Re: [PATCH 4/4] hw/nvme: add MSI-x mask handlers for irqfd

[Jinhao Fan]

On 8/24/2022 7:22 PM, Klaus Jensen wrote:
> What are the implications if we drop it? That is, if we go back to your
> version that did not include this? If it doesnt impact the kvm irqchip
> logic, then I'd rather that we rip it out and leave the device without
> masking/unmasking support, keeping irqfd support as an experimental
> feature until we can sort this out.

As far as I can think of, the implication is that MSI-X 
masking/unmasking does not work when irqfd and (in the future) iothread 
is enabled. Considering that we do not find any driver making use of 
this feature, it seems OK to drop this support for now.