diff options
| -rw-r--r-- | arch/i386/kernel/cpu/amd.c | 9 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/common.c | 5 | ||||
| -rw-r--r-- | arch/x86_64/kernel/setup.c | 25 |
3 files changed, 19 insertions, 20 deletions
diff --git a/arch/i386/kernel/cpu/amd.c b/arch/i386/kernel/cpu/amd.c index fa34a06c0d7..73aeaf5a9d4 100644 --- a/arch/i386/kernel/cpu/amd.c +++ b/arch/i386/kernel/cpu/amd.c @@ -195,7 +195,7 @@ static void __init init_amd(struct cpuinfo_x86 *c) c->x86_num_cores = 1; } -#ifdef CONFIG_X86_SMP +#ifdef CONFIG_X86_HT /* * On a AMD dual core setup the lower bits of the APIC id * distingush the cores. Assumes number of cores is a power @@ -203,8 +203,11 @@ static void __init init_amd(struct cpuinfo_x86 *c) */ if (c->x86_num_cores > 1) { int cpu = smp_processor_id(); - /* Fix up the APIC ID following AMD specifications. */ - cpu_core_id[cpu] >>= hweight32(c->x86_num_cores - 1); + unsigned bits = 0; + while ((1 << bits) < c->x86_num_cores) + bits++; + cpu_core_id[cpu] = phys_proc_id[cpu] & ((1<<bits)-1); + phys_proc_id[cpu] >>= bits; printk(KERN_INFO "CPU %d(%d) -> Core %d\n", cpu, c->x86_num_cores, cpu_core_id[cpu]); } diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 11e6e6f23fa..d199e525680 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -244,11 +244,8 @@ static void __init early_cpu_detect(void) early_intel_workaround(c); -#ifdef CONFIG_SMP #ifdef CONFIG_X86_HT - phys_proc_id[smp_processor_id()] = -#endif - cpu_core_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff; + phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff; #endif } diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index b9fd0252c27..99f038ede23 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -719,7 +719,6 @@ static void __init display_cacheinfo(struct cpuinfo_x86 *c) } } -#ifdef CONFIG_SMP /* * On a AMD dual core setup the lower bits of the APIC id distingush the cores. * Assumes number of cores is a power of two. @@ -729,16 +728,24 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) #ifdef CONFIG_SMP int cpu = smp_processor_id(); int node = 0; + unsigned bits; if (c->x86_num_cores == 1) return; - /* Fix up the APIC ID following the AMD specification. */ - cpu_core_id[cpu] >>= hweight32(c->x86_num_cores - 1); + + bits = 0; + while ((1 << bits) < c->x86_num_cores) + bits++; + + /* 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; #ifdef CONFIG_NUMA /* When an ACPI SRAT table is available use the mappings from SRAT instead. */ if (acpi_numa <= 0) { - node = cpu_core_id[cpu]; + node = phys_proc_id[cpu]; if (!node_online(node)) node = first_node(node_online_map); cpu_to_node[cpu] = node; @@ -746,18 +753,11 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) node = cpu_to_node[cpu]; } #endif - /* For now: - better than BAD_APIC_ID at least*/ - phys_proc_id[cpu] = cpu_core_id[cpu]; printk(KERN_INFO "CPU %d(%d) -> Node %d -> Core %d\n", cpu, c->x86_num_cores, node, cpu_core_id[cpu]); #endif } -#else -static void __init amd_detect_cmp(struct cpuinfo_x86 *c) -{ -} -#endif static int __init init_amd(struct cpuinfo_x86 *c) { @@ -963,8 +963,7 @@ void __init early_identify_cpu(struct cpuinfo_x86 *c) } #ifdef CONFIG_SMP - phys_proc_id[smp_processor_id()] = - cpu_core_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff; + phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff; #endif } |