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#define KA2PA(x)    ((__address) (x))
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#define KA2PA(x)    ((__address) (x))
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#define PA2KA(x)    ((__address) (x))
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#define PA2KA(x)    ((__address) (x))
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#define SET_PTL0_ADDRESS_ARCH(x)    /**< To be removed as situation permits. */
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#define SET_PTL0_ADDRESS_ARCH(x)    /**< To be removed as situation permits. */
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/** Implementation of page hash table interface. */
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#define HT_WIDTH_ARCH           20  /* 1M */
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#define HT_HASH_ARCH(page, asid)    0
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#define HT_COMPARE_ARCH(page, asid, t)  0
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#define HT_SLOT_EMPTY_ARCH(t)       1
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#define HT_INVALIDATE_SLOT_ARCH(t)
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#define HT_GET_NEXT_ARCH(t)     0
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#define HT_SET_NEXT_ARCH(t, s)
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#define HT_SET_RECORD_ARCH(t, page, asid, frame, flags)
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union page_address {
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union page_address {
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    __address address;
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    __address address;
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    struct {
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    struct {
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        __u64 vpn : 51;     /**< Virtual Page Number. */
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        __u64 vpn : 51;     /**< Virtual Page Number. */
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        unsigned offset : 13;   /**< Offset. */
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        unsigned offset : 13;   /**< Offset. */