On Sun, 7 Jan 2018, Linus Torvalds wrote: > We need to fix the security problem, but we need to do it *without* > these braindead arguments that performance is somehow secondary. I surely agree, but we have gone the way of PTI without the ability of exempting individual processes exactly for one reason: Lack of time It can be done on top of the PTI implementation and it won't take ages. For spectre_v1/2 we face the same problem simply because we got informed so much ahead of time and we were all twiddling thumbs, enjoying our christmas vacation and having a good time. The exploits are out in the wild and they are observed already, so we really have to make a decision whether we want to fix that in the most obvious ways even if it hurts performance right now and then take a break from all that hell and sit down and sort the performance mess or whether we want to discuss the right way to fix it for the next 3 month and leave all doors open until the last bit of performance is squeezed out. I totally can understand the anger of those who learned all of this a few days ago and are now grasping straws to avoid the obviously coming performance hit, but its not our fault that we have to make a decision which cannot make everyone happy tomorrow. If the general sentiment is that we have to fix the performance issue first, then please let me know and I take 3 weeks of vacation right now. Thanks, tglx
