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/*
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/*
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 * Each vm_area_t structure describes one continuous area of virtual memory.
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 * Each vm_area_t structure describes one continuous area of virtual memory.
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 * In the future, it should not be difficult to support shared areas of vm.
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 * In the future, it should not be difficult to support shared areas of vm.
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 */
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 */
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struct vm_area {
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struct vm_area {
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    spinlock_t lock;
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    SPINLOCK_DECLARE(lock);
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    link_t link;
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    link_t link;
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    vm_type_t type;
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    vm_type_t type;
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    int size;
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    int size;
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    __address address;
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    __address address;
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    __address *mapping;
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    __address *mapping;
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 * pages for one or more tasks. Ranges of kernel memory pages are not
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 * pages for one or more tasks. Ranges of kernel memory pages are not
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 * supposed to figure in the list as they are shared by all tasks and
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 * supposed to figure in the list as they are shared by all tasks and
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 * set up during system initialization.
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 * set up during system initialization.
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 */
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 */
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struct vm {
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struct vm {
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    spinlock_t lock;
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    SPINLOCK_DECLARE(lock);
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    link_t vm_area_head;
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    link_t vm_area_head;
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    pte_t *ptl0;
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    pte_t *ptl0;
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    asid_t asid;
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    asid_t asid;
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};
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};
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