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Message-Id: <12059477881973-git-send-email-gcosta@redhat.com> Date: Wed, 19 Mar 2008 14:25:42 -0300 From: Glauber de Oliveira Costa <gcosta@...hat.com> To: linux-kernel@...r.kernel.org Cc: akpm@...ux-foundation.org, tglx@...utronix.de, mingo@...e.hu, ak@...e.de, Glauber Costa <gcosta@...hat.com> Subject: [PATCH 47/79] [PATCH] do not zap_low_mappings in __smp_prepare_cpus From: Glauber Costa <gcosta@...hat.com> 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@...hat.com> --- arch/x86/kernel/smpboot_32.c | 7 ------- 1 files changed, 0 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c index 255c6f7..88ee655 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 -- 1.5.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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