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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen ARM and rtds real-time scheduler: local_irq_is_enabled() assert
On Fri, Sep 26, 2014 at 04:02:39PM +0200, Leonardo Taccari wrote: > Good afternoon to the entire Xen community! > In the previous months I have succesfully installed and run xen-4.4 on a > cubieboard2 (running Debian GNU/Linux testing armhf). > > Now I am interested on trying and testing the rtds real-time scheduler > and so I have compiled xen-devel (master branch ~1-2 days ago) via an > armhf chroot generated via debootstrap[0] (Debian testing, the same > version of the one I have installed in the microsd of cubieboard2), > running everything through QEMU user mode emulation (dynamic binary > translation). > I have used this setup in order to compile xen toolstack on an amd64 > machine (and thanks to the armhf chroot and QEMU user mode emulation I > avoided the cross-compilation). > > I have applied the four patches regarding rtds real-time scheduler > appeared on xen-devel@ ML with the subject "[PATCH for 4.5 v4 [1-4]/4]" > (I've also needed to apply a patch that fixes a printf(3) syntax in > burn_budget() from Ian Campbell[1]). Would it be possible to use Xen 4.5 for your testing? It has these patches already in? > > I tried to reproduce the scenario described by Meng Xu. > Here it is the complete output on the cubieboard2 (connected via an USB > TTL UART), the problem regards local_irq_is_enabled() assertion is at the > end with the Xen stack trace and call trace: > > > [...] > root@cubieboard:~# /etc/init.d/xencommons start > Starting /usr/local/sbin/xenstored... > Setting domain 0 name, domid and JSON config... > Done setting up Dom0 > Starting xenconsoled... > Starting QEMU as disk backend for dom0 > /etc/init.d/xencommons: line 114: /usr/local/lib/xen/bin/qemu-system-i386: No > such file or directory > root@cubieboard:~# xl sched-rtds > root@cubieboard:~# xl sched-rtds -d Domain-0 -p 20000 -b 10000 > libxl: error: libxl.c:5481:sched_rtds_domain_set: getting domain sched rtds: > Invalid argument libxl_domain_sched_params_set failed. > root@cubieboard:~# xl cpupool-list > Name CPUs Sched Active Domain count > Pool-0 2 credit y 1 > root@cubieboard:~# xl cpupool-cpu-remove Pool-0 1 > root@cubieboard:~# xl cpupool-list > Name CPUs Sched Active Domain count > Pool-0 1 credit y 1 > root@cubieboard:~# xl cpupool-create name=\"rt\" sched=\"rtds\" > Using config file "command line" > cpupool name: rt > scheduler: rtds > number of cpus: 0 > (XEN) Initializing RTDS scheduler > (XEN) WARNING: This is experimental software in development. > (XEN) Use at your own risk. > root@cubieboard:~# xl cpupool-cpu-add rt 1 > root@cubieboard:~# cd xen/debian-testing > root@cubieboard:~/xen/debian-testing# losetup /dev/loop0 > /root/xen/debian-testing/debian-testing.img > root@cubieboard:~/xen/debian-testing# xl create -c debian-testing.cfg > root@cubieboard:~# xl list > Name ID Mem VCPUs State > Time(s) > Domain-0 0 128 2 r----- > 14.3 > debian-testing 1 128 1 ------ > 6.5 > root@cubieboard:~# xl cpupool-list > Name CPUs Sched Active Domain count > Pool-0 1 credit y 2 > rt 1 rtds y 0 > root@cubieboard:~# xl cpupool-migrate debian-testing rt > (XEN) Assertion 'local_irq_is_enabled()' failed, line 137, file spinlock.c > root@cubieboard:~/xen/debian-testing# (XEN) Xen BUG at spinlock.c:137 > (XEN) CPU1: Unexpected Trap: Undefined Instruction > (XEN) ----[ Xen-4.5-unstable arm32 debug=y Not tainted ]---- > (XEN) CPU: 1 > (XEN) PC: 0024b590 __bug+0x2c/0x44 > (XEN) CPSR: 200f01da MODE:Hypervisor > (XEN) R0: 0027b6d4 R1: 3fd11d80 R2: 00000000 R3: 00000000 > (XEN) R4: 00000089 R5: 00272664 R6: 002fe020 R7: 00000049 > (XEN) R8: 4002f9f8 R9: 4002fa78 R10:40038ec0 R11:47fefe3c R12:3fd11d80 > (XEN) HYP: SP: 47fefe34 LR: 0024b590 > (XEN) > (XEN) VTCR_EL2: 80003558 > (XEN) VTTBR_EL2: 000200007ff04000 > (XEN) > (XEN) SCTLR_EL2: 30cd187f > (XEN) HCR_EL2: 000000000038643f > (XEN) TTBR0_EL2: 0000000076010000 > (XEN) > (XEN) ESR_EL2: 00000000 > (XEN) HPFAR_EL2: 000000000001c810 > (XEN) HDFAR: c8800f00 > (XEN) HIFAR: 3ba1661c > (XEN) > (XEN) Xen stack trace from sp=47fefe34: > (XEN) 00000000 47fefe4c 00231f1c 003002a8 47fdd000 47fefe7c 0022c2c4 > 47fdd000 > (XEN) 4002fa78 40011000 47fdd000 40011000 9d305069 00000049 00000001 > 40012040 > (XEN) 00000001 47fefe8c 0023082c 47fdd000 40011000 47fefe9c 00250758 > 47fdd000 > (XEN) 40011000 47fefeac 00250e18 40011000 47fdd000 47feff14 0022d5a4 > 00000000 > (XEN) 002650bc 00000000 4002fa78 000f4240 00000000 47fefef8 00301594 > 00300324 > (XEN) 00000000 47fdd000 00000000 000f4240 00000000 00000000 00000000 > 47fefef8 > (XEN) 002c9ff4 00000001 00301594 002c6000 00000000 0027bb80 7fc00000 > 47feff34 > (XEN) 002310c8 00301594 00301594 00300324 00000000 00000000 7fe00000 > 47feff3c > (XEN) 00231190 47feff54 00250ce0 00000001 00000000 10011142 00000000 > 47feff3c > (XEN) 0025d6c0 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > (XEN) 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > (XEN) 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > (XEN) 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > (XEN) 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > (XEN) 00000000 00000000 00000000 > (XEN) Xen call trace: > (XEN) [<0024b590>] __bug+0x2c/0x44 (PC) > (XEN) [<0024b590>] __bug+0x2c/0x44 (LR) > (XEN) [<00231f1c>] _spin_lock_irq+0x4c/0xdc > (XEN) [<0022c2c4>] rt_context_saved+0x54/0x1d0 > (XEN) [<0023082c>] context_saved+0x7c/0xa4 > (XEN) [<00250758>] schedule_tail+0x150/0x31c > (XEN) [<00250e18>] context_switch+0x114/0x128 > (XEN) [<0022d5a4>] schedule+0x8e4/0x940 > (XEN) [<002310c8>] __do_softirq+0xf8/0x118 > (XEN) [<00231190>] do_softirq+0x18/0x28 > (XEN) [<00250ce0>] idle_loop+0x1a4/0x1c8 > (XEN) [<0025d6c0>] start_secondary+0x1a0/0x1bc > (XEN) > (XEN) > (XEN) **************************************** > (XEN) Panic on CPU 1: > (XEN) CPU1: Unexpected Trap: Undefined Instruction > (XEN) > (XEN) **************************************** > (XEN) > (XEN) Reboot in five seconds... > [...] > > > [0]: https://wiki.debian.org/Debootstrap > [1]: http://lists.xen.org/archives/html/xen-devel/2014-09/msg03352.html > > > Thank you very much for your attention! > Ciao, > L. > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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