Re: [PATCH v1 2/2] virtio-mmio: add features for virtio-mmio specification version 3

[Michael S. Tsirkin]

On Thu, Dec 26, 2019 at 09:16:19PM +0800, Liu, Jiang wrote:
> > 2) The mask and unmask control is missed
> > 
> > 
> >>  but the extension doesnât support 3) because
> >> we noticed that the Linux virtio subsystem doesnât really make use of interrupt masking/unmasking.

Linux uses masking/unmasking in order to migrate interrupts between
CPUs.

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MST