Re: [tip:x86/pti] x86/speculation: Use Indirect Branch Prediction Barrier in context switch

[David Woodhouse]

On Tue, 2018-01-30 at 14:39 -0800, tip-bot for Tim Chen wrote:
> Thanks to the reviewers and Andy Lutomirski for the suggestion of
> using ctx_id which got rid of the problem of mm pointer recycling.

That one doesn't backport well to 4.9. Suggestions welcome.

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