On Wed, Jun 6, 2018 at 5:15 PM, Thomas Gleixner <t...@linutronix.de> wrote: > On Wed, 6 Jun 2018, Pingfan Liu wrote: > >> For x86, there is around 200 vectors left for external device on a >> single logic cpu. >> >> Is there any case that we exhaust them in real world, and is it worth to fix? > > Exhaustion is unlikely, but how would you fix it? The vector space per CPU > is limited by hardware not software. > Playing some trick on iommu, we can use it to identify the irq requester.
Regards, Pingfan
