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SubjectRe: [PATCH 3.16 045/305] x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
On Sun, 3 Feb 2019, Ben Hutchings wrote:

> 3.16.63-rc1 review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Jiri Kosina <jkosina@suse.cz>
>
> commit dbfe2953f63c640463c630746cd5d9de8b2f63ae upstream.

You really want the whole IBPB+STIBP revamp from upstream, otherwise
you're going to get noticeable performance penalties on some workloads
with some microcodes.

--
Jiri Kosina
SUSE Labs

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