>> >>What is the problem with masking the interrupts with the PCI command >>register? I'm asking because I want to understand in which devices we >>have the problem, and if it could be fixed by firmware guys. >>What are the implications of having the quirk? >> >The way to mask the interrupt through PCI command register isn't taking effect on IBM power platform. So we have to have the >quirk so that the interrupt could be masked from interrupt controller side with function disable_irq_nosync(). > >If the interrupt can't be masked properly, we detect interrupt storm reported from host/guest when passing through those devices >via VFIO without suprise. Hi Gavin, Does it have any effect on performance. Also, can you tell in which cases interrupts need to be masked? -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
