x86: check command line when CONFIG_X86_MPPARSE is not set, v2
if acpi=off, acpi=noirq and pci=noacpi, we need to disable apic.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 369d0fe..cad4e89 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -677,6 +677,11 @@
parse_early_param();
+ if (acpi_mps_check()){
+ enable_local_apic = -1;
+ clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
+ }
+
finish_e820_parsing();
probe_roms();
