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    spinlock_lock(&tlblock);
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    spinlock_lock(&tlblock);
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    tlb_shootdown_ipi_send();
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    tlb_shootdown_ipi_send();
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    tlb_invalidate(0); /* TODO: use valid ASID */
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    tlb_invalidate(0); /* TODO: use valid ASID */
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busy_wait: 
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busy_wait: 
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    for (i = 0; i<config.cpu_active; 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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}
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}
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void tlb_shootdown_finalize(void)
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void tlb_shootdown_finalize(void)