On 11/21/2018 10:21 AM, Jiri Kosina wrote: > On Wed, 21 Nov 2018, Tim Chen wrote: > >>> Is it reverted in Linus's tree? If not, then anything that comes "later >>> on" will not apply here, right? >>> >>> I see the thread asking about this, but I got really conflicting >>> messages here, and now it's in all of the latest releases, and no >>> testing seems to have uncovered issues. Is it just a "slow down" >>> problem? >> >> Greg, >> >> It could be a big slow down in excess of 20% for some applications. >> And cross sibling Spectre v2 attack is quite hard to pull off. >> >> So till we have the accompanying patchset that only apply STIBP on processes >> that really need it instead of universally, it should be withheld from >> stable. > > Agreed; it will be trivially reintroduced with the rest, once it's ready. > It's being built on top of that patch. > Thanks. Appreciate it. Tim
