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@@ -878,6 +878,12 @@ int __init verify_local_APIC(void)
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*/
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reg0 = apic_read(APIC_ID);
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apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg0);
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+ apic_write(APIC_ID, reg0 ^ APIC_ID_MASK);
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+ reg1 = apic_read(APIC_ID);
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+ apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg1);
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+ apic_write(APIC_ID, reg0);
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+ if (reg1 != (reg0 ^ APIC_ID_MASK))
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+ return 0;
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/*
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* The next two are just to see if we have sane values.
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