Messages in this thread |  | | Date | Thu, 25 Jan 2018 18:16:16 +0100 | From | Greg Kroah-Hartman <> | Subject | Re: [RFC 09/10] x86/enter: Create macros to restrict/unrestrict Indirect Branch Speculation |
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On Thu, Jan 25, 2018 at 05:19:04PM +0100, Mason wrote: > On 23/01/2018 10:30, David Woodhouse wrote: > > > Skylake takes predictions from the generic branch target buffer when > > the RSB underflows. > > Adding LAKML. > > AFAIU, some ARM Cortex cores have the same optimization. > (A9 maybe, A17 probably, some recent 64-bit cores) > > Are there software work-arounds for Spectre planned for arm32 and arm64?
Yes, I think they are currently burried in one of the arm64 trees, and they have been posted to the mailing list a few times in the past.
thanks,
greg k-h
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