Conversation

Notices

1. Eric Tapen (erictapen@chaos.social)'s status on Saturday, 06-Jan-2018 02:01:51 UTC Eric Tapen

   #NixOS 17.09 is patched against Meltdown.

   https://github.com/NixOS/nixpkgs/issues/33414#issuecomment-355714356

   • Hallå Kitteh likes this.
   • Hallå Kitteh repeated this.
   • Hallå Kitteh (clacke@social.heldscal.la)'s status on Saturday, 06-Jan-2018 02:17:49 UTC Hallå Kitteh

     in reply to
     @erictapen Aha, I believed before that the retpol stuff was a meltdown measure that might make KPTI unnecessary, but apparently it's a separate remedy against spectre.
     
     Good to see that people are already talking about microcode updates.
   • Hallå Kitteh (clacke@social.heldscal.la)'s status on Saturday, 06-Jan-2018 03:05:33 UTC Hallå Kitteh
     @erictapen I assumed "retpol" was for "retro trampoline", as it's some extra measure when making function calls. But you'll have to read lkml.org to be sure. I merely skimmed it yesterday and read only body text, no patches.
   • Hallå Kitteh (clacke@social.heldscal.la)'s status on Saturday, 06-Jan-2018 03:15:37 UTC Hallå Kitteh

     • Christmas Personified as a Catgirl
     @moonman @erictapen
     
     > There's a special code sequence called a retpoline that can
     > do indirect calls without speculation.
     
     https://lkml.org/lkml/2018/1/3/780