On Sep 16, 2011, at 8:07 AM, John Baldwin wrote: > I think the "right" way for an admin to disable HTT is to disable it in the > BIOS so that it doesn't show up in the MADT. Back when we were doing the > MPTABLE_FORCE_HTT hack having a separate tunable made sense (and it possibly > made some limited sense if you were worried about the vulnerability on running > machines). However, at this point I think the tunable should just go away and > admins should configure HTT on or off in the BIOS like they would for any > other OS. > > -- > John Baldwin
To do it this way (leave SMT enabled in the BIOS but disabled in the OS) makes it easier to release a future upgrade to take advantage of those cores. Once systems are distributed to customer sites it becomes very difficult to do BIOS maintenance. -Andrew -------------------------------------------------- Andrew Boyer abo...@averesystems.com _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
