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SubjectRe: question about the limited interrupt vector resource on a single cpu
On Wed, Jun 6, 2018 at 5:15 PM, Thomas Gleixner <> 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.


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