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| author | Yinghai Lu | 2008-06-21 01:11:20 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2008-07-08 12:48:31 +0200 |
| commit | 3c999f142665265afd0fe9190204dd051f17e505 (patch) | |
| tree | 83b764c2a90890c22b199d6445cf2e132babe455 /arch/x86/kernel/acpi/boot.c | |
| parent | xen: set max_pfn_mapped (diff) | |
| download | kernel-qcow2-linux-3c999f142665265afd0fe9190204dd051f17e505.tar.gz kernel-qcow2-linux-3c999f142665265afd0fe9190204dd051f17e505.tar.xz kernel-qcow2-linux-3c999f142665265afd0fe9190204dd051f17e505.zip | |
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>
Diffstat (limited to 'arch/x86/kernel/acpi/boot.c')
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 6516359922ba..5c0107602b62 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -1787,6 +1787,20 @@ static int __init parse_pci(char *arg) } early_param("pci", parse_pci); +int __init acpi_mps_check(void) +{ +#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE) +/* mptable code is not built-in*/ + if (acpi_disabled || acpi_noirq) { + printk(KERN_WARNING "MPS support code is not built-in.\n" + "Using acpi=off or acpi=noirq or pci=noacpi " + "may have problem\n"); + return 1; + } +#endif + return 0; +} + #ifdef CONFIG_X86_IO_APIC static int __init parse_acpi_skip_timer_override(char *arg) { |