[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen: make sure the node-affinity is always updated
On gio, 2013-09-12 at 17:57 +0200, Dario Faggioli wrote: > in particular when a domain moves from a cpupool to another, and > when the list of cpus in a cpupool changes. > > Not doing that may result in the domain's node-affinity mask > (as retrieved by csched_balance_cpumask(..CSCHED_BALANCE_NODE_AFFINITY..) ) > and online mask (as retrieved by cpupool_scheduler_cpumask() ) to have > an empty intersection. > > [..] > > an ASSERT (from inside cpumask_cycle() ) triggers like this: > > (XEN) Xen call trace: > (XEN) [<ffff82d08011b124>] _csched_cpu_pick+0x1d2/0x652 > (XEN) [<ffff82d08011b5b2>] csched_cpu_pick+0xe/0x10 > (XEN) [<ffff82d0801232de>] vcpu_migrate+0x167/0x31e > (XEN) [<ffff82d0801238cc>] cpu_disable_scheduler+0x1c8/0x287 > (XEN) [<ffff82d080101b3f>] cpupool_unassign_cpu_helper+0x20/0xb4 > (XEN) [<ffff82d08010544f>] continue_hypercall_tasklet_handler+0x4a/0xb1 > (XEN) [<ffff82d080127793>] do_tasklet_work+0x78/0xab > (XEN) [<ffff82d080127a70>] do_tasklet+0x5f/0x8b > (XEN) [<ffff82d080158985>] idle_loop+0x57/0x5e > (XEN) > (XEN) > (XEN) **************************************** > (XEN) Panic on CPU 1: > (XEN) Assertion 'cpu < nr_cpu_ids' failed at > /home/dario/Sources/xen/xen/xen.git/xen/include/xe:16481 > BTW, I just checked, and this affects 4.3.0. I'll request for it to be properly backported as soon as it hits the unstable repo. Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) Attachment:
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