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Commit d3a247bf authored by Cyrill Gorcunov's avatar Cyrill Gorcunov Committed by Ingo Molnar
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x86, apic: Slim down stack usage in early_init_lapic_mapping() 



As far as I see there is no external poking of mp_lapic_addr in
this procedure which could lead to unpredited changes and
require local storage unit for it. Lets use it plain forward.

Signed-off-by: default avatarCyrill Gorcunov <gorcunov@openvz.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090826171324.GC4548@lenovo>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent ffc43836

arch/x86/kernel/apic/apic.c

+2 −6
Original line number Diff line number Diff line
@@ -1562,8 +1562,6 @@ static int __init detect_init_APIC(void) 
#ifdef CONFIG_X86_64

void __init early_init_lapic_mapping(void)

{

	unsigned long phys_addr;



	/*

	 * If no local APIC can be found then go out

	 * : it means there is no mpatable and MADT
@@ -1571,11 +1569,9 @@ void __init early_init_lapic_mapping(void) 
	if (!smp_found_config)

		return;



	phys_addr = mp_lapic_addr;



	set_fixmap_nocache(FIX_APIC_BASE, phys_addr);

	set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr);

	apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n",

		    APIC_BASE, phys_addr);

		    APIC_BASE, mp_lapic_addr);



	/*

	 * Fetch the APIC ID of the BSP in case we have a