Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-25 Thread Juergen Gross
On 11/24/2014 11:02 AM, Ian Campbell wrote: On Mon, 2014-11-24 at 10:55 +0100, Juergen Gross wrote: On 11/21/2014 02:57 PM, Konrad Rzeszutek Wilk wrote: On Fri, Nov 21, 2014 at 09:42:11AM +0100, Juergen Gross wrote: Hi, while testing my "linear p2m list" patches I saw the following problem (e

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-25 Thread Juergen Gross
On 11/25/2014 05:18 PM, Ian Campbell wrote: On Tue, 2014-11-25 at 17:10 +0100, Juergen Gross wrote: On 11/24/2014 11:02 AM, Ian Campbell wrote: On Mon, 2014-11-24 at 10:55 +0100, Juergen Gross wrote: On 11/21/2014 02:57 PM, Konrad Rzeszutek Wilk wrote: On Fri, Nov 21, 2014 at 09:42:11AM +0100

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-25 Thread Ian Campbell
On Tue, 2014-11-25 at 17:10 +0100, Juergen Gross wrote: > On 11/24/2014 11:02 AM, Ian Campbell wrote: > > On Mon, 2014-11-24 at 10:55 +0100, Juergen Gross wrote: > >> On 11/21/2014 02:57 PM, Konrad Rzeszutek Wilk wrote: > >>> On Fri, Nov 21, 2014 at 09:42:11AM +0100, Juergen Gross wrote: > Hi,

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-25 Thread Juergen Gross
On 11/24/2014 11:02 AM, Ian Campbell wrote: On Mon, 2014-11-24 at 10:55 +0100, Juergen Gross wrote: On 11/21/2014 02:57 PM, Konrad Rzeszutek Wilk wrote: On Fri, Nov 21, 2014 at 09:42:11AM +0100, Juergen Gross wrote: Hi, while testing my "linear p2m list" patches I saw the following problem (e

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Jan Beulich
>>> On 24.11.14 at 18:27, wrote: > On 11/24/2014 04:09 PM, Juergen Gross wrote: >> Still seeing the issue, but less frequent. OTOH I just found in above >> thread in lkml that 3.17 is showing that issue, too. :-( >> >> I'll try to setup a pv-variant of Linus' patch and test it... > > First test s

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Juergen Gross
On 11/24/2014 04:09 PM, Juergen Gross wrote: On 11/24/2014 11:59 AM, Juergen Gross wrote: On 11/24/2014 11:20 AM, Jan Beulich wrote: On 24.11.14 at 10:55, wrote: - Sometimes I see only NMI watchdog messages, looking into hanging cpu state via xen debug keys I can see the cpu(s) in questio

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Juergen Gross
On 11/24/2014 04:09 PM, Juergen Gross wrote: On 11/24/2014 11:59 AM, Juergen Gross wrote: On 11/24/2014 11:20 AM, Jan Beulich wrote: On 24.11.14 at 10:55, wrote: - Sometimes I see only NMI watchdog messages, looking into hanging cpu state via xen debug keys I can see the cpu(s) in questio

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Juergen Gross
On 11/24/2014 11:59 AM, Juergen Gross wrote: On 11/24/2014 11:20 AM, Jan Beulich wrote: On 24.11.14 at 10:55, wrote: - Sometimes I see only NMI watchdog messages, looking into hanging cpu state via xen debug keys I can see the cpu(s) in question are spinning in _raw_spin_lock(): __

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Juergen Gross
On 11/24/2014 11:20 AM, Jan Beulich wrote: On 24.11.14 at 10:55, wrote: - Sometimes I see only NMI watchdog messages, looking into hanging cpu state via xen debug keys I can see the cpu(s) in question are spinning in _raw_spin_lock(): __handle_mm_fault()->__pte_alloc()->pmd_lock()->

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Jan Beulich
>>> On 24.11.14 at 10:55, wrote: > - Sometimes I see only NMI watchdog messages, looking into hanging cpu >state via xen debug keys I can see the cpu(s) in question are spinning >in _raw_spin_lock(): >__handle_mm_fault()->__pte_alloc()->pmd_lock()->_raw_spin_lock() >The hanging cpu

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Ian Campbell
On Mon, 2014-11-24 at 10:55 +0100, Juergen Gross wrote: > On 11/21/2014 02:57 PM, Konrad Rzeszutek Wilk wrote: > > On Fri, Nov 21, 2014 at 09:42:11AM +0100, Juergen Gross wrote: > >> Hi, > >> > >> while testing my "linear p2m list" patches I saw the following > >> problem (even without my patches i

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-24 Thread Juergen Gross
On 11/21/2014 02:57 PM, Konrad Rzeszutek Wilk wrote: On Fri, Nov 21, 2014 at 09:42:11AM +0100, Juergen Gross wrote: Hi, while testing my "linear p2m list" patches I saw the following problem (even without my patches in place): In dom0 running linux 3.18-rc5 on top of Xen 4.4.1 I modified the d

Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-21 Thread Konrad Rzeszutek Wilk
On Fri, Nov 21, 2014 at 09:42:11AM +0100, Juergen Gross wrote: > Hi, > > while testing my "linear p2m list" patches I saw the following > problem (even without my patches in place): > > In dom0 running linux 3.18-rc5 on top of Xen 4.4.1 I modified the > disk image of a guest by attaching it to do

[Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

2014-11-21 Thread Juergen Gross
Hi, while testing my "linear p2m list" patches I saw the following problem (even without my patches in place): In dom0 running linux 3.18-rc5 on top of Xen 4.4.1 I modified the disk image of a guest by attaching it to dom0: xl block-attach 0 file:/var/lib/libvirt/images/opensuse13-1/xvda,xvda,w