+ u32 eax, ebx, ecx, edx;
+ int index_msb, tmp;
+ int cpu = smp_processor_id();
+
+ if (!cpu_has(c, X86_FEATURE_HT) || cpu_has(c, X86_FEATURE_CMP_LEGACY))
+ return;
+
+ cpuid(1, &eax, &ebx, &ecx, &edx);
+ smp_num_siblings = (ebx & 0xff0000) >> 16;
+
+ if (smp_num_siblings == 1) {
+ printk(KERN_INFO "CPU: Hyper-Threading is disabled\n");
+ } else if (smp_num_siblings > 1 ) {
+ index_msb = 31;
+
+ if (smp_num_siblings > NR_CPUS) {
+ printk(KERN_WARNING "CPU: Unsupported number of the siblings %d", smp_num_siblings);
+ smp_num_siblings = 1;
+ return;
+ }
+ tmp = smp_num_siblings;
+ while ((tmp & 0x80000000 ) == 0) {
+ tmp <<=1 ;
+ index_msb--;
+ }
+ if (smp_num_siblings & (smp_num_siblings - 1))
+ index_msb++;
+ phys_proc_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
+
+ printk(KERN_INFO "CPU: Physical Processor ID: %d\n",
+ phys_proc_id[cpu]);
+
+ smp_num_siblings = smp_num_siblings / c->x86_num_cores;
+
+ tmp = smp_num_siblings;
+ index_msb = 31;
+ while ((tmp & 0x80000000) == 0) {
+ tmp <<=1 ;
+ index_msb--;
+ }
+
+ if (smp_num_siblings & (smp_num_siblings - 1))
+ index_msb++;
+
+ cpu_core_id[cpu] = phys_pkg_id((ebx >> 24) & 0xFF, index_msb);
+
+ if (c->x86_num_cores > 1)
+ printk(KERN_INFO "CPU: Processor Core ID: %d\n",
+ cpu_core_id[cpu]);
+ }