Hi,

I was trying the latest tip kernel and I am seeing the following
message. After some more logs the machine does not proceed.

------------[ cut here ]------------
WARNING: at kernel/time/clockevents.c:47 clockevent_delta2ns+0x79/0x90()
Hardware name: System x3850 X5 -[71455RQ]-
Modules linked in:
Pid: 1, comm: swapper/0 Not tainted 3.2.0-rc4-tip #3
Call Trace:
 [<ffffffff8104d3af>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8104d40a>] warn_slowpath_null+0x1a/0x20
 [<ffffffff81097ab9>] clockevent_delta2ns+0x79/0x90
 [<ffffffff81e49109>] calibrate_APIC_clock+0x16e/0x377
 [<ffffffff81e4942c>] setup_boot_APIC_clock+0x59/0x7e
 [<ffffffff81e472d1>] native_smp_prepare_cpus+0x1f1/0x205
 [<ffffffff81e38767>] kernel_init+0x1b6/0x29a
 [<ffffffff815f9ca4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81e385b1>] ? parse_early_options+0x20/0x20
 [<ffffffff815f9ca0>] ? gs_change+0x13/0x13
---[ end trace a7919e7f17c0a725 ]---
APIC frequency too slow, disabling apic timer
Performance Events: PEBS fmt1+, Nehalem events, Intel PMU driver.
CPU erratum AAJ80 worked around
CPUID marked event: 'bus cycles' unavailable
... version:                3
... bit width:              48
... generic registers:      4
... value mask:             0000ffffffffffff
... max period:             000000007fffffff
... fixed-purpose events:   3
... event mask:             000000070000000f
NMI watchdog enabled, takes one hw-pmu counter.
Booting Node   0, Processors  #1
APIC never delivered???
APIC delivery error (ef).
 #2
APIC never delivered???
APIC delivery error (ef).
 #3
-------------------------------------------------------


Logs and config attached for the details.

Regards,
Nikunj