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Revert "x86/apic: Remove init_bsp_APIC()"

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This reverts commit b371ae0d4a. It causes
boot hangs on old P3/P4 systems when the local APIC is enforced in UP mode.

Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: yinghai@kernel.org
Cc: bhe@redhat.com
Link: https://lkml.kernel.org/r/20171128145350.21560-1-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2017-11-28 16:53:50 +02:00 • committed by Thomas Gleixner
parent beacd6f7ed
commit fc90ccfd28
3 changed files with 53 additions and 0 deletions
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3
arch/x86/kernel/irqinit.c
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@ -61,6 +61,9 @@ void __init init_ISA_irqs(void)
struct irq_chip *chip = legacy_pic->chip;
int i;
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_LOCAL_APIC)
init_bsp_APIC();
#endif
legacy_pic->init(0);
for (i = 0; i < nr_legacy_irqs(); i++)