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Rev 548 Rev 566
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#include <debug.h>
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#include <debug.h>
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#include <memstr.h>
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#include <memstr.h>
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#include <print.h>
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#include <print.h>
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__address bootstrap_dba;
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static __address bootstrap_dba;
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void page_arch_init(void)
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void page_arch_init(void)
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{
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{
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    __address dba;
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    __address dba;
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    __address cur;
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    __address cur;
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        trap_register(14, page_fault);
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        trap_register(14, page_fault);
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        write_cr3(KA2PA(dba));
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        write_cr3(KA2PA(dba));
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    }
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    }
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    else {
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    else {
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        /*
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         * Application processors need to create their own view of the
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         * virtual address space. Because of that, each AP copies
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         * already-initialized paging information from the bootstrap
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         * processor and adjusts it to fulfill its needs.
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         */
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        dba = frame_alloc(FRAME_KA | FRAME_PANIC, ONE_FRAME);
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        memcpy((void *)dba, (void *)bootstrap_dba , PAGE_SIZE);
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        write_cr3(KA2PA(dba));
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        write_cr3(KA2PA(bootstrap_dba));
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    }
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    }
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    paging_on();
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    paging_on();
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}
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}