned long asid = asid_cache(cpu);  in get_mmu_context()  local
60 	if (((cpu_context(cpu, mm) ^ asid) & MMU_CONTEXT_VERSION_MASK) == 0)  in get_mmu_context()
65 	if (!(++asid & MMU_CONTEXT_ASID_MASK)) {  in get_mmu_context()
67 		 * We exhaust ASID of this version.  in get_mmu_context()
76 		if (!asid)  in get_mmu_context()
77 			asid = MMU_CONTEXT_FIRST_VERSION;  in get_mmu_context()
80 	cpu_context(cpu, mm) = asid_cache(cpu) = asid;  in get_mmu_context()
128 #define set_asid(asid)			do { } while (0)  argument
131 #define switch_and_save_asid(asid)	(0)  argument