On Mon, Dec 21, 2009 at 04:14:54PM -0600, Joel Schopp wrote: > It's a bad interface. No matter what you choose there will be a > downside. 1) If you choose NR_CPUS, the best case of how many you > could boot without SMT, then when you boot with SMT2 or SMT4 you can > get assigned more cpus than you can boot. 2) If you choose > NR_CPUS/4, the worst case of how many you could boot, and you get a > large machine with SMT2 or SMT1 you might have said you support less > cpus than you actually do and thus not boot all the cpus. So no > matter what you choose you could be not booting cpus in some > theoretical scenario.
We're far enough through boot to determine the threading model, so you /could/ work out what SMT we're in and divide NR_CPUS by that and give that to firmware. Yours Tony _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
