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#include <mm/as.h>
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#include <mm/as.h>
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#include <mm/frame.h>
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#include <mm/frame.h>
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#include <arch/types.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#include <typedefs.h>
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#include <memstr.h>
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#include <memstr.h>
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#include <adt/hash_table.h>
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static pte_t *ht_create(int flags);
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static pte_t *ht_create(int flags);
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as_operations_t as_ht_operations = {
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as_operations_t as_ht_operations = {
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    .page_table_create = ht_create
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    .page_table_create = ht_create
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 * The page hash table will be created only once
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 * The page hash table will be created only once
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 * and will be shared by all address spaces.
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 * and will be shared by all address spaces.
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 *
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 *
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 * @param flags Ignored.
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 * @param flags Ignored.
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 *
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 *
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 * @return Address of global page hash table.
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 * @return Returns NULL.
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 */
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 */
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pte_t *ht_create(int flags)
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pte_t *ht_create(int flags)
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{
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{
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    if (!page_ht) {
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    if (flags & FLAG_AS_KERNEL) {
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        page_ht = (pte_t *) frame_alloc(HT_WIDTH - FRAME_WIDTH, FRAME_KA | FRAME_PANIC);
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        memsetb((__address) page_ht, HT_SIZE, 0);
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        hash_table_create(&page_ht, PAGE_HT_ENTRIES, 2, &ht_operations);
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    }
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    }
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    return page_ht;
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    return NULL;
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}
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}