Steve Isaacs wrote: > When I look at the options passed to the compiler on the command line I > see the following: > > -DCONFIG_MAX_CPUS='4' -DCONFIG_MAX_PHYSICAL_CPUS='2' > -DCONFIG_LOGICAL_CPUS='1' > > Can someone help me understand what the difference between these is? I'm > working with two dual core opterons and this doesn't seem right to me. > > Steve > > >
CONFIG_MAX_CPUS : Saves space in the ACPI tables and additional stack space for maximum possible number of cores in the system. Might be better named as CONFIG_MAX_CPUs_CORES (AMD only) CONFIG_MAX_PHYSICAL_CPUS: Used to set memory SPD addresses and in coherent HyperTransport initialization (AMD only) CONFIG_LOGICAL_CPUS : This is the flag to build in multi-core support. Similar to CONFIG_MAX_CPUS but only set to 0 or 1. (Used by AMD and Intel code) Your setup: CONFIG_MAX_CPUS : 4 - 4 cores CONFIG_MAX_PHYSICAL_CPUS: 2 - 2 CPUs CONFIG_LOGICAL_CPUS : 1 - build multi core support in. Marc -- Marc Jones Senior Firmware Engineer (970) 226-9684 Office mailto:[EMAIL PROTECTED] http://www.amd.com/embeddedprocessors -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios
