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authorYinghai Lu <yhlu.kernel@gmail.com>2008-06-08 18:29:22 -0700
committerIngo Molnar <mingo@elte.hu>2008-06-10 11:32:09 +0200
commite0da33646826b66ef933d47ea2fb7a693fd849bf (patch)
tree398d86b96531e574c4710ea1538806b7e0ae0fef /arch/x86/kernel/genapic_64.c
parentc3ff01672a23fabb40d4b80ff25a845582fd07c2 (diff)
x86: introduce max_physical_apicid for bigsmp switching
a multi-socket test-system with 3 or 4 ioapics, when 4 dualcore cpus or 2 quadcore cpus installed, needs to switch to bigsmp or physflat. CPU apic id is [4,11] instead of [0,7], and we need to check max apic id instead of cpu numbers. also add check for 32 bit when acpi is not compiled in or acpi=off. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 cbaaf69bedb..1fa8be5bd21 100644
--- a/arch/x86/kernel/genapic_64.c
+++ b/arch/x86/kernel/genapic_64.c
@@ -51,7 +51,7 @@ void __init setup_apic_routing(void)
else
#endif
- if (num_possible_cpus() <= 8)
+ if (max_physical_apicid < 8)
genapic = &apic_flat;
else
genapic = &apic_physflat;