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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)            vhpt_hash((page), (asid))
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#define HT_COMPARE_ARCH(page, asid, t)          vhpt_compare((page), (asid), (t))
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#define HT_SLOT_EMPTY_ARCH(t)               ((t)->present.tag.tag_info.ti)
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#define HT_INVALIDATE_SLOT_ARCH(t)          (t)->present.tag.tag_info.ti = true
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#define HT_GET_NEXT_ARCH(t)             (t)->present.next
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#define HT_SET_NEXT_ARCH(t, s)              (t)->present.next = (s)
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#define HT_SET_RECORD_ARCH(t, page, asid, frame, flags) vhpt_set_record(t, page, asid, frame, flags)
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#define PPN_SHIFT           12
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#define PPN_SHIFT           12
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#define VRN_SHIFT           61
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#define VRN_SHIFT           61
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#define VRN_MASK            (7LL << VRN_SHIFT)
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#define VRN_MASK            (7LL << VRN_SHIFT)
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#define VRN_KERNEL          0
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#define VRN_KERNEL          0
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#define REGION_REGISTERS        8
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#define REGION_REGISTERS        8
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#define VHPT_WIDTH          20          /* 1M */
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#define VHPT_WIDTH          20          /* 1M */
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#define VHPT_SIZE           (1<<VHPT_WIDTH)
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#define VHPT_SIZE           (1 << VHPT_WIDTH)
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#define VHPT_BASE           page_ht     /* Must be aligned to VHPT_SIZE */
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#define VHPT_BASE           0       /* Must be aligned to VHPT_SIZE */
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#define PTA_BASE_SHIFT          15
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#define PTA_BASE_SHIFT          15
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/** Memory Attributes. */
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/** Memory Attributes. */
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#define MA_WRITEBACK    0x0
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#define MA_WRITEBACK    0x0
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    /* Word 2 */
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    /* Word 2 */
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    union vhpt_tag tag;
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    union vhpt_tag tag;
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    /* Word 3 */                                                   
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    /* Word 3 */                                                   
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    pte_t *next;            /**< Collision chain next pointer. */
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    __u64 ig3 : 64;
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} __attribute__ ((packed));
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} __attribute__ ((packed));
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struct vhpt_entry_not_present {
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struct vhpt_entry_not_present {
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    /* Word 0 */
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    /* Word 0 */
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    unsigned p : 1;
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    unsigned p : 1;
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    /* Word 2 */
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    /* Word 2 */
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    union vhpt_tag tag;
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    union vhpt_tag tag;
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    /* Word 3 */                                                   
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    /* Word 3 */                                                   
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    pte_t *next;            /**< Collision chain next pointer. */
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    __u64 ig3 : 64;
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} __attribute__ ((packed));
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} __attribute__ ((packed));
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typedef union vhpt_entry {
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typedef union vhpt_entry {
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    struct vhpt_entry_present present;
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    struct vhpt_entry_present present;
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    struct vhpt_entry_not_present not_present;
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    struct vhpt_entry_not_present not_present;
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    __u64 word[4];
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    __u64 word[4];
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} vhpt_entry;
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} vhpt_entry_t;
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struct region_register_map {
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struct region_register_map {
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    unsigned ve : 1;
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    unsigned ve : 1;
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    unsigned : 1;
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    unsigned : 1;
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    unsigned ps : 6;
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    unsigned ps : 6;
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{
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{
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    __asm__ volatile ("mov cr.pta = %0\n" : : "r" (v));
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    __asm__ volatile ("mov cr.pta = %0\n" : : "r" (v));
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}
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}
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extern void page_arch_init(void);
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extern void page_arch_init(void);
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extern pte_t *vhpt_hash(__address page, asid_t asid);
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extern vhpt_entry_t *vhpt_hash(__address page, asid_t asid);
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extern bool vhpt_compare(__address page, asid_t asid, pte_t *t);
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extern bool vhpt_compare(__address page, asid_t asid, vhpt_entry_t *v);
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extern void vhpt_set_record(pte_t *t, __address page, asid_t asid, __address frame, int flags);
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extern void vhpt_set_record(vhpt_entry_t *v, __address page, asid_t asid, __address frame, int flags);
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#endif
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#endif