From: Yinghai Lu <yinghai@kernel.org>
To: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
linux-kernel@vger.kernel.org, Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH 09/10] x86, apic: set fixmap only one time
Date: Fri, 6 Aug 2010 19:15:42 -0700 [thread overview]
Message-ID: <1281147343-18389-10-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1281147343-18389-1-git-send-email-yinghai@kernel.org>
check if mp_lapic_addr is assigned or not.
Signed-off-by: Yinghai Lu <yinghai@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
next prev parent reply other threads:[~2010-08-07 2:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-07 2:15 [PATCH 00/10] x86: clean up using smp_register_lapic_address() Yinghai Lu
2010-08-07 2:15 ` [PATCH 01/10] x86: Fix lapic mapping with construct ISA and visws mptable path Yinghai Lu
2010-08-07 2:15 ` [PATCH 02/10] x86, acpi: merge two register_lapic_address() Yinghai Lu
2010-08-07 2:15 ` [PATCH 03/10] x86: remove early_init_lapic_mapping Yinghai Lu
2010-08-07 2:15 ` [PATCH 04/10] x86: call smp_register_lapic_address for contruct_default mptable path Yinghai Lu
2010-08-07 2:15 ` [PATCH 05/10] x86, apic: use smp_register_lapic_address in init_apic_mapping Yinghai Lu
2010-08-07 2:15 ` [PATCH 06/10] x86, sfi: used smp_register_lapic_address Yinghai Lu
2010-08-07 2:15 ` [PATCH 07/10] x86,visws: set_fixmap in find_smp_config Yinghai Lu
2010-08-07 2:15 ` [PATCH 08/10] x86: !find_smp_config path use smp_register_lapic_address Yinghai Lu
2010-08-07 2:15 ` Yinghai Lu [this message]
2010-08-07 2:15 ` [PATCH 10/10] x86, ioapic: only print mapping for ioapic in right place Yinghai Lu
2010-08-14 20:35 ` [PATCH -v2 08/10] x86: !find_smp_config path use smp_register_lapic_address Yinghai Lu
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