tree 26980418ed1a6d6f528ca7681f420d48e2cb7842
parent 88f18ba028b5939bb6f77bd690e5ad8d01bb24cc
author Thomas Gleixner <tglx@linutronix.de> 1179953850 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1179976451 -0700

Ignore bogus ACPI info for offline CPUs

Booting a SMP kernel with maxcpus=1 on a SMP system leads to a hard hang,
because ACPI ignores the maxcpus setting and sends timer broadcast info for
the offline CPUs.  This results in a stuck for ever call to
smp_call_function_single() on an offline CPU.

Ignore the bogus information and print a kernel error to remind ACPI
folks to fix it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>