Re: [PATCH 3.16 045/305] x86/speculation: Apply IBPB more strictly to avoid cross-process data leak

[Jiri Kosina]

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@xxxxxxx>
> 
> 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