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x86: APIC/SMP: Downgrade the NMI watchdog for "nosmp"

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If configured to use the I/O APIC, the NMI watchdog is deemed to fail if
the chip has been deactivated as a result of "nosmp".  Downgrade to the
local APIC watchdog similarly to what is done for the UP case.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Maciej W. Rozycki 2008-06-06 03:28:02 +01:00 committed by Ingo Molnar
parent 1966202748
commit d54db1ac9e
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kernel/smpboot.c
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@ -1159,6 +1159,9 @@ static int __init smp_sanity_check(unsigned max_cpus)
if (!max_cpus) {
printk(KERN_INFO "SMP mode deactivated.\n");
smpboot_clear_io_apic();
localise_nmi_watchdog();
#ifdef CONFIG_X86_32
connect_bsp_APIC();
#endif