Messages in this thread | | | Subject | Re: [PATCH v5 2/2] x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation | From | Tom Lendacky <> | Date | Wed, 12 Sep 2018 12:16:16 -0500 |
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On 09/11/2018 04:16 PM, Thomas Gleixner wrote: > On Tue, 11 Sep 2018, Tim Chen wrote: >> On 09/10/2018 04:46 AM, Jiri Kosina wrote: >>> Nah, IBPB is actuall there, sorry. So I'll add reporting of STIBP + fixup >>> the missing reporting of RSB_CTXSW for v6. >>> >> >> I anticipate that STIBP could affect workloads with a lot of indirect >> branches (see previous discussion with Andrea). We should have a >> knob for people to opt in or opt out of STIBP. > > Feel free to send a patch to that effect.
Tim, are you planning on sending a patch for this? If so, what type of opt in/out are you thinking about, something similar to SSBD?
Thanks, Tom
> > Thanks, > > tglx >
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