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Date:   Sun, 5 Jan 2020 05:42:49 -0500
From:   "Michael S. Tsirkin" <>
To:     "Liu, Jiang" <>
Cc:     Jason Wang <>,
        Zha Bin <>,,,,,
Subject: Re: [PATCH v1 2/2] virtio-mmio: add features for virtio-mmio
 specification version 3

On Thu, Dec 26, 2019 at 09:16:19PM +0800, Liu, Jiang wrote:
> > 2) The mask and unmask control is missed
> > 
> > 
> >>  but the extension doesn’t support 3) because
> >> we noticed that the Linux virtio subsystem doesn’t really make use of interrupt masking/unmasking.

Linux uses masking/unmasking in order to migrate interrupts between


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