x86: fill bios cpu to apicid maps

We fill the per-cpu (or array) that maps
bios cpu id to apicid in mpparse_32.c, the way x86_64 does

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 8 insertions, 3 deletions

diff --git a/arch/x86/kernel/mpparse_32.c b/arch/x86/kernel/mpparse_32.c
index 1b1fd6e920e6..6ea97163701f 100644
--- a/arch/x86/kernel/mpparse_32.c
+++ b/arch/x86/kernel/mpparse_32.c
@@ -75,8 +75,6 @@ unsigned disabled_cpus __cpuinitdata;
 /* Bitmask of physically existing CPUs */
 physid_mask_t phys_cpu_present_map;
 
-u8 bios_cpu_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = BAD_APICID };
-
 /*
  * Intel MP BIOS table parsing routines:
  */
@@ -220,7 +218,14 @@ static void __cpuinit MP_processor_info (struct mpc_config_processor *m)
                         def_to_bigsmp = 1;
                 }
         }
-        bios_cpu_apicid[num_processors - 1] = m->mpc_apicid;
+        /* are we being called early in kernel startup? */
+        if (x86_cpu_to_apicid_early_ptr) {
+                u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;
+                bios_cpu_apicid[num_processors - 1] = m->mpc_apicid;
+        } else {
+                int cpu = num_processors - 1;
+                per_cpu(x86_bios_cpu_apicid, cpu) = m->mpc_apicid;
+        }
 }
 
 static void __init MP_bus_info (struct mpc_config_bus *m)