On Wed, Oct 21, 2020 at 06:09:28PM +0200, Uros Bizjak wrote: > On Wed, Oct 21, 2020 at 4:45 PM Qing Zhao <qing.z...@oracle.com> wrote: > > Looks like it’s very complicate to use the st/mm register set correctly, So, > > I assume that this set of registers might be very hard to be used by the > > attacker correctly. > > Right? > > Correct, but "very hard to be used" depends on how determined the attacker is.
Not only that, but the attacker only needs to get it right once, not for every function (and not even for every program for that matter). Segher
