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SubjectRe: [RFC] x86_64: A real proposal for iret-less return to kernel
> Hardware-interrupts during kernel are actually fairly common under
> network-intensive loads, even outside of idle (but idle is admittedly
> likely *the* most common one). Many network loads are fairly
> kernel-intensive.

For network workloads we can arbitarily coalesce interrupts or just use NAPI
to lower the costs. No need to optimize network interrupts too much.

-Andi



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