RE: 2.6.12-rc5 is broken in nvidia Ck804 Opteron MB/with dual cor e dual way

[YhLu <YhLu@tyan.com>]

andi,

in arch/x86_64/kernel/smboot.c, function detect_siblings(),

because smp_num_siblings is always =1,  so several lines can be removed.

        for_each_online_cpu (cpu) {
                struct cpuinfo_x86 *c = cpu_data + cpu;
*R*                int siblings = 0;
                int i;
*R*                if (smp_num_siblings > 1) {
*R*                        for_each_online_cpu (i) {
*R*                                if (cpu_core_id[cpu] == cpu_core_id[i]) {
*R*                                        siblings++;
*R*                                        cpu_set(i, cpu_sibling_map[cpu]);
*R*                                }
*R*                        }
*R*                } else {
*R*                      siblings++;
                        cpu_set(cpu, cpu_sibling_map[cpu]);
*R*                }


 *R*               if (siblings != smp_num_siblings) {
 *R*                       printk(KERN_WARNING
 *R*              "WARNING: %d siblings found for CPU%d, should be %d\n",
 *R*                              siblings, cpu, smp_num_siblings);
 *R*                       smp_num_siblings = siblings;
 *R*               }

Also I found the workaround for hang on second node is
adding one line in setup.c
        /* Low order bits define the core id (index of core in socket) */
        cpu_core_id[cpu] = phys_proc_id[cpu] & ((1 << bits)-1);
        /* Convert the APIC ID into the socket ID */
        phys_proc_id[cpu] >>= bits;
+        printk(KERN_INFO "  CPU %d(%d)  phys_proc_id %d  Core %d\n", 
+               cpu, c->x86_num_cores, phys_proc_id[cpu], cpu_core_id[cpu]);

My compile environment SUSE 9.2 gcc version is 3.3.3???

YH

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