Re: [PATCH v4 4/4] PCI: Limit pci_alloc_irq_vectors() to housekeeping CPUs

[Peter Zijlstra]

On Mon, Oct 19, 2020 at 11:00:05AM -0300, Marcelo Tosatti wrote:
> > So I think it is important to figure out what that driver really wants
> > in the nohz_full case. If it wants to retain N interrupts per CPU, and
> > only reduce the number of CPUs, the proposed interface is wrong.
> 
> It wants N interrupts per non-isolated (AKA housekeeping) CPU.

Then the patch is wrong and the interface needs changing from @min_vecs,
@max_vecs to something that expresses the N*nr_cpus relation.