On Jan 13, 2018, at 22:20, Emmanuel Dreyfus <manu%netbsd.org@localhost> wrote:
My understanding is that the microcode update doesn't actually *fix* anything by itself. What it does is enable an OS to more easily fix things. The kernel would need to check for the new SPEC_CTRL CPUID bit, and if present, twiddle with the new speculation control-related MSRs at the appropriate times. -- Name: Dave Huang | Mammal, mammal / their names are called / INet: khym%azeotrope.org@localhost | they raise a paw / the bat, the cat / Telegram: @DahanC | dolphin and dog / koala bear and hog -- TMBG Dahan: Hani G Y+C 42 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++ |