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authorAndi Kleen <andi@firstfloor.org>2008-04-25 11:45:26 +0200
committerIngo Molnar <mingo@elte.hu>2008-04-30 23:15:34 +0200
commitf6c133f7d5ee3b82f5b34b988e897ea38cd8219c (patch)
tree42e916ab4b15d4a14e58545c7e1a6394c781bff4 /arch/x86/kernel/genapic_64.c
parent575ca7351bf0546919060071797cccb4a05960df (diff)
fix: x86: support for new UV apic
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>
Diffstat (limited to 'arch/x86/kernel/genapic_64.c')
-rw-r--r--arch/x86/kernel/genapic_64.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/genapic_64.c b/arch/x86/kernel/genapic_64.c
index 021624c8358..cbaaf69bedb 100644
--- 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);