We tsk-tsked at Windows for putting font parsing in ring 0, but Linux is determined to try and catch up.https://twitter.com/tgraf__/status/904475786622640128 …
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However, there is a possibility that userspace networking could beat this perfect-wise, though that may require userspace fs to do so.
And, as @CopperheadOS points out, this was very easy to implement (and deploy and use transparently) whereas everything-in-userspace is not.
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