diff options
| -rw-r--r-- | arch/x86/include/asm/apic.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/smp.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 11 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/es7000_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/numaq_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/summit_32.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_percpu.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 7 |
8 files changed, 27 insertions, 13 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 5e3969c36d7f..eb139eced850 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -595,8 +595,4 @@ extern int default_check_phys_apicid_present(int phys_apicid); #endif /* CONFIG_X86_LOCAL_APIC */ -#ifdef CONFIG_X86_32 -extern u8 cpu_2_logical_apicid[NR_CPUS]; -#endif - #endif /* _ASM_X86_APIC_H */ diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 4c2f63c7fc1b..dc7c46a89db7 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -38,6 +38,9 @@ static inline struct cpumask *cpu_core_mask(int cpu) DECLARE_EARLY_PER_CPU(u16, x86_cpu_to_apicid); DECLARE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid); +#if defined(CONFIG_SMP) && defined(CONFIG_X86_32) +DECLARE_EARLY_PER_CPU(int, x86_cpu_to_logical_apicid); +#endif /* Static state in head.S used to set up a CPU */ extern struct { diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 06c196d7e59c..126d5a3b00e9 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -78,6 +78,17 @@ EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_apicid); EXPORT_EARLY_PER_CPU_SYMBOL(x86_bios_cpu_apicid); #ifdef CONFIG_X86_32 + +#ifdef CONFIG_SMP +/* + * On x86_32, the mapping between cpu and logical apicid may vary + * depending on apic in use. The following early percpu variable is + * used for the mapping. This is where the behaviors of x86_64 and 32 + * actually diverge. Let's keep it ugly for now. + */ +DEFINE_EARLY_PER_CPU(int, x86_cpu_to_logical_apicid, BAD_APICID); +#endif + /* * Knob to control our willingness to enable the local APIC. * diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c index 8593582d8022..7cb73e12f784 100644 --- a/arch/x86/kernel/apic/es7000_32.c +++ b/arch/x86/kernel/apic/es7000_32.c @@ -534,7 +534,7 @@ static int es7000_cpu_to_logical_apicid(int cpu) #ifdef CONFIG_SMP if (cpu >= nr_cpu_ids) return BAD_APICID; - return cpu_2_logical_apicid[cpu]; + return early_per_cpu(x86_cpu_to_logical_apicid, cpu); #else return logical_smp_processor_id(); #endif diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c index 960f26ab5c9f..4ed90c4882e9 100644 --- a/arch/x86/kernel/apic/numaq_32.c +++ b/arch/x86/kernel/apic/numaq_32.c @@ -377,7 +377,7 @@ static inline int numaq_cpu_to_logical_apicid(int cpu) { if (cpu >= nr_cpu_ids) return BAD_APICID; - return cpu_2_logical_apicid[cpu]; + return early_per_cpu(x86_cpu_to_logical_apicid, cpu); } /* diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c index 9b419263d90d..82cfc3ea70d1 100644 --- a/arch/x86/kernel/apic/summit_32.c +++ b/arch/x86/kernel/apic/summit_32.c @@ -206,7 +206,7 @@ static void summit_init_apic_ldr(void) /* Create logical APIC IDs by counting CPUs already in cluster. */ for (count = 0, i = nr_cpu_ids; --i >= 0; ) { - lid = cpu_2_logical_apicid[i]; + lid = early_per_cpu(x86_cpu_to_logical_apicid, i); if (lid != BAD_APICID && APIC_CLUSTER(lid) == my_cluster) ++count; } @@ -247,7 +247,7 @@ static inline int summit_cpu_to_logical_apicid(int cpu) #ifdef CONFIG_SMP if (cpu >= nr_cpu_ids) return BAD_APICID; - return cpu_2_logical_apicid[cpu]; + return early_per_cpu(x86_cpu_to_logical_apicid, cpu); #else return logical_smp_processor_id(); #endif diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 002b79685f73..b5147f00f0ef 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -225,6 +225,10 @@ void __init setup_per_cpu_areas(void) per_cpu(x86_bios_cpu_apicid, cpu) = early_per_cpu_map(x86_bios_cpu_apicid, cpu); #endif +#ifdef CONFIG_X86_32 + per_cpu(x86_cpu_to_logical_apicid, cpu) = + early_per_cpu_map(x86_cpu_to_logical_apicid, cpu); +#endif #ifdef CONFIG_X86_64 per_cpu(irq_stack_ptr, cpu) = per_cpu(irq_stack_union.irq_stack, cpu) + @@ -256,6 +260,9 @@ void __init setup_per_cpu_areas(void) early_per_cpu_ptr(x86_cpu_to_apicid) = NULL; early_per_cpu_ptr(x86_bios_cpu_apicid) = NULL; #endif +#ifdef CONFIG_X86_32 + early_per_cpu_ptr(x86_cpu_to_logical_apicid) = NULL; +#endif #if defined(CONFIG_X86_64) && defined(CONFIG_NUMA) early_per_cpu_ptr(x86_cpu_to_node_map) = NULL; #endif diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 53a85baaecca..df934e46bf53 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -165,9 +165,6 @@ static void unmap_cpu_to_node(int cpu) #endif #ifdef CONFIG_X86_32 -u8 cpu_2_logical_apicid[NR_CPUS] __read_mostly = - { [0 ... NR_CPUS-1] = BAD_APICID }; - static void map_cpu_to_logical_apicid(void) { int cpu = smp_processor_id(); @@ -177,13 +174,13 @@ static void map_cpu_to_logical_apicid(void) if (!node_online(node)) node = first_online_node; - cpu_2_logical_apicid[cpu] = apicid; + early_per_cpu(x86_cpu_to_logical_apicid, cpu) = apicid; map_cpu_to_node(cpu, node); } void numa_remove_cpu(int cpu) { - cpu_2_logical_apicid[cpu] = BAD_APICID; + early_per_cpu(x86_cpu_to_logical_apicid, cpu) = BAD_APICID; unmap_cpu_to_node(cpu); } #else |