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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-03-21 13:03:45 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-03-22 11:36:54 -0400 |
| commit | 106b44388d8f76373149c4ea144f717b6d4d9a6d (patch) | |
| tree | a77530a84d10315225fc153e29ed7ac56c0bf54c /drivers/xen/platform-pci.c | |
| parent | 27257fc07c044af99d85400c4bab670342bbc8a5 (diff) | |
| download | blackbird-op-linux-106b44388d8f76373149c4ea144f717b6d4d9a6d.tar.gz blackbird-op-linux-106b44388d8f76373149c4ea144f717b6d4d9a6d.zip | |
xen/smp: Fix bringup bug in AP code.
The CPU hotplug code has now a callback to help bring up the CPU.
Without the call we end up getting:
BUG: soft lockup - CPU#0 stuck for 29s! [migration/0:6]
Modules linked in:
CPU ] Pid: 6, comm: migration/0 Not tainted 3.3.0upstream-01180-ged378a5 #1 Dell Inc. PowerEdge T105 /0RR825
RIP: e030:[<ffffffff810d3b8b>] [<ffffffff810d3b8b>] stop_machine_cpu_stop+0x7b/0xf0
RSP: e02b:ffff8800ceaabdb0 EFLAGS: 00000293
.. snip..
Call Trace:
[<ffffffff810d3b10>] ? stop_one_cpu_nowait+0x50/0x50
[<ffffffff810d3841>] cpu_stopper_thread+0xf1/0x1c0
[<ffffffff815a9776>] ? __schedule+0x3c6/0x760
[<ffffffff815aa749>] ? _raw_spin_unlock_irqrestore+0x19/0x30
[<ffffffff810d3750>] ? res_counter_charge+0x150/0x150
[<ffffffff8108dc76>] kthread+0x96/0xa0
[<ffffffff815b27e4>] kernel_thread_helper+0x4/0x10
[<ffffffff815aacbc>] ? retint_restore_ar
Thix fixes it.
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen/platform-pci.c')
0 files changed, 0 insertions, 0 deletions
