Messages in this thread Patch in this message | | | Date | Wed, 09 Feb 2011 08:21:02 +0000 | From | "Jan Beulich" <> | Subject | [PATCH, resend] x86: fix section mismatch in LAPIC initialization |
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Additionally doing things conditionally upon smp_processor_id() being zero is generally a bad idea, as this means CPU 0 cannot be offlined and brought back online later again. While there may be other places where this is done, I think adding more of those should be avoided so that some day SMP can really become "symmetrical".
Signed-off-by: Jan Beulich <jbeulich@novell.com>
--- arch/x86/include/asm/apic.h | 1 + arch/x86/kernel/apic/apic.c | 9 +++++++-- arch/x86/kernel/smpboot.c | 4 ++-- 3 files changed, 10 insertions(+), 4 deletions(-)
--- 2.6.38-rc4/arch/x86/include/asm/apic.h +++ 2.6.38-rc4-x86-end-lapic-setup/arch/x86/include/asm/apic.h @@ -233,6 +233,7 @@ extern void sync_Arb_IDs(void); extern void init_bsp_APIC(void); extern void setup_local_APIC(void); extern void end_local_APIC_setup(void); +extern void bsp_end_local_APIC_setup(void); extern void init_apic_mappings(void); void register_lapic_address(unsigned long address); extern void setup_boot_APIC_clock(void); --- 2.6.38-rc4/arch/x86/kernel/apic/apic.c +++ 2.6.38-rc4-x86-end-lapic-setup/arch/x86/kernel/apic/apic.c @@ -1381,12 +1381,17 @@ void __cpuinit end_local_APIC_setup(void #endif apic_pm_activate(); +} + +void __init bsp_end_local_APIC_setup(void) +{ + end_local_APIC_setup(); /* * Now that local APIC setup is completed for BP, configure the fault * handling for interrupt remapping. */ - if (!smp_processor_id() && intr_remapping_enabled) + if (intr_remapping_enabled) enable_drhd_fault_handling(); } @@ -1756,7 +1761,7 @@ int __init APIC_init_uniprocessor(void) enable_IO_APIC(); #endif - end_local_APIC_setup(); + bsp_end_local_APIC_setup(); #ifdef CONFIG_X86_IO_APIC if (smp_found_config && !skip_ioapic_setup && nr_ioapics) --- 2.6.38-rc4/arch/x86/kernel/smpboot.c +++ 2.6.38-rc4-x86-end-lapic-setup/arch/x86/kernel/smpboot.c @@ -1060,7 +1060,7 @@ static int __init smp_sanity_check(unsig connect_bsp_APIC(); setup_local_APIC(); - end_local_APIC_setup(); + bsp_end_local_APIC_setup(); return -1; } @@ -1137,7 +1137,7 @@ void __init native_smp_prepare_cpus(unsi if (!skip_ioapic_setup && nr_ioapics) enable_IO_APIC(); - end_local_APIC_setup(); + bsp_end_local_APIC_setup(); map_cpu_to_logical_apicid();
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