linux-kernel - [PATCH 29/79] [PATCH] fill bios cpu to apicid maps

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Date:	Wed, 19 Mar 2008 14:25:24 -0300
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, tglx@...utronix.de, mingo@...e.hu,
	ak@...e.de, Glauber Costa <gcosta@...hat.com>
Subject: [PATCH 29/79] [PATCH] fill bios cpu to apicid maps

From: Glauber Costa <gcosta@...hat.com>

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@...hat.com>
---
 arch/x86/kernel/mpparse_32.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/mpparse_32.c b/arch/x86/kernel/mpparse_32.c
index c6a9789..56fb828 100644
--- a/arch/x86/kernel/mpparse_32.c
+++ b/arch/x86/kernel/mpparse_32.c
@@ -76,8 +76,6 @@ 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:
  */
@@ -221,7 +219,14 @@ 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)
-- 
1.5.0.6

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