* [Qemu-devel] [Fwd: Re: i8042 buffer size?]
@ 2009-05-20 16:30 Tomasz Chmielewski
2009-05-25 22:09 ` Marcelo Tosatti
0 siblings, 1 reply; 6+ messages in thread
From: Tomasz Chmielewski @ 2009-05-20 16:30 UTC (permalink / raw)
To: qemu-devel
As a follow up to "i8042.c: No controller found..." thread - below are
the scancodes which Linux receives, and a comment from a former i8042
Linux maintainer (Vojtech Pavlik fro SuSE Labs):
> May 20 12:25:09: 18 81 7f 18 81 7f 18 8e 53 28 00 ff 28 00
> May 20 13:45:43: 09 00 00 08 00 00 18 ff 00 18 ff 00 18 fe 01 08
> May 20 13:57:06: 08 7f 7b 08 7f 00 08 26 00 28 00 fc 38 fe fa 38
> May 20 14:01:55: 38 ea 97 28 00 ff 28 00 ff 28 00 ff 28 00 ff 28 00 ff 28 00 ff 38 ff ff 28 00 ff 28 00 ff 28 00
> May 20 14:14:35: 28 00 ff 28 00 fe 28 00 f9 38 ff f7 28 00 f8 38 fd f2 38 f7 cb 38 fe f5 38 fc e3 38 fe f2 38 fe f2 38 fe f1 38 fe f0 38 fe f1 38 fe f2 38 fe f5 38 fe f5
> May 20 14:15:01: 18 f9 01 18 ff 02 08 00 02 08 00 03 18 fe 06 18 fe 07 18 fc 09 18 fd 09 18 fb 09 18 fa 0a 18 fe 0b 18 fb 08 18 fe 07 18 ff 03 08 00 01 08 00 01 08 00 01 09 00 00 08 00 00 08 00 01 28 00 fe 38 ff ff 28 00 fe 18 ff 00 28 00 ff 18 ff 00 28 00 ff 18 ff 00 09 00 00 08 00 00 18 fb 00 18 f8 00 18 f9 00 18 fe 00 18 ff 01 18 fe 01 18 f9 02 18 fe 00 09 00 00
> May 20 14:20:54: 09 00 00 08 00 00 18 ff 00 18 fc 00 18 fa 00 18 f9 00 18 f9 00 18 fa 00 18 f8 00 18 f7 00 18 f8 00 18 fa 00 18 fa 00 18 fa 00 18 fa 00 18 fc 00 18 fc 00 18 fd 00 38 ff ff 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 08 00 01 18 ff 00 18 ff 00 18 ff 01 18 ff 00 08 00 01 18 ff 00 18 fe 02 18 ff 00 18 ff 00 18 ff 01 18 fd 00 18 fd 00 18 fa 00 18 f7 00 18 f7 00 18 f4 00 18 f3 00 18 ef 00 18 ee 01 18 ed 03 18 ec 04 18 e9 02 08 7f 08 08 7f 00 08 44 00 09 00 00 19 fc 01 08 00 00 38 81 ff 18 92 00
This looks seriously like uninitialized memory (12-bit FAT perhaps?) -
and very much like a Qemu bug. It doesn't even make sense if interpreted
as keyboard scancodes - 00 is reserved and ff is an error condition.
--
Tomasz Chmielewski
http://wpkg.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Fwd: Re: i8042 buffer size?]
2009-05-20 16:30 [Qemu-devel] [Fwd: Re: i8042 buffer size?] Tomasz Chmielewski
@ 2009-05-25 22:09 ` Marcelo Tosatti
2009-05-25 22:20 ` Tomasz Chmielewski
0 siblings, 1 reply; 6+ messages in thread
From: Marcelo Tosatti @ 2009-05-25 22:09 UTC (permalink / raw)
To: Tomasz Chmielewski; +Cc: qemu-devel
On Wed, May 20, 2009 at 06:30:03PM +0200, Tomasz Chmielewski wrote:
> As a follow up to "i8042.c: No controller found..." thread - below are
> the scancodes which Linux receives, and a comment from a former i8042
> Linux maintainer (Vojtech Pavlik fro SuSE Labs):
>
>
>> May 20 12:25:09: 18 81 7f 18 81 7f 18 8e 53 28 00 ff 28 00
>
>> May 20 13:45:43: 09 00 00 08 00 00 18 ff 00 18 ff 00 18 fe 01 08
>
>> May 20 13:57:06: 08 7f 7b 08 7f 00 08 26 00 28 00 fc 38 fe fa 38
>
>> May 20 14:01:55: 38 ea 97 28 00 ff 28 00 ff 28 00 ff 28 00 ff 28 00 ff 28 00 ff 38 ff ff 28 00 ff 28 00 ff 28 00
>
>> May 20 14:14:35: 28 00 ff 28 00 fe 28 00 f9 38 ff f7 28 00 f8 38 fd f2 38 f7 cb 38 fe f5 38 fc e3 38 fe f2 38 fe f2 38 fe f1 38 fe f0 38 fe f1 38 fe f2 38 fe f5 38 fe f5
>
>> May 20 14:15:01: 18 f9 01 18 ff 02 08 00 02 08 00 03 18 fe 06 18 fe 07 18 fc 09 18 fd 09 18 fb 09 18 fa 0a 18 fe 0b 18 fb 08 18 fe 07 18 ff 03 08 00 01 08 00 01 08 00 01 09 00 00 08 00 00 08 00 01 28 00 fe 38 ff ff 28 00 fe 18 ff 00 28 00 ff 18 ff 00 28 00 ff 18 ff 00 09 00 00 08 00 00 18 fb 00 18 f8 00 18 f9 00 18 fe 00 18 ff 01 18 fe 01 18 f9 02 18 fe 00 09 00 00
>
>> May 20 14:20:54: 09 00 00 08 00 00 18 ff 00 18 fc 00 18 fa 00 18 f9 00
>> 18 f9 00 18 fa 00 18 f8 00 18 f7 00 18 f8 00 18 fa 00 18 fa 00 18 fa 00
>> 18 fa 00 18 fc 00 18 fc 00 18 fd 00 38 ff ff 18 ff 00 18 ff 00 18 ff 00
>> 18 ff 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00
>> 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 08 00 01 18 ff 00 18 ff 00
>> 18 ff 01 18 ff 00 08 00 01 18 ff 00 18 fe 02 18 ff 00 18 ff 00 18 ff 01
>> 18 fd 00 18 fd 00 18 fa 00 18 f7 00 18 f7 00 18 f4 00 18 f3 00 18 ef 00
>> 18 ee 01 18 ed 03 18 ec 04 18 e9 02 08 7f 08 08 7f 00 08 44 00 09 00 00
>> 19 fc 01 08 00 00 38 81 ff 18 92 00
>
> This looks seriously like uninitialized memory (12-bit FAT perhaps?) -
> and very much like a Qemu bug. It doesn't even make sense if interpreted
> as keyboard scancodes - 00 is reserved and ff is an error condition.
Tomasz,
Can you provide a recipe on how to reproduce this?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Fwd: Re: i8042 buffer size?]
2009-05-25 22:09 ` Marcelo Tosatti
@ 2009-05-25 22:20 ` Tomasz Chmielewski
2009-05-25 22:57 ` Tomasz Chmielewski
0 siblings, 1 reply; 6+ messages in thread
From: Tomasz Chmielewski @ 2009-05-25 22:20 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: qemu-devel
Marcelo Tosatti wrote:
>>> 18 ff 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00
>>> 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 08 00 01 18 ff 00 18 ff 00
>>> 18 ff 01 18 ff 00 08 00 01 18 ff 00 18 fe 02 18 ff 00 18 ff 00 18 ff 01
>>> 18 fd 00 18 fd 00 18 fa 00 18 f7 00 18 f7 00 18 f4 00 18 f3 00 18 ef 00
>>> 18 ee 01 18 ed 03 18 ec 04 18 e9 02 08 7f 08 08 7f 00 08 44 00 09 00 00
>>> 19 fc 01 08 00 00 38 81 ff 18 92 00
>> This looks seriously like uninitialized memory (12-bit FAT perhaps?) -
>> and very much like a Qemu bug. It doesn't even make sense if interpreted
>> as keyboard scancodes - 00 is reserved and ff is an error condition.
>
> Tomasz,
>
> Can you provide a recipe on how to reproduce this?
I used it with KVM, but it doesn't look KVM specific. I'll see if it
happens with "pure" Qemu.
To reproduce:
- start a guest; connect to VNC
- type on the keyboard (just tap as much keys as you can) as you see
BIOS, bootloader, Linux booting
- if it didn't work on the first time, reboot the guest, type on the
keyboard, change windows with your mouse etc. (make the VNC window
"always on top" usually helps to have focus)
I can reproduce it almost always.
--
Tomasz Chmielewski
http://wpkg.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Fwd: Re: i8042 buffer size?]
2009-05-25 22:20 ` Tomasz Chmielewski
@ 2009-05-25 22:57 ` Tomasz Chmielewski
2009-05-28 8:44 ` Tomasz Chmielewski
0 siblings, 1 reply; 6+ messages in thread
From: Tomasz Chmielewski @ 2009-05-25 22:57 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: qemu-devel
Tomasz Chmielewski wrote:
> Marcelo Tosatti wrote:
>
>>>> 18 ff 00 18 ff 00 18 ff 00 18 fe 00 18 ff 00 18 ff 00 18 fe 00 18 ff
>>>> 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 18 ff 00 08 00 01 18 ff 00 18
>>>> ff 00 18 ff 01 18 ff 00 08 00 01 18 ff 00 18 fe 02 18 ff 00 18 ff 00
>>>> 18 ff 01 18 fd 00 18 fd 00 18 fa 00 18 f7 00 18 f7 00 18 f4 00 18 f3
>>>> 00 18 ef 00 18 ee 01 18 ed 03 18 ec 04 18 e9 02 08 7f 08 08 7f 00 08
>>>> 44 00 09 00 00 19 fc 01 08 00 00 38 81 ff 18 92 00
>>> This looks seriously like uninitialized memory (12-bit FAT perhaps?) -
>>> and very much like a Qemu bug. It doesn't even make sense if interpreted
>>> as keyboard scancodes - 00 is reserved and ff is an error condition.
>>
>> Tomasz,
>> Can you provide a recipe on how to reproduce this?
>
> I used it with KVM, but it doesn't look KVM specific. I'll see if it
> happens with "pure" Qemu.
I just reproduced it with "pure" Qemu, no kqemu or kvm module.
I booted off SystemRescueCd: http://www.sysresccd.org/Download
The system was started with this command line:
/usr/bin/qemu -boot d -m 256 -cdrom
'/usr/src/systemrescuecd-x86-1.2.0.iso' -net nic,vlan=0 -net user,vlan=0
-localtime &
I was just tapping the keys on the keyboard during BIOS phase,
bootloader and kernel booting.
--
Tomasz Chmielewski
http://wpkg.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Fwd: Re: i8042 buffer size?]
2009-05-25 22:57 ` Tomasz Chmielewski
@ 2009-05-28 8:44 ` Tomasz Chmielewski
2009-05-28 11:49 ` Marcelo Tosatti
0 siblings, 1 reply; 6+ messages in thread
From: Tomasz Chmielewski @ 2009-05-28 8:44 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: qemu-devel
Tomasz Chmielewski wrote:
>>> Tomasz,
>>> Can you provide a recipe on how to reproduce this?
>>
>> I used it with KVM, but it doesn't look KVM specific. I'll see if it
>> happens with "pure" Qemu.
>
> I just reproduced it with "pure" Qemu, no kqemu or kvm module.
Hi Marcelo,
Were you able to reproduce it on your system?
--
Tomasz Chmielewski
http://wpkg.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [Fwd: Re: i8042 buffer size?]
2009-05-28 8:44 ` Tomasz Chmielewski
@ 2009-05-28 11:49 ` Marcelo Tosatti
0 siblings, 0 replies; 6+ messages in thread
From: Marcelo Tosatti @ 2009-05-28 11:49 UTC (permalink / raw)
To: Tomasz Chmielewski; +Cc: qemu-devel
On Thu, May 28, 2009 at 10:44:17AM +0200, Tomasz Chmielewski wrote:
> Tomasz Chmielewski wrote:
>
>>>> Tomasz,
>>>> Can you provide a recipe on how to reproduce this?
>>>
>>> I used it with KVM, but it doesn't look KVM specific. I'll see if it
>>> happens with "pure" Qemu.
>>
>> I just reproduced it with "pure" Qemu, no kqemu or kvm module.
>
> Hi Marcelo,
>
> Were you able to reproduce it on your system?
Tomasz,
Haven't got around to it yet, but haven't forgot either.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-05-28 11:53 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2009-05-20 16:30 [Qemu-devel] [Fwd: Re: i8042 buffer size?] Tomasz Chmielewski
2009-05-25 22:09 ` Marcelo Tosatti
2009-05-25 22:20 ` Tomasz Chmielewski
2009-05-25 22:57 ` Tomasz Chmielewski
2009-05-28 8:44 ` Tomasz Chmielewski
2009-05-28 11:49 ` Marcelo Tosatti
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