Msi or Msi-x interrupts assign vectors from a CPU while the number of
CUPs is more than 8. __assign_irq_vector() is responsible for assigning vectors
from low-numbered CPUs by default.
If there are a lot of Msi or Msi-x interrupts, it will cause the
low-numbered CPUs out of vectors, so the subsequent interrupts will be failed
to allocate vectors from these CPUs.
What is the consideration of preferentially assigning vectors from
low-numbered CPUs? How about assigning vectors from the CPUs which have the
maximum number of unused vectors?
Thank you in advance.
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