[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [ARM:PATCH v1 1/1] Add Odroid-XU (Exynos5410) support
On Fri, Jul 25, 2014 at 1:05 PM, Ian Campbell <ian.campbell@xxxxxxxxxx> wrote: > On Fri, 2014-07-25 at 10:45 -0700, Suriyan Ramasami wrote: >> PS: I have noticed that there is no ARM port of XEN having more than 2 >> CPUs. Is that correct? > > I don't think so. Midway has 4 and X-gene has 8. > >> I am mentioning this, cause with the XU, though >> I can bring up all 4 processors in XEN and in dom0, domU fails to make >> much boot progress when it is xl created. I am able to boot domU, if I >> restrict the dtb for dom0 to 2 CPUs. > > How strange. One thing I noticed is that if I have 4 dom0 CPUs, and I have a domU with vcpus=4, it starts the domU with 1 vcpu as seen in xl list. This xl creation does not boot up. Doing a repeated xenctx on this domU gives the below sequence: root@dom0:~/Debug# ./domUtrace.sh 11 0xc026ba78 rb_erase 0xc000dc10 handle_IRQ 0xc0008434 gic_handle_irq 0xc0053abc rcu_irq_exit 0xc0008442 gic_handle_irq 0xc0055594 ktime_get 0xc0053ab8 rcu_irq_exit 0xc005a9d4 tick_periodic 0xc0053a92 rcu_irq_exit 0xc0053a9a rcu_irq_exit 0xc00491e0 do_raw_spin_lock 0xc0053a92 rcu_irq_exit 0xc003e92a task_tick_fair 0xc0008454 gic_handle_irq 0xc0008442 gic_handle_irq 0xc0008454 gic_handle_irq 0xc005a9f2 tick_periodic 0xc004938e do_raw_spin_unlock 0xc000dc16 handle_IRQ 0xc0053ab2 rcu_irq_exit 0xc0039ed0 idle_cpu I also noticed that in some instances of "xl create" it does bring up domU with 4 cpus as mentioned in the domU.cfg file, and in those instances the domU boots up. Is this some kind of bug? > > Are all 4 cores the same or is this a 2x2 big.LITTLE system? I suspect > we don't handle mixed systems at all well right now. > > Ian. > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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