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│ CONFIG_X86_X2APIC:
│
│ This enables x2apic support on CPUs that have this feature.
│
│ This allows 32-bit apic IDs (so it can support very large systems),
│ and accesses the local apic via MSRs not via mmio.
│
│ If you don't know what to do here, say N.
│
│ Symbol: X86_X2APIC [=y]
│ Type : bool
│ Prompt: Support x2apic
│ Location:
│ -> Processor type and features
[ 0.289191] x2apic: IRQ remapping doesn't support X2APIC mode
It looks different comparing to IRQ priorities, for whom there is rtirq. At least terms are different.
I have example of where it happens:
https://en.wikipedia.org/wiki/Input-out ... ement_unit
And some related discussion:
https://arstechnica.com/civis/viewtopic ... 0&t=899001
However, I can't find any info in context of audio optimizations or comparizons with IRQ priorities.