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>,
Len Brown <lenb@kernel.org>,
linux-kernel@vger.kernel.org, Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH 10/15] x86, apic: Set fixmap only one time
Date: Sat, 23 Oct 2010 18:02:24 -0700 [thread overview]
Message-ID: <1287882149-29275-11-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1287882149-29275-1-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 3a4e770..2cfa622 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1682,6 +1682,9 @@ 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);
--
1.7.1
next prev parent reply other threads:[~2010-10-24 1:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-24 1:02 [PATCH 00/15] x86: APIC related clean up Yinghai Lu
2010-10-24 1:02 ` [PATCH 01/15] x86, apic: Don't write io_apic ID if it is not changed Yinghai Lu
2010-10-24 1:02 ` [PATCH 02/15] x86, apic: Fix lapic mapping with construct ISA and visws mptable path Yinghai Lu
2010-10-24 9:47 ` Thomas Gleixner
2010-10-24 1:02 ` [PATCH 03/15] x86, apic: Merge two register_lapic_address() Yinghai Lu
2010-10-24 9:49 ` Thomas Gleixner
2010-10-24 1:02 ` [PATCH 04/15] x86, apic: Remove early_init_lapic_mapping Yinghai Lu
2010-10-24 9:53 ` Thomas Gleixner
2010-10-24 1:02 ` [PATCH 05/15] x86: Call smp_register_lapic_address for contruct_default mptable path Yinghai Lu
2010-10-24 1:02 ` [PATCH 06/15] x86, apic: Use smp_register_lapic_address in init_apic_mapping Yinghai Lu
2010-10-24 1:02 ` [PATCH 07/15] x86, sfi: Use smp_register_lapic_address() Yinghai Lu
2010-10-24 9:56 ` Thomas Gleixner
2010-10-24 1:02 ` [PATCH 08/15] x86, visws: Set_fixmap in find_smp_config Yinghai Lu
2010-10-24 9:58 ` Thomas Gleixner
2010-10-24 1:02 ` [PATCH 09/15] x86: on !find_smp_config path use smp_register_lapic_address Yinghai Lu
2010-10-24 10:01 ` Thomas Gleixner
2010-10-24 1:02 ` Yinghai Lu [this message]
2010-10-24 10:03 ` [PATCH 10/15] x86, apic: Set fixmap only one time Thomas Gleixner
2010-10-24 1:02 ` [PATCH 11/15] x86, ioapic: Only print mapping for ioapic in right place Yinghai Lu
2010-10-25 16:55 ` [PATCH] x86, ioapic: Add debug printing when mapping for ioapic Yinghai Lu
2010-10-25 16:59 ` [PATCH] x86, ioapic: Don't map ioapic regs two times Yinghai Lu
2010-10-24 1:02 ` [PATCH 12/15] x86, x2apic: Don't map lapic addr for preenabled x2apic Yinghai Lu
2010-10-24 1:02 ` [PATCH 13/15] x86, apic, acpi: Handle xapic/x2apic entries in MADT at same time Yinghai Lu
2010-10-24 9:44 ` Thomas Gleixner
2010-10-24 1:02 ` [PATCH 14/15] acpi: Reverse uid and apic_id print out for x2apic Yinghai Lu
2010-10-24 1:02 ` [PATCH 15/15] x86: Disabling x2apic if nox2apic is specified Yinghai Lu
2010-10-24 10:15 ` Thomas Gleixner
2010-10-24 22:09 ` Yinghai Lu
2010-10-25 17:50 ` Suresh Siddha
2010-10-27 6:27 ` [PATCH -v3] x86: Disable " Yinghai Lu
2010-10-29 5:53 ` Suresh Siddha
2010-10-29 7:26 ` Yinghai Lu
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