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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-03-19 14:25:42 -0300
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:41:02 +0200
commitd2bcbad5f3ad38a1c09861bca7e252dde7bb8259 (patch)
treed0fc64c6930a2ba48a9f7d4e4d40eee2dc817604
parent802b8133b4f78c30a2668d142d78861e27c0c6a7 (diff)
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>
-rw-r--r--arch/x86/kernel/smpboot_32.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 255c6f76148..88ee65585d3 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -195,11 +195,6 @@ static void __cpuinit start_secondary(void *unused)
enable_NMI_through_LVT0();
enable_8259A_irq(0);
}
- /*
- * low-memory mappings have been cleared, flush them from
- * the local TLBs too.
- */
- local_flush_tlb();
/* This must be done before setting cpu_online_map */
set_cpu_sibling_map(raw_smp_processor_id());
@@ -714,8 +709,6 @@ static void __cpuinit __smp_prepare_cpu(int cpu)
schedule_work(&info.task);
wait_for_completion(&done);
}
-
- zap_low_mappings();
}
#endif