• Len Brown's avatar
    ACPI: boot correctly with "nosmp" or "maxcpus=0" · 61ec7567
    Len Brown authored
    In MPS mode, "nosmp" and "maxcpus=0" boot a UP kernel with IOAPIC disabled.
    However, in ACPI mode, these parameters didn't completely disable
    the IO APIC initialization code and boot failed.
    
    init/main.c:
    	Disable the IO_APIC if "nosmp" or "maxcpus=0"
    	undefine disable_ioapic_setup() when it doesn't apply.
    
    i386:
    	delete ioapic_setup(), it was a duplicate of parse_noapic()
    	delete undefinition of disable_ioapic_setup()
    
    x86_64:
    	rename disable_ioapic_setup() to parse_noapic() to match i386
    	define disable_ioapic_setup() in header to match i386
    
    http://bugzilla.kernel.org/show_bug.cgi?id=1641Acked-by: default avatarAndi Kleen <ak@suse.de>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    61ec7567
io_apic.c 69.1 KB