On Sat, Jan 13, 2018 at 11:06:34PM -0500, Hendrik Boom wrote: > On Sun, Jan 14, 2018 at 12:17:46AM +0100, Adam Borowski wrote: > > > > And, in the recent KPTI (Meltdown, Spectre) massive workfest, I recall just > > a single remark about 32-bit x86, which pretty much said that there are no > > fixes for these issues, and mitigating them is not on anyone's priority. > > (Someone brought by some old Red Hat's 4G/4G patchset, but it wouldn't be > > enough even if forward-ported.) > > Do any 32-bit machines do speculative execution?
On x86? The almost-true rule is: if you can run Stretch/Ascii on it, it's speculative. Exceptions are first-generation Atoms, and possibly some obscure non-Intel/AMD manufacturers. P5 was in-order, but Jessie is the last release supporting it. I'm not well-versed in CPU zoology, but I believe neither Quark nor Knights Ferry support any general-purpose OS. On the other hand, the Pinebook currently sitting on my desk is 64-bit yet doesn't do speculation. Not x86, though. Meow! -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢰⠒⠀⣿⡁ Imagine there are bandits in your house, your kid is bleeding out, ⢿⡄⠘⠷⠚⠋⠀ the house is on fire, and seven big-ass trumpets are playing in the ⠈⠳⣄⠀⠀⠀⠀ sky. Your cat demands food. The priority should be obvious... _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
