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fix: x86: support for new UV apic
author
Andi Kleen
<andi@firstfloor.org>
Fri, 25 Apr 2008 09:45:26 +0000
(11:45 +0200)
committer
Ingo Molnar
<mingo@elte.hu>
Wed, 30 Apr 2008 21:15:34 +0000
(23:15 +0200)
Don't warn in read_apic_id() when preemptible but only one CPU online.
Signed-off-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/kernel/genapic_64.c
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diff --git
a/arch/x86/kernel/genapic_64.c
b/arch/x86/kernel/genapic_64.c
index
021624c
..
cbaaf69
100644
(file)
--- a/
arch/x86/kernel/genapic_64.c
+++ b/
arch/x86/kernel/genapic_64.c
@@
-83,7
+83,7
@@
unsigned int read_apic_id(void)
{
unsigned int id;
- WARN_ON(preemptible());
+ WARN_ON(preemptible()
&& num_online_cpus() > 1
);
id = apic_read(APIC_ID);
if (uv_system_type >= UV_X2APIC)
id |= __get_cpu_var(x2apic_extra_bits);