Messages in this thread |  | | Date | Fri, 12 Jan 2018 16:48:14 -0600 | From | Josh Poimboeuf <> | Subject | Re: x86: Meltdown/Spectre_v2 status |
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On Fri, Jan 12, 2018 at 10:44:48PM +0100, Thomas Gleixner wrote: > Folks! > > After 10 days of frenzy following the disclosure of the mess, I'm at a > point where I think that the current set which we have in Linus tree and > the pending patches in tip:x86/pti plus one not yet applied patch (RSB on > context switch) have reached a state where the main targets are covered > even on skylake: > > 1) Meltdown is addressed > 2) Retpoline mostly covered if we have working compilers some day > 3) RSB after vmexit and on context switch (pending) > > plus the infrastructure and basic building blocks are in place. > > That's what is going to be in 4.15 (unless Linus goes berserk on the pull > requests)
And for those who are curious (I was) it looks like the BPF variant 1 fix has already been merged into Linus' tree.
> and next week should be focussed on eventual fallout, fixes and > small corrections here and there. Also to spend some time on taming the > backlog of our inboxes a bit. There is also stuff happening outside of this > which needs our attention and care. > > I want to say thanks to everyone involved and I want to apologize if I went > overboard or offended someone in the course of the discussions. > > Surely we all know there is room for improvements, but we also have reached > a state where the remaining issues are not longer to be treated in full > emergency and panic mode. We're good now, but not perfect. > > The further RSB vs. IBRS discussion has to be settled in the way we > normally work. We need full documentation, proper working micro code and > actual comparisons of the two approaches vs. performance, coverage of > attack vectors and code complexity/ugliness. > > We all are exhausted and at our limits and I think we can agree that having > the most problematic stuff covered is the right point to calm down and put > the heads back on the chickens. Take a break and have a few drinks at least > over the weekend! > > To be honest the last 10 days were more horrible than the whole PTI work > due to lack of documentation, 12 different opinions when asking 8 people > (why does this have a lawyer smell?) and an amazing amount of half baken > and hastily cobbled together crap. > > Please lets stop this and return to normality now.
Amen.
Thomas, amazing job distilling some sanity out of the pandemonium.
For future patch submissions, I would ask everyone to at least add x86@kernel.org to To: or Cc: (along with lkml). It's not only good etiquette to help the x86 maintainers, but it also gives those us not directly on Cc: a way to filter the patches into our inboxes.
-- Josh
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