diff options
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
-rw-r--r-- | arch/x86/kernel/smpboot.c | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 7985c5b3f916..aa804c64b167 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c | |||
@@ -88,7 +88,7 @@ static DEFINE_PER_CPU(struct task_struct *, idle_thread_array); | |||
88 | #define get_idle_for_cpu(x) (per_cpu(idle_thread_array, x)) | 88 | #define get_idle_for_cpu(x) (per_cpu(idle_thread_array, x)) |
89 | #define set_idle_for_cpu(x, p) (per_cpu(idle_thread_array, x) = (p)) | 89 | #define set_idle_for_cpu(x, p) (per_cpu(idle_thread_array, x) = (p)) |
90 | #else | 90 | #else |
91 | struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ; | 91 | static struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ; |
92 | #define get_idle_for_cpu(x) (idle_thread_array[(x)]) | 92 | #define get_idle_for_cpu(x) (idle_thread_array[(x)]) |
93 | #define set_idle_for_cpu(x, p) (idle_thread_array[(x)] = (p)) | 93 | #define set_idle_for_cpu(x, p) (idle_thread_array[(x)] = (p)) |
94 | #endif | 94 | #endif |
@@ -123,13 +123,12 @@ EXPORT_PER_CPU_SYMBOL(cpu_info); | |||
123 | 123 | ||
124 | static atomic_t init_deasserted; | 124 | static atomic_t init_deasserted; |
125 | 125 | ||
126 | static int boot_cpu_logical_apicid; | ||
127 | 126 | ||
128 | /* representing cpus for which sibling maps can be computed */ | 127 | /* representing cpus for which sibling maps can be computed */ |
129 | static cpumask_t cpu_sibling_setup_map; | 128 | static cpumask_t cpu_sibling_setup_map; |
130 | 129 | ||
131 | /* Set if we find a B stepping CPU */ | 130 | /* Set if we find a B stepping CPU */ |
132 | int __cpuinitdata smp_b_stepping; | 131 | static int __cpuinitdata smp_b_stepping; |
133 | 132 | ||
134 | #if defined(CONFIG_NUMA) && defined(CONFIG_X86_32) | 133 | #if defined(CONFIG_NUMA) && defined(CONFIG_X86_32) |
135 | 134 | ||
@@ -165,6 +164,8 @@ static void unmap_cpu_to_node(int cpu) | |||
165 | #endif | 164 | #endif |
166 | 165 | ||
167 | #ifdef CONFIG_X86_32 | 166 | #ifdef CONFIG_X86_32 |
167 | static int boot_cpu_logical_apicid; | ||
168 | |||
168 | u8 cpu_2_logical_apicid[NR_CPUS] __read_mostly = | 169 | u8 cpu_2_logical_apicid[NR_CPUS] __read_mostly = |
169 | { [0 ... NR_CPUS-1] = BAD_APICID }; | 170 | { [0 ... NR_CPUS-1] = BAD_APICID }; |
170 | 171 | ||
@@ -210,7 +211,7 @@ static void __cpuinit smp_callin(void) | |||
210 | /* | 211 | /* |
211 | * (This works even if the APIC is not enabled.) | 212 | * (This works even if the APIC is not enabled.) |
212 | */ | 213 | */ |
213 | phys_id = GET_APIC_ID(read_apic_id()); | 214 | phys_id = read_apic_id(); |
214 | cpuid = smp_processor_id(); | 215 | cpuid = smp_processor_id(); |
215 | if (cpu_isset(cpuid, cpu_callin_map)) { | 216 | if (cpu_isset(cpuid, cpu_callin_map)) { |
216 | panic("%s: phys CPU#%d, CPU#%d already present??\n", __func__, | 217 | panic("%s: phys CPU#%d, CPU#%d already present??\n", __func__, |
@@ -550,8 +551,7 @@ static inline void __inquire_remote_apic(int apicid) | |||
550 | printk(KERN_CONT | 551 | printk(KERN_CONT |
551 | "a previous APIC delivery may have failed\n"); | 552 | "a previous APIC delivery may have failed\n"); |
552 | 553 | ||
553 | apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); | 554 | apic_icr_write(APIC_DM_REMRD | regs[i], apicid); |
554 | apic_write(APIC_ICR, APIC_DM_REMRD | regs[i]); | ||
555 | 555 | ||
556 | timeout = 0; | 556 | timeout = 0; |
557 | do { | 557 | do { |
@@ -583,11 +583,9 @@ wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip) | |||
583 | int maxlvt; | 583 | int maxlvt; |
584 | 584 | ||
585 | /* Target chip */ | 585 | /* Target chip */ |
586 | apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(logical_apicid)); | ||
587 | |||
588 | /* Boot on the stack */ | 586 | /* Boot on the stack */ |
589 | /* Kick the second */ | 587 | /* Kick the second */ |
590 | apic_write(APIC_ICR, APIC_DM_NMI | APIC_DEST_LOGICAL); | 588 | apic_icr_write(APIC_DM_NMI | APIC_DEST_LOGICAL, logical_apicid); |
591 | 589 | ||
592 | pr_debug("Waiting for send to finish...\n"); | 590 | pr_debug("Waiting for send to finish...\n"); |
593 | send_status = safe_apic_wait_icr_idle(); | 591 | send_status = safe_apic_wait_icr_idle(); |
@@ -640,13 +638,11 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) | |||
640 | /* | 638 | /* |
641 | * Turn INIT on target chip | 639 | * Turn INIT on target chip |
642 | */ | 640 | */ |
643 | apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid)); | ||
644 | |||
645 | /* | 641 | /* |
646 | * Send IPI | 642 | * Send IPI |
647 | */ | 643 | */ |
648 | apic_write(APIC_ICR, | 644 | apic_icr_write(APIC_INT_LEVELTRIG | APIC_INT_ASSERT | APIC_DM_INIT, |
649 | APIC_INT_LEVELTRIG | APIC_INT_ASSERT | APIC_DM_INIT); | 645 | phys_apicid); |
650 | 646 | ||
651 | pr_debug("Waiting for send to finish...\n"); | 647 | pr_debug("Waiting for send to finish...\n"); |
652 | send_status = safe_apic_wait_icr_idle(); | 648 | send_status = safe_apic_wait_icr_idle(); |
@@ -656,10 +652,8 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) | |||
656 | pr_debug("Deasserting INIT.\n"); | 652 | pr_debug("Deasserting INIT.\n"); |
657 | 653 | ||
658 | /* Target chip */ | 654 | /* Target chip */ |
659 | apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid)); | ||
660 | |||
661 | /* Send IPI */ | 655 | /* Send IPI */ |
662 | apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT); | 656 | apic_icr_write(APIC_INT_LEVELTRIG | APIC_DM_INIT, phys_apicid); |
663 | 657 | ||
664 | pr_debug("Waiting for send to finish...\n"); | 658 | pr_debug("Waiting for send to finish...\n"); |
665 | send_status = safe_apic_wait_icr_idle(); | 659 | send_status = safe_apic_wait_icr_idle(); |
@@ -702,11 +696,10 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) | |||
702 | */ | 696 | */ |
703 | 697 | ||
704 | /* Target chip */ | 698 | /* Target chip */ |
705 | apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid)); | ||
706 | |||
707 | /* Boot on the stack */ | 699 | /* Boot on the stack */ |
708 | /* Kick the second */ | 700 | /* Kick the second */ |
709 | apic_write(APIC_ICR, APIC_DM_STARTUP | (start_eip >> 12)); | 701 | apic_icr_write(APIC_DM_STARTUP | (start_eip >> 12), |
702 | phys_apicid); | ||
710 | 703 | ||
711 | /* | 704 | /* |
712 | * Give the other CPU some time to accept the IPI. | 705 | * Give the other CPU some time to accept the IPI. |
@@ -1175,10 +1168,17 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) | |||
1175 | * Setup boot CPU information | 1168 | * Setup boot CPU information |
1176 | */ | 1169 | */ |
1177 | smp_store_cpu_info(0); /* Final full version of the data */ | 1170 | smp_store_cpu_info(0); /* Final full version of the data */ |
1171 | #ifdef CONFIG_X86_32 | ||
1178 | boot_cpu_logical_apicid = logical_smp_processor_id(); | 1172 | boot_cpu_logical_apicid = logical_smp_processor_id(); |
1173 | #endif | ||
1179 | current_thread_info()->cpu = 0; /* needed? */ | 1174 | current_thread_info()->cpu = 0; /* needed? */ |
1180 | set_cpu_sibling_map(0); | 1175 | set_cpu_sibling_map(0); |
1181 | 1176 | ||
1177 | #ifdef CONFIG_X86_64 | ||
1178 | enable_IR_x2apic(); | ||
1179 | setup_apic_routing(); | ||
1180 | #endif | ||
1181 | |||
1182 | if (smp_sanity_check(max_cpus) < 0) { | 1182 | if (smp_sanity_check(max_cpus) < 0) { |
1183 | printk(KERN_INFO "SMP disabled\n"); | 1183 | printk(KERN_INFO "SMP disabled\n"); |
1184 | disable_smp(); | 1184 | disable_smp(); |
@@ -1186,9 +1186,9 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) | |||
1186 | } | 1186 | } |
1187 | 1187 | ||
1188 | preempt_disable(); | 1188 | preempt_disable(); |
1189 | if (GET_APIC_ID(read_apic_id()) != boot_cpu_physical_apicid) { | 1189 | if (read_apic_id() != boot_cpu_physical_apicid) { |
1190 | panic("Boot APIC ID in local APIC unexpected (%d vs %d)", | 1190 | panic("Boot APIC ID in local APIC unexpected (%d vs %d)", |
1191 | GET_APIC_ID(read_apic_id()), boot_cpu_physical_apicid); | 1191 | read_apic_id(), boot_cpu_physical_apicid); |
1192 | /* Or can we switch back to PIC here? */ | 1192 | /* Or can we switch back to PIC here? */ |
1193 | } | 1193 | } |
1194 | preempt_enable(); | 1194 | preempt_enable(); |