On 12/04/2013 04:02 PM, Bruce Dubbs wrote: > Ken Moffat wrote: >> Powernow is for cpufreq (a good thing to use, IMHO, but not >> mentioned in LFS) and not used anymore for K10 and newer CPUs (the >> support is now in acpi-cpufreq). From memory, the initial K10 was >> the athlon64xII. My git-foo isn't good enough to identify which >> release that happened in, but the indications are that it was well >> before 3.10. >> >> SMP is the key. >> >> If Dan is building only for that machine (and doesn't intend to use >> the system to boot any replacement machine when the time comes) then >> optimizing for the specific processor family, i.e. AMD x86_64 >> (Opteron/Athlon/Hammer/K8 : this is CONFIG_MK8 but works on K10 ;-) >> might gain a little, as might Multi-Core Scheduler support. > I hate to mention the obvious, but is CONFIG_X86_64_SMP set in the > kernel? Other possibilities: > > CONFIG_USE_GENERIC_SMP_HELPERS=y > CONFIG_GENERIC_SMP_IDLE_THREAD=y > CONFIG_SMP=y > CONFIG_HAVE_TEXT_POKE_SMP=y > > Mentioning the obvious always helps--the old "forest and trees." In this case, however, even with <cat .config | grep X86_64_SMP> that particular option doesn't seem to be present. But, I discovered much to my embarassment that CONFIG_SMP was not set. Rats.
Ken, are K10 and A10 the same? I suppose I could set it and if I didn't need it wouldn't hurt anything. I also suppose that I could "google around" to see if they are separate families or are somehow related. Some of the documentation I found today referred to "increased support" for AMD processors, including A10. I don't know how to go to 'kernel.org' and slog through the patches. I wouldn't even know where to start. I was, however, really distracted by my thunderbird build, which was ultimately successful, and maybe I'll be able to search more systematically tomorrow. But someone could just tell me so I wouldn't have to look. 8-) Dan -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
