On Mon, 11 May 2015 09:09:08 -0700 Josh Triplett <j...@joshtriplett.org>
wrote:
> Decoding that instruction stream (either from those bytes, or via the
> 'x' command in the qemu console) shows (starting with the failing
> instruction):
> 
>    0:   9b db e3                finit

finit indeed is not supported by KVM in emulation mode.  The question is
why KVM is in emulation mode.

Can you please collect a KVM trace (trace-cmd record -e kvm -e kvmmmu
qemu-system-x86_64 --enable-kvm ...) and provide the full QEMU command line?

Also please include the output of "grep -r . /sys/module/kvm*/parameters".

You can send it to me privately if it's too large but, as you likely
know, traces compress very well.

Thanks,

Paolo

>    3:   68 7f 03 00 00          pushq  $0x37f
>    8:   48 8d 04 24             lea    (%rsp),%rax
>    c:   d9 28                   fldcw  (%rax)
>    e:   58                      pop    %rax
>    f:   0f 20 e0                mov    %cr4,%rax
>   12:   48 0d 00 02 00 00       or     $0x200,%rax
>   18:   0f 22 e0                mov    %rax,%cr4
> 
> If I disable kvm acceleration, this failure does not occur.  The failure still
> occurs with other values for the -cpu option.
> 
> Happy to collect additional information about the crash, or try with
> other options, to help debug this.  I can also run a qemu binary under
> gdb and collect information that way, if that helps.
> 
> - Josh Triplett


-- 
To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org

Reply via email to