On Tue, Feb 24, 2009 at 11:38 AM, Boris Derzhavets
<bderzhavets@xxxxxxxxx> wrote:
> I fixed error in hvm profile and got a similar qemu-dm.strace (
> /usr/lib64/.../qemu-dm).
>
> --- On Mon, 2/23/09, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
>
> From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
> Subject: Re: [Xen-devel] HVM pvops failures
> To: "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx>
> Cc: "Andrew Lyon" <andrew.lyon@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx"
> <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Ian Campbell" <Ian.Campbell@xxxxxxxxxx>
> Date: Monday, February 23, 2009, 7:12 PM
>
> Ian Jackson wrote:
>> Andrew Lyon writes ("Re: [Xen-devel] HVM guest question (was Re:
> [PATCH] ioemu: Cleanup the code of PCI passthrough.)"):
>>
>>> On Mon, Feb 23, 2009 at 2:53 PM, Ian
> Jackson
> <Ian.Jackson@xxxxxxxxxxxxx> wrote:
>>>
>>>> These messages are not very surprising. Is it working ?
>>>>
>>> No, when try to start HVM on Xen unstable with pv_ops kernel I get
> this error:
>>>
>>
>> Ah. This is rather odd. Normally I would hope that xend would report
>> an exit status. (I haven't tried pvops with qemu.)
>>
>>
> Hm, I'm getting:
> [2009-02-23 15:26:18 4380] WARNING (image:482) domain win7: device model
> failure: pid 5409: died due to signal 7; see /var/log/xen/qemu-dm-win7.log
>
> Hm, signal 7 - SIGBUS. I wonder if
>
> Using stub domains doesn't work either.
>
>> I would suggest running qemu-dm under strace. This can be done easily
>> enough with a simple wrapper script, something like:
>> #!/bin/sh
>> set -e
>> exec strace -vvs500 -f -o /root/qemu-dm.strace \
>>
> /usr/lib/xen/bin/qemu-dm "$@"
>> and then give the name of the script as device_model in your config file.
Is there anything more I can do to help debug this problem? I am eager
to do more testing with pv_ops and I have time to do it at the moment,
but hvm support is currently broken so there is little I can do with
my test box.
Thx
Andy
>>
> I see:
>
> ...
> 5079 ioctl(10, EVIOCGKEYCODE, 0x7fffdfd52b70) = 0
> 5079 clock_gettime(CLOCK_MONOTONIC, {1324, 539747423}) = 0
> 5079 clock_gettime(CLOCK_MONOTONIC, {1324, 539837298}) = 0
> 5079 select(14, [3 6 10 11 13], [], [], {0, 10000}) = 1 (in [10], left {0,
> 9995})
> 5079 read(10, "\36\0\0\0"..., 4) = 4
> 5079 write(10, "\36\0\0\0"..., 4) = 4
> 5079 ioctl(10, EVIOCGKEYCODE, 0x7fffdfd52b70) = 0
> 5079 clock_gettime(CLOCK_MONOTONIC, {1324, 540495964}) = 0
> 5079 clock_gettime(CLOCK_MONOTONIC, {1324, 540591278}) = 0
> 5079 select(14, [3 6 10 11 13], [], [], {0, 10000}) = 1 (in [10], left {0,
> 9995})
> 5079 read(10, "\36\0\0\0"..., 4) = 4
> 5079 write(10, "\36\0\0\0"..., 4) = 4
> 5079 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_SHARED, 4, 0) =
> 0x7f1ad5f2b000
> 5079
> ioctl(4, SNDCTL_DSP_STEREO, 0x7fffdfd52230) = 0
> 5079 --- SIGBUS (Bus error) @ 0 (0) ---
> 5157 +++ killed by SIGBUS +++
>
>
> This mmap and ioctl is from /proc/xen/privcmd.
>
> J
>
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