[illumos-Developer] Available MSI(-x) interrupt limit.

[Alexey Zaytsev]

On Tue, Jun 7, 2011 at 21:53, Garrett D'Amore <garrett at nexenta.com> wrote:
> You misunderstand.  The default is 2 now.  If you want more, it take extraordinary measures.
>
> On illumos there is a more modern API that allows "cooperative" device drivers to get more, with a promise that they will yield the resources if other devices need them later.

By the way, what's the limit of MSI interrupts in a typical x86
system? And where does it come from? From my understanding, it must
come from the APIC, but I might be wrong.