Commit a068ea13 authored by Len Brown's avatar Len Brown

[ACPI] If BIOS disabled the LAPIC, believe it by default.

"lapic" is available to force enabling the LAPIC
in the event you know more than your BIOS vendor.
http://bugzilla.kernel.org/show_bug.cgi?id=3238
parent fdd90c3c
...@@ -691,6 +691,12 @@ static int __init detect_init_APIC (void) ...@@ -691,6 +691,12 @@ static int __init detect_init_APIC (void)
} }
if (!cpu_has_apic) { if (!cpu_has_apic) {
/*
* Over-ride BIOS and try to enable LAPIC
* only if "lapic" specified
*/
if (enable_local_apic != 1)
goto no_apic;
/* /*
* Some BIOSes disable the local APIC in the * Some BIOSes disable the local APIC in the
* APIC_BASE MSR. This can only be done in * APIC_BASE MSR. This can only be done in
......
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