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From: Yinghai Lu on 6 Aug 2010 22:20
check if mp_lapic_addr is assigned or not.

Signed-off-by: Yinghai Lu <yinghai(a)kernel.org>
---
arch/x86/kernel/apic/apic.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 2c9aa63..198131b 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1611,6 +1611,9 @@ void __init init_apic_mappings(void)

void __init smp_register_lapic_address(unsigned long address)
{
+ if (mp_lapic_addr)
+ return;
+
mp_lapic_addr = address;

set_fixmap_nocache(FIX_APIC_BASE, address);
--
1.6.4.2

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Prev: [GIT PULL 0/4] perf/core fixes and improvements
Next: [PATCH 07/10] x86,visws: set_fixmap in find_smp_config