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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 /include
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 'include')
-rw-r--r--include/asm-x86/mpspec.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86/mpspec.h b/include/asm-x86/mpspec.h
index f38b68e8de5..4451d720ee0 100644
--- a/include/asm-x86/mpspec.h
+++ b/include/asm-x86/mpspec.h
@@ -33,6 +33,7 @@ extern int mp_bus_id_to_type[MAX_MP_BUSSES];
extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
extern unsigned int boot_cpu_physical_apicid;
+extern unsigned int max_physical_apicid;
extern int smp_found_config;
extern int mpc_default_type;
extern unsigned long mp_lapic_addr;