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/*
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/*
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 * ASID management.
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 * ASID management.
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 *
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 *
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 * Because ia64 has much wider ASIDs (18-24 bits) compared to other
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 * Because ia64 has much wider ASIDs (18-24 bits) compared to other
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 * architectures (e.g. 8 bits on mips32 and 12 bits on sparc32), it is
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 * architectures (e.g. 8 bits on mips32 and 13 bits on sparc64), it is
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 * inappropriate to use same methods (i.e. genarch/mm/asid_fifo.c) for
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 * inappropriate to use same methods (i.e. genarch/mm/asid_fifo.c) for
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 * all of them.
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 * all of them.
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 *
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 *
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 * Instead, ia64 assigns ASID values from a counter that eventually
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 * Instead, ia64 assigns ASID values from a counter that eventually
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 * overflows. When this happens, the counter is reset and all TLBs are
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 * overflows. When this happens, the counter is reset and all TLBs are