Merge branch 'for-next' into for-linus

[safe/jmp/linux-2.6] / arch / x86 / kernel / apic / apic_flat_64.c

diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 3b00299..09d3b17 100644 (file)
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -159,23 +159,9 @@ static int flat_apic_id_registered(void)
        return physid_isset(read_xapic_id(), phys_cpu_present_map);
 }
 
-static unsigned int flat_cpu_mask_to_apicid(const struct cpumask *cpumask)
-{
-       return cpumask_bits(cpumask)[0] & APIC_ALL_CPUS;
-}
-
-static unsigned int flat_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
-                                               const struct cpumask *andmask)
-{
-       unsigned long mask1 = cpumask_bits(cpumask)[0] & APIC_ALL_CPUS;
-       unsigned long mask2 = cpumask_bits(andmask)[0] & APIC_ALL_CPUS;
-
-       return mask1 & mask2;
-}
-
 static int flat_phys_pkg_id(int initial_apic_id, int index_msb)
 {
-       return hard_smp_processor_id() >> index_msb;
+       return initial_apic_id >> index_msb;
 }
 
 struct apic apic_flat =  {
@@ -213,8 +199,8 @@ struct apic apic_flat =  {
        .set_apic_id                    = set_apic_id,
        .apic_id_mask                   = 0xFFu << 24,
 
-       .cpu_mask_to_apicid             = flat_cpu_mask_to_apicid,
-       .cpu_mask_to_apicid_and         = flat_cpu_mask_to_apicid_and,
+       .cpu_mask_to_apicid             = default_cpu_mask_to_apicid,
+       .cpu_mask_to_apicid_and         = default_cpu_mask_to_apicid_and,
 
        .send_IPI_mask                  = flat_send_IPI_mask,
        .send_IPI_mask_allbutself       = flat_send_IPI_mask_allbutself,
@@ -222,12 +208,11 @@ struct apic apic_flat =  {
        .send_IPI_all                   = flat_send_IPI_all,
        .send_IPI_self                  = apic_send_IPI_self,
 
-       .wakeup_cpu                     = NULL,
        .trampoline_phys_low            = DEFAULT_TRAMPOLINE_PHYS_LOW,
        .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
        .wait_for_init_deassert         = NULL,
        .smp_callin_clear_local_apic    = NULL,
-       .inquire_remote_apic            = NULL,
+       .inquire_remote_apic            = default_inquire_remote_apic,
 
        .read                           = native_apic_mem_read,
        .write                          = native_apic_mem_write,
@@ -238,7 +223,7 @@ struct apic apic_flat =  {
 };
 
 /*
- * Physflat mode is used when there are more than 8 CPUs on a AMD system.
+ * Physflat mode is used when there are more than 8 CPUs on a system.
  * We cannot use logical delivery in this case because the mask
  * overflows, so use physical mode.
  */
@@ -250,11 +235,16 @@ static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
         * regardless of how many processors are present (x86_64 ES7000
         * is an example).
         */
-       if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
+       if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
                (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) {
                printk(KERN_DEBUG "system APIC only can use physical flat");
                return 1;
        }
+
+       if (!strncmp(oem_id, "IBM", 3) && !strncmp(oem_table_id, "EXA", 3)) {
+               printk(KERN_DEBUG "IBM Summit detected, will use apic physical");
+               return 1;
+       }
 #endif
 
        return 0;
@@ -321,10 +311,7 @@ physflat_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
                if (cpumask_test_cpu(cpu, cpu_online_mask))
                        break;
        }
-       if (cpu < nr_cpu_ids)
-               return per_cpu(x86_cpu_to_apicid, cpu);
-
-       return BAD_APICID;
+       return per_cpu(x86_cpu_to_apicid, cpu);
 }
 
 struct apic apic_physflat =  {
@@ -373,12 +360,11 @@ struct apic apic_physflat =  {
        .send_IPI_all                   = physflat_send_IPI_all,
        .send_IPI_self                  = apic_send_IPI_self,
 
-       .wakeup_cpu                     = NULL,
        .trampoline_phys_low            = DEFAULT_TRAMPOLINE_PHYS_LOW,
        .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
        .wait_for_init_deassert         = NULL,
        .smp_callin_clear_local_apic    = NULL,
-       .inquire_remote_apic            = NULL,
+       .inquire_remote_apic            = default_inquire_remote_apic,
 
        .read                           = native_apic_mem_read,
        .write                          = native_apic_mem_write,