Commit 9adc1386 authored by Andi Kleen's avatar Andi Kleen Committed by Ingo Molnar

x86: fix early panic with boot option "nosmp"

Impact: fix boot crash with numcpus=0 on certain systems

Fix early exception in __get_smp_config with nosmp.

Bail out early when there is no MP table.
Reported-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
Tested-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 66a05d6b
......@@ -604,6 +604,9 @@ static void __init __get_smp_config(unsigned int early)
printk(KERN_INFO "Using ACPI for processor (LAPIC) "
"configuration information\n");
if (!mpf)
return;
printk(KERN_INFO "Intel MultiProcessor Specification v1.%d\n",
mpf->mpf_specification);
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32)
......
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