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Line 44... Line 44...
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    tlb_arch_init();
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    tlb_arch_init();
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}
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}
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#ifdef CONFIG_SMP
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#ifdef CONFIG_SMP
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/* must be called with interrupts disabled */
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/* must be called with interrupts disabled */
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void tlb_shootdown_start(void)
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void tlb_shootdown_start(tlb_invalidate_type_t type, asid_t asid, __address page, count_t cnt)
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{
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{
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    int i;
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    int i;
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    CPU->tlb_active = 0;
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    CPU->tlb_active = 0;
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    spinlock_lock(&tlblock);
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    spinlock_lock(&tlblock);
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    /*
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     * TODO: assemble shootdown message.
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     */
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    tlb_shootdown_ipi_send();
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    tlb_shootdown_ipi_send();
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    switch (type) {
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        case TLB_INVL_ALL:
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        tlb_invalidate_all();
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        break;
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        case TLB_INVL_ASID:
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        tlb_invalidate_asid(asid);
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        break;
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        case TLB_INVL_PAGES:
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    tlb_invalidate(0); /* TODO: use valid ASID */
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        tlb_invalidate_pages(asid, page, cnt);
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        break;
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        default:
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        panic("unknown tlb_invalidate_type_t value: %d\n", type);
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        break;
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    }
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busy_wait: 
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busy_wait: 
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    for (i = 0; i<config.cpu_count; i++)
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    for (i = 0; i<config.cpu_count; i++)
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        if (cpus[i].tlb_active)
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        if (cpus[i].tlb_active)
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            goto busy_wait;
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            goto busy_wait;
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void tlb_shootdown_ipi_recv(void)
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void tlb_shootdown_ipi_recv(void)
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{
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{
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    CPU->tlb_active = 0;
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    CPU->tlb_active = 0;
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    spinlock_lock(&tlblock);
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    spinlock_lock(&tlblock);
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    spinlock_unlock(&tlblock);
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    spinlock_unlock(&tlblock);
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    tlb_invalidate(0);  /* TODO: use valid ASID */
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    tlb_invalidate_all();   /* TODO: use valid ASID */
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    CPU->tlb_active = 1;
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    CPU->tlb_active = 1;
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}
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}
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#endif /* CONFIG_SMP */
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#endif /* CONFIG_SMP */