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
