Merge git://git.infradead.org/~dedekind/ubi-2.6

[linux-2.6] / arch / x86 / kernel / apic_64.c

diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 7dd6250aaf6c8280eb987c2b0d43f0671900aa4b..9e8e5c050c55f7fa9418c0621c17030f9fea3b54 100644 (file)
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -85,6 +85,12 @@ static DEFINE_PER_CPU(struct clock_event_device, lapic_events);
 
 static unsigned long apic_phys;
 
+unsigned long mp_lapic_addr;
+
+DEFINE_PER_CPU(u16, x86_bios_cpu_apicid) = BAD_APICID;
+EXPORT_PER_CPU_SYMBOL(x86_bios_cpu_apicid);
+
+unsigned int __cpuinitdata maxcpus = NR_CPUS;
 /*
  * Get the LAPIC version
  */
@@ -643,10 +649,10 @@ int __init verify_local_APIC(void)
        /*
         * The ID register is read/write in a real APIC.
         */
-       reg0 = apic_read(APIC_ID);
+       reg0 = read_apic_id();
        apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg0);
        apic_write(APIC_ID, reg0 ^ APIC_ID_MASK);
-       reg1 = apic_read(APIC_ID);
+       reg1 = read_apic_id();
        apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg1);
        apic_write(APIC_ID, reg0);
        if (reg1 != (reg0 ^ APIC_ID_MASK))
@@ -731,6 +737,7 @@ void __cpuinit setup_local_APIC(void)
        unsigned int value;
        int i, j;
 
+       preempt_disable();
        value = apic_read(APIC_LVR);
 
        BUILD_BUG_ON((SPURIOUS_APIC_VECTOR & 0x0f) != 0x0f);
@@ -824,6 +831,7 @@ void __cpuinit setup_local_APIC(void)
        else
                value = APIC_DM_NMI | APIC_LVT_MASKED;
        apic_write(APIC_LVT1, value);
+       preempt_enable();
 }
 
 void __cpuinit lapic_setup_esr(void)
@@ -885,7 +893,7 @@ void __init early_init_lapic_mapping(void)
         * Fetch the APIC ID of the BSP in case we have a
         * default configuration (or the MP table is broken).
         */
-       boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
+       boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
 }
 
 /**
@@ -912,7 +920,7 @@ void __init init_apic_mappings(void)
         * Fetch the APIC ID of the BSP in case we have a
         * default configuration (or the MP table is broken).
         */
-       boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
+       boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
 }
 
 /*
@@ -1051,6 +1059,52 @@ void disconnect_bsp_APIC(int virt_wire_setup)
        apic_write(APIC_LVT1, value);
 }
 
+void __cpuinit generic_processor_info(int apicid, int version)
+{
+       int cpu;
+       cpumask_t tmp_map;
+
+       if (num_processors >= NR_CPUS) {
+               printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
+                      " Processor ignored.\n", NR_CPUS);
+               return;
+       }
+
+       if (num_processors >= maxcpus) {
+               printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
+                      " Processor ignored.\n", maxcpus);
+               return;
+       }
+
+       num_processors++;
+       cpus_complement(tmp_map, cpu_present_map);
+       cpu = first_cpu(tmp_map);
+
+       physid_set(apicid, phys_cpu_present_map);
+       if (apicid == boot_cpu_physical_apicid) {
+               /*
+                * x86_bios_cpu_apicid is required to have processors listed
+                * in same order as logical cpu numbers. Hence the first
+                * entry is BSP, and so on.
+                */
+               cpu = 0;
+       }
+       /* are we being called early in kernel startup? */
+       if (x86_cpu_to_apicid_early_ptr) {
+               u16 *cpu_to_apicid = x86_cpu_to_apicid_early_ptr;
+               u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;
+
+               cpu_to_apicid[cpu] = apicid;
+               bios_cpu_apicid[cpu] = apicid;
+       } else {
+               per_cpu(x86_cpu_to_apicid, cpu) = apicid;
+               per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
+       }
+
+       cpu_set(cpu, cpu_possible_map);
+       cpu_set(cpu, cpu_present_map);
+}
+
 /*
  * Power management
  */
@@ -1087,7 +1141,7 @@ static int lapic_suspend(struct sys_device *dev, pm_message_t state)
 
        maxlvt = lapic_get_maxlvt();
 
-       apic_pm_state.apic_id = apic_read(APIC_ID);
+       apic_pm_state.apic_id = read_apic_id();
        apic_pm_state.apic_taskpri = apic_read(APIC_TASKPRI);
        apic_pm_state.apic_ldr = apic_read(APIC_LDR);
        apic_pm_state.apic_dfr = apic_read(APIC_DFR);