diff options
Diffstat (limited to 'arch/i386/kernel/mpparse.c')
| -rw-r--r-- | arch/i386/kernel/mpparse.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index d7cede83ba2e..0102f3d50e57 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -38,6 +38,12 @@ int smp_found_config; unsigned int __initdata maxcpus = NR_CPUS; +#ifdef CONFIG_HOTPLUG_CPU +#define CPU_HOTPLUG_ENABLED (1) +#else +#define CPU_HOTPLUG_ENABLED (0) +#endif + /* * Various Linux-internal data structures created from the * MP-table. @@ -219,14 +225,18 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m) cpu_set(num_processors, cpu_possible_map); num_processors++; - if ((num_processors > 8) && - ((APIC_XAPIC(ver) && - (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)) || - (boot_cpu_data.x86_vendor == X86_VENDOR_AMD))) - def_to_bigsmp = 1; - else - def_to_bigsmp = 0; - + if (CPU_HOTPLUG_ENABLED || (num_processors > 8)) { + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_INTEL: + if (!APIC_XAPIC(ver)) { + def_to_bigsmp = 0; + break; + } + /* If P4 and above fall through */ + case X86_VENDOR_AMD: + def_to_bigsmp = 1; + } + } bios_cpu_apicid[num_processors - 1] = m->mpc_apicid; } |