@ -159,7 +159,7 @@ In other way, when the `CONFIG_X86_IO_APIC` kernel configuration option is set,
We remember from the previous parts, that the amount of processors we can set during Linux kernel configuration process with the `CONFIG_NR_CPUS` configuration option:
![kernel](http://oi60.tinypic.com/1zdm1dt.jpg)
![kernel](images/kernel.png)
In the first case (`CPU_VECTOR_LIMIT > IO_APIC_VECTOR_LIMIT`), the `NR_IRQS` will be `4352`, in the second case (`CPU_VECTOR_LIMIT <IO_APIC_VECTOR_LIMIT`),the`NR_IRQS`willbe`768`.Inmycasethe`NR_CPUS`is`8`asyoucanseeinthemyconfiguration,the`CPU_VECTOR_LIMIT`is`512`andthe`IO_APIC_VECTOR_LIMIT`is`4096`.So`NR_IRQS`formyconfigurationis`4352`: