https://bugzilla.kernel.org/show_bug.cgi?id=42779
Alan changed:
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https://bugzilla.kernel.org/show_bug.cgi?id=42779
Florian Mickler changed:
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--- Comment #27
https://bugzilla.kernel.org/show_bug.cgi?id=42779
--- Comment #26 from Avi Kivity 2012-04-02 09:12:38 ---
Strange, looks like the patches did not take effect at all. The opcode is 0f
6f 02, which should have been decoded as movq.
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--- Comment #25 from madenginee...@gmail.com 2012-04-01 23:40:21 ---
Created an attachment (id=72789)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72789)
Last 10k lines of a trace showing the fault, kernel 3.3rc5 with patches
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--- Comment #24 from madenginee...@gmail.com 2012-04-01 23:39:47 ---
Created an attachment (id=72788)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72788)
Register state and code disassembly at failure point, kernel 3.3rc5 with
patches
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--- Comment #23 from madenginee...@gmail.com 2012-04-01 23:38:21 ---
Now it dies in a different place, still with a movq instruction (movq
(%edx),%mm0). I think the difference is because of a configuration change or
package update since the
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--- Comment #22 from Avi Kivity 2012-04-01 14:15:51 ---
No guarantees of course, but this is just 3.3-rc5 with a few patches on top.
It should be fine for a short test.
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--- Comment #21 from madenginee...@gmail.com 2012-03-31 20:10:38 ---
Sorry for the delay, I've been really busy lately. Is this kernel reasonably
safe to run on my main machine? I'm not worried about it crashing, but if it
takes a filesystem w
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--- Comment #20 from Avi Kivity 2012-03-21 18:21:33 ---
Please try
git://git.kernel.org/pub/scm/virt/kvm/kvm.git emulator-movq
this emulates the two movq instructions used. There may be other unemulated
instructions though.
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--- Comment #19 from madenginee...@gmail.com 2012-02-16 22:01:38 ---
Doesn't seem to help. I used -cpu core2duo,-3dnow (since core2duo is the name
that libvirt, my usual launcher for qemu, has been using), failed on the same
movq. Also tried -
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--- Comment #18 from Avi Kivity 2012-02-16 17:30:47 ---
As a workaround you can use -cpu blah,-3dnow. But we'll have to implement mmx
movq.
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--- Comment #17 from Jan Kiszka 2012-02-16 17:24:34 ---
(In reply to comment #15)
> I set the kernel up for an AMD Geode LX800 (CONFIG_MGEODE_LX), which does
> supposedly support SSE. No idea why it would have built using MMX if that is
> now
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--- Comment #16 from madenginee...@gmail.com 2012-02-16 16:51:10 ---
Background: I'm using KVM as a test platform for code destined for a panel PC
using a Geode LX800.
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--- Comment #15 from madenginee...@gmail.com 2012-02-16 16:48:56 ---
I set the kernel up for an AMD Geode LX800 (CONFIG_MGEODE_LX), which does
supposedly support SSE. No idea why it would have built using MMX if that is
now deprecated in favor
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--- Comment #14 from Jan Kiszka 2012-02-16 11:51:05 ---
Because the selected CPU type doesn't support SSE? Didn't check the config yet,
but I bet that's the reason.
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Avi Kivity changed:
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--- Comment #13 from Avi
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--- Comment #12 from Gleb 2012-02-16 08:40:37 ---
Can you try disabling CONFIG_FB in your guest kernel?
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Jan Kiszka changed:
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--- Comment #11 from J
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--- Comment #10 from Gleb 2012-02-16 08:04:22 ---
(In reply to comment #8)
> Not sure what you mean by installing trace-cmd before capturing the trace--I
> did do that, otherwise I wouldn't have had a trace-cmd to run. The package
I meant tha
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--- Comment #9 from madenginee...@gmail.com 2012-02-16 07:57:35 ---
Created an attachment (id=72397)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72397)
Register state and code disassembly at failure point with qemu 1.0
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--- Comment #8 from madenginee...@gmail.com 2012-02-16 07:56:03 ---
Not sure what you mean by installing trace-cmd before capturing the trace--I
did do that, otherwise I wouldn't have had a trace-cmd to run. The package
version is trace-cmd 1.
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--- Comment #7 from Gleb 2012-02-16 07:43:11 ---
Have you installed trace-cmd before capturing the trace? It failed to parse kvm
events. qemu haven't paused the guest after emulation error (looks like a bug),
so 'x/30i $eip' output is not use
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--- Comment #6 from madenginee...@gmail.com 2012-02-16 07:22:41 ---
Created an attachment (id=72395)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72395)
Last 10k lines of a trace showing the fault
Per Gleb's request
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--- Comment #5 from Gleb 201
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--- Comment #4 from madenginee...@gmail.com 2012-02-16 06:32:48 ---
Same problem occurs with qemu-kvm 1.0 from
https://launchpad.net/~bderzhavets/+archive/lib-usbredir39:
$ sudo kvm -M pc-1.0 -enable-kvm -m 1024 -drive
file=/var/lib/libvirt/i
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--- Comment #3 from madenginee...@gmail.com 2012-02-16 05:57:25 ---
Couldn't attach the trace I recorded of the fault occurring since it's 3 MB
compressed with xz, bigger still with other formats. I can email it if it will
be useful.
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madenginee...@gmail.com changed:
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Attachment #72394|application/octet-stream|text/plain
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madenginee...@gmail.com changed:
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--- Comment #2 from madenginee...@gmail.com 2012-02-16 05:47:18 ---
Created an attachment (id=72394)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72394)
Result of 'registers info' and 'x/30i $eip' after fault
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--- Comment #1 from madenginee...@gmail.com 2012-02-16 05:46:07 ---
Created an attachment (id=72393)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72393)
Configuration of the guest kernel
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