linux-kernel - [PATCH 09/16] x86: Implement x86_32_early_logical_apicid() for bigsmp

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Date:	Thu, 30 Dec 2010 18:49:22 +0100
From:	Tejun Heo <tj@...nel.org>
To:	linux-kernel@...r.kernel.org, mingo@...hat.com, tglx@...utronix.de,
	hpa@...or.com, x86@...nel.org, eric.dumazet@...il.com,
	yinghai@...nel.org, brgerst@...il.com, gorcunov@...il.com,
	penberg@...nel.org, shaohui.zheng@...el.com, rientjes@...gle.com
Cc:	Tejun Heo <tj@...nel.org>
Subject: [PATCH 09/16] x86: Implement x86_32_early_logical_apicid() for bigsmp_32

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 arch/x86/kernel/apic/bigsmp_32.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
index dd32a9b..bc7ed04 100644
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -45,6 +45,12 @@ static unsigned long bigsmp_check_apicid_present(int bit)
 	return 1;
 }
 
+static int bigsmp_early_logical_apicid(int cpu)
+{
+	/* on bigsmp, logical apicid is the same as physical */
+	return early_per_cpu(x86_cpu_to_apicid, cpu);
+}
+
 static inline unsigned long calculate_ldr(int cpu)
 {
 	unsigned long val, id;
@@ -252,5 +258,5 @@ struct apic apic_bigsmp = {
 	.wait_icr_idle			= native_apic_wait_icr_idle,
 	.safe_wait_icr_idle		= native_safe_apic_wait_icr_idle,
 
-	.x86_32_early_logical_apicid	= noop_x86_32_early_logical_apicid,
+	.x86_32_early_logical_apicid	= bigsmp_early_logical_apicid,
 };
-- 
1.7.1

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