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x86: do not zap_low_mappings in __smp_prepare_cpus
It was okay when cpus were cold booted before this point. But with the new state machine, they will not have arrived to the trampoline yet. zapping low mappings will have the bad effect of breaking it completely after paging enablement Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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1 changed files with 0 additions and 7 deletions
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@ -195,11 +195,6 @@ static void __cpuinit start_secondary(void *unused)
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enable_NMI_through_LVT0();
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enable_8259A_irq(0);
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}
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/*
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* low-memory mappings have been cleared, flush them from
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* the local TLBs too.
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*/
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local_flush_tlb();
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/* This must be done before setting cpu_online_map */
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set_cpu_sibling_map(raw_smp_processor_id());
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@ -714,8 +709,6 @@ static void __cpuinit __smp_prepare_cpu(int cpu)
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schedule_work(&info.task);
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wait_for_completion(&done);
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}
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zap_low_mappings();
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}
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#endif
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