kvm-18 breaks Cisco VPN on WinXP SP1

kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

kvm-18 has broken use of Cisco VPN client on WinXP SP1 running on a FC6 
2.6.19-1.2911 client, Intel Core Duo system.  I have been running 
successfully from kvm-11 thru kvm-17 without issue.  After upgrading to 
kvm-18 any attempts to connect the VPN client result in an unresponsive 
X11 session (still can exit with ctrl-alt-bksp).  Reverting to the 
kvm-17 modules works fine.

Any suggestions on how to troubleshoot or fix?

Les

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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

Leslie Mann wrote:
> kvm-18 has broken use of Cisco VPN client on WinXP SP1 running on a FC6 
> 2.6.19-1.2911 client, Intel Core Duo system.  I have been running 
> successfully from kvm-11 thru kvm-17 without issue.  After upgrading to 
> kvm-18 any attempts to connect the VPN client result in an unresponsive 
> X11 session (still can exit with ctrl-alt-bksp).  Reverting to the 
> kvm-17 modules works fine.
>
> Any suggestions on how to troubleshoot or fix?
>   

Is there anything in dmesg?


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> 
> Leslie Mann wrote:
> > kvm-18 has broken use of Cisco VPN client on WinXP SP1 running on a FC6 
> > 2.6.19-1.2911 client, Intel Core Duo system.  I have been running 
> > successfully from kvm-11 thru kvm-17 without issue.  After upgrading to 
> > kvm-18 any attempts to connect the VPN client result in an unresponsive 
> > X11 session (still can exit with ctrl-alt-bksp).  Reverting to the 
> > kvm-17 modules works fine.
> >
> > Any suggestions on how to troubleshoot or fix?
> >   
> 
> Is there anything in dmesg?
> 


Nope.  After a bit more review it appears that only qemu is hung.  I can switch
to a console and back but can't release input from qemu.

Les


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

Leslie Mann wrote:
>>> kvm-18 has broken use of Cisco VPN client on WinXP SP1 running on a FC6 
>>> 2.6.19-1.2911 client, Intel Core Duo system.  I have been running 
>>> successfully from kvm-11 thru kvm-17 without issue.  After upgrading to 
>>> kvm-18 any attempts to connect the VPN client result in an unresponsive 
>>> X11 session (still can exit with ctrl-alt-bksp).  Reverting to the 
>>> kvm-17 modules works fine.
>>>
>>> Any suggestions on how to troubleshoot or fix?
>>>   
>>>       
>> Is there anything in dmesg?
>>
>>     
>
>
> Nope.  After a bit more review it appears that only qemu is hung.  I can switch
> to a console and back but can't release input from qemu.
>
>   

Can you run qemu under strace -ttT?  Be prepared for a long log.

Also, checking with the -no-kvm option is worthwhile.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> 
> Can you run qemu under strace -ttT?  Be prepared for a long log.
> 
> Also, checking with the -no-kvm option is worthwhile.

Avi:

Can't run under strace.  XP starts to boot then blue screens complaining of an
infinite loop in the cirrus driver. I have attached the tail of the strace log.
 I have been running display at max, tried dropping resolution to 800x600, 16
bit but same problem.

Runs fine without kvm modules loaded.

Les



22:35:42.634721 --- SIGIO (I/O possible) @ 0 (0) ---
22:35:42.634772 clock_gettime(CLOCK_MONOTONIC, {5485, 85935510}) = 0 <0.000043>
22:35:42.634886 sigreturn()             = ? (mask now []) <0.000042>
22:35:42.635027 ioctl(6, 0xae80, 0)     = -1 EINTR (Interrupted system call)
<0.000605>
22:35:42.635665 --- SIGIO (I/O possible) @ 0 (0) ---
22:35:42.635687 clock_gettime(CLOCK_MONOTONIC, {5485, 86832272}) = 0 <0.000009>
22:35:42.635731 sigreturn()             = ? (mask now []) <0.000007>
22:35:42.635804 ioctl(6, 0xae80, 0)     = -1 EINTR (Interrupted system call)
<0.000816>
22:35:42.636674 --- SIGIO (I/O possible) @ 0 (0) ---
22:35:42.636724 clock_gettime(CLOCK_MONOTONIC, {5485, 87887434}) = 0 <0.000043>
22:35:42.636838 sigreturn()             = ? (mask now []) <0.000047>
22:35:42.636954 ioctl(6, 0xae80, 0)     = -1 EINTR (Interrupted system call)
<0.000923>
22:35:42.637919 --- SIGINT (Interrupt) @ 0 (0) ---
22:35:42.669539 +++ killed by SIGINT +++


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

Leslie Mann wrote:
> Avi Kivity <avi@...> writes:
>
>   
>> Can you run qemu under strace -ttT?  Be prepared for a long log.
>>
>> Also, checking with the -no-kvm option is worthwhile.
>>     
>
> Avi:
>
> Can't run under strace.  XP starts to boot then blue screens complaining of an
> infinite loop in the cirrus driver. I have attached the tail of the strace log.
>  I have been running display at max, tried dropping resolution to 800x600, 16
> bit but same problem.
>
> Runs fine without kvm modules loaded.
>
>   

Ah, Windows sets a timeout when loading drivers, and of course strace 
slows down the initial screen clear.

You can try attaching strace with the '-p' option, just before 
connecting.  This will reduce the log size greatly.  I should have 
thought of it before.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> Ah, Windows sets a timeout when loading drivers, and of course strace 
> slows down the initial screen clear.
> 
> You can try attaching strace with the '-p' option, just before 
> connecting.  This will reduce the log size greatly.  I should have 
> thought of it before.
> 

Avi:

That works.  Here is the last 100 lines from the strace capture. Letme know if
there is anything else you need.

Les

21:05:48.713254 ioctl(10, 0xae80, 0)    = 0 <0.000022>
21:05:48.713314 ioctl(10, 0xae80, 0)    = 0 <0.000022>
21:05:48.713374 ioctl(10, 0xae80, 0)    = 0 <0.000022>
21:05:48.713442 ioctl(10, 0xae80, 0)    = 0 <0.000028>
21:05:48.713508 ioctl(10, 0xae80, 0)    = 0 <0.000028>
21:05:48.713573 ioctl(10, 0xae80, 0)    = 0 <0.000027>
21:05:48.713638 ioctl(10, 0xae80, 0)    = 0 <0.000027>
21:05:48.713703 ioctl(10, 0xae80, 0)    = 0 <0.000029>
21:05:48.713781 ioctl(10, 0xae80, 0)    = 0 <0.000023>
21:05:48.713841 ioctl(10, 0xae80, 0)    = 0 <0.000023>
21:05:48.713902 ioctl(10, 0xae80, 0)    = 0 <0.000022>
21:05:48.713962 ioctl(10, 0xae80, 0)    = 0 <0.000023>
21:05:48.714023 ioctl(10, 0xae80, 0)    = 0 <0.000029>
21:05:48.714094 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.714117 clock_gettime(CLOCK_MONOTONIC, {1334, 948044221}) = 0 <0.000009>
21:05:48.714165 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.714242 ioctl(10, 0xae80, 0)    = 0 <0.000290>
21:05:48.714571 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.714628 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.714685 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.714743 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.714832 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.714889 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.714946 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715003 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715066 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.715089 clock_gettime(CLOCK_MONOTONIC, {1334, 949016131}) = 0 <0.000010>
21:05:48.715138 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.715214 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.715272 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715329 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.715387 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.715454 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.715512 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715569 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715626 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715683 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715740 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.715796 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.715853 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715910 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.715966 ioctl(10, 0xae80, 0)    = 0 <0.000029>
21:05:48.716029 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.716052 clock_gettime(CLOCK_MONOTONIC, {1334, 950502633}) = 0 <0.000604>
21:05:48.716734 sigreturn()             = ? (mask now []) <0.000025>
21:05:48.716853 ioctl(10, 0xae80, 0)    = 0 <0.000031>
21:05:48.716925 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.716983 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.717038 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.717064 clock_gettime(CLOCK_MONOTONIC, {1334, 950992080}) = 0 <0.000010>
21:05:48.717114 sigreturn()             = ? (mask now []) <0.000977>
21:05:48.719489 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.719522 clock_gettime(CLOCK_MONOTONIC, {1334, 953451331}) = 0 <0.000010>
21:05:48.719574 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.719652 ioctl(10, 0xae80, 0)    = 0 <0.000038>
21:05:48.719728 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.719786 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.719844 ioctl(10, 0xae80, 0)    = 0 <0.000018>
21:05:48.719900 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.719961 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.719985 clock_gettime(CLOCK_MONOTONIC, {1334, 953911724}) = 0 <0.000009>
21:05:48.720033 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.720110 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.720167 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.720224 ioctl(10, 0xae80, 0)    = 0 <0.000118>
21:05:48.720379 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.720546 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.720604 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.720996 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.721019 clock_gettime(CLOCK_MONOTONIC, {1334, 954945934}) = 0 <0.000009>
21:05:48.721066 sigreturn()             = ? (mask now []) <0.000009>
21:05:48.721241 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.721396 ioctl(10, 0xae80, 0)    = 0 <0.000027>
21:05:48.721463 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.721542 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.721600 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.721656 ioctl(10, 0xae80, 0)    = 0 <0.000019>
21:05:48.721713 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.721796 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.721862 ioctl(10, 0xae80, 0)    = 0 <0.000020>
21:05:48.721917 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.721941 clock_gettime(CLOCK_MONOTONIC, {1334, 955869235}) = 0 <0.000103>
21:05:48.722091 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.722171 ioctl(10, 0xae80, 0)    = 0 <0.000022>
21:05:48.722231 ioctl(10, 0xae80, 0)    = 0 <0.000044>
21:05:48.722312 ioctl(10, 0xae80, 0)    = 0 <0.000538>
21:05:48.729375 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.729399 clock_gettime(CLOCK_MONOTONIC, {1334, 963326885}) = 0 <0.000010>
21:05:48.729458 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.729533 ioctl(10, 0xae80, 0)    = 0 <0.000021>
21:05:48.729592 ioctl(10, 0xae80, 0)    = 0 <0.000031>
21:05:48.736544 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.736568 clock_gettime(CLOCK_MONOTONIC, {1334, 970496230}) = 0 <0.000010>
21:05:48.736618 sigreturn()             = ? (mask now []) <0.000008>
21:05:48.736707 ioctl(10, 0xae80, 0)    = 0 <0.000022>
21:05:48.736767 ioctl(10, 0xae80, 0)    = 0 <0.000544>
21:05:48.744119 --- SIGIO (I/O possible) @ 0 (0) ---
21:05:48.744146 clock_gettime(CLOCK_MONOTONIC, {1334, 978076521}) = 0 <0.000010>
21:05:48.744200 sigreturn()             = ? (mask now [INT QUIT TRAP FPE KILL
SEGV TSTP URG SYS RTMIN]) <0.000010>
21:05:48.744285 --- SIGSEGV (Segmentation fault) @ 0 (0) ---



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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

Leslie Mann wrote:
> That works.  Here is the last 100 lines from the strace capture. Letme know if
> there is anything else you need.
>   

[...]

> 21:05:48.736568 clock_gettime(CLOCK_MONOTONIC, {1334, 970496230}) = 0 <0.000010>
> 21:05:48.736618 sigreturn()             = ? (mask now []) <0.000008>
> 21:05:48.736707 ioctl(10, 0xae80, 0)    = 0 <0.000022>
> 21:05:48.736767 ioctl(10, 0xae80, 0)    = 0 <0.000544>
> 21:05:48.744119 --- SIGIO (I/O possible) @ 0 (0) ---
> 21:05:48.744146 clock_gettime(CLOCK_MONOTONIC, {1334, 978076521}) = 0 <0.000010>
> 21:05:48.744200 sigreturn()             = ? (mask now [INT QUIT TRAP FPE KILL
> SEGV TSTP URG SYS RTMIN]) <0.000010>
> 21:05:48.744285 --- SIGSEGV (Segmentation fault) @ 0 (0) ---
>   

The SIGIO means some I/O has occured, but what exactly, we don't know.  
Can you generate a core, attach it with gdb, and generate a backtrace?

Check the backtrace for signs of your password and delete them if 
found.  It shouldn't be there, but then it shouldn't crash either.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Uri Lublin]

[-- Attachment #1.1: Type: text/plain, Size: 2095 bytes --]

When using rtc to keep qemu/host time, which is the default, qemu gets periodically SIGIO signals.

________________________________

From: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org on behalf of Avi Kivity
Sent: Fri 30/03/2007 09:48
To: Leslie Mann
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [kvm-devel] kvm-18 breaks Cisco VPN on WinXP SP1



Leslie Mann wrote:
> That works.  Here is the last 100 lines from the strace capture. Letme know if
> there is anything else you need.
>  

[...]

> 21:05:48.736568 clock_gettime(CLOCK_MONOTONIC, {1334, 970496230}) = 0 <0.000010>
> 21:05:48.736618 sigreturn()             = ? (mask now []) <0.000008>
> 21:05:48.736707 ioctl(10, 0xae80, 0)    = 0 <0.000022>
> 21:05:48.736767 ioctl(10, 0xae80, 0)    = 0 <0.000544>
> 21:05:48.744119 --- SIGIO (I/O possible) @ 0 (0) ---
> 21:05:48.744146 clock_gettime(CLOCK_MONOTONIC, {1334, 978076521}) = 0 <0.000010>
> 21:05:48.744200 sigreturn()             = ? (mask now [INT QUIT TRAP FPE KILL
> SEGV TSTP URG SYS RTMIN]) <0.000010>
> 21:05:48.744285 --- SIGSEGV (Segmentation fault) @ 0 (0) ---
>  

The SIGIO means some I/O has occured, but what exactly, we don't know. 
Can you generate a core, attach it with gdb, and generate a backtrace?

Check the backtrace for signs of your password and delete them if
found.  It shouldn't be there, but then it shouldn't crash either.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> 
> The SIGIO means some I/O has occured, but what exactly, we don't know.  
> Can you generate a core, attach it with gdb, and generate a backtrace?
> 
> Check the backtrace for signs of your password and delete them if 
> found.  It shouldn't be there, but then it shouldn't crash either.
> 

Avi:

I'm a little bit at a loss as to what to do to get a core backtrace.  gcore gets
me 3 frames with no symbol info and I don't see how that can help you.  

I have upgraded the Cisco VPN client from 4.6 to a newer version 4.8 and as well
have tried using a kvm version from svn pulled today, still locking up.  Lockup
seems to happen around when the VPN client attempts to establish IKE session.  
 FYI I am using vde_switch for networking.  I did manage to get debugging info
compiled with no optimization.  The backtrace that follows is from attaching to
running qemu process after UI lock up.  Perhaps there are some clues here?  If
not, anything else I provide that would help?

Thanks
Les

GNU gdb Red Hat Linux (6.5-15.fc6rh)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...
Attaching to process 14339
Reading symbols from /usr/local/bin/qemu...done.
Using host libthread_db library "/lib/libthread_db.so.1".
Reading symbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /lib/libasound.so.2...done.
Loaded symbols for /lib/libasound.so.2
Reading symbols from /usr/lib/libSDL-1.2.so.0...done.
Loaded symbols for /usr/lib/libSDL-1.2.so.0
Reading symbols from /lib/libpthread.so.0...done.
[Thread debugging using libthread_db enabled]
[New Thread -1208875328 (LWP 14339)]
[New Thread -1764164720 (LWP 14340)]
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /lib/libutil.so.1...done.
Loaded symbols for /lib/libutil.so.1
Reading symbols from /lib/librt.so.1...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /lib/libuuid.so.1...done.
Loaded symbols for /lib/libuuid.so.1
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /usr/lib/libesd.so.0...done.
Loaded symbols for /usr/lib/libesd.so.0
Reading symbols from /usr/lib/libaudiofile.so.0...done.
Loaded symbols for /usr/lib/libaudiofile.so.0
Reading symbols from /usr/lib/libX11.so.6...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /usr/lib/libXau.so.6...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libXdmcp.so.6...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /usr/lib/libXext.so.6...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libXrender.so.1...done.
Loaded symbols for /usr/lib/libXrender.so.1
Reading symbols from /usr/lib/libXrandr.so.2...done.
Loaded symbols for /usr/lib/libXrandr.so.2
Reading symbols from /usr/lib/libXcursor.so.1...done.
Loaded symbols for /usr/lib/libXcursor.so.1
Reading symbols from /usr/lib/libXfixes.so.3...done.
Loaded symbols for /usr/lib/libXfixes.so.3
Reading symbols from /usr/lib/gconv/ISO8859-1.so...done.
Loaded symbols for /usr/lib/gconv/ISO8859-1.so
0x00841402 in __kernel_vsyscall ()
(gdb) thread apply all bt full

Thread 2 (Thread -1764164720 (LWP 14340)):
#0  0x00841402 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00ca142c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
No symbol table info available.
#2  0x00deb769 in handle_fildes_io () from /lib/librt.so.1
No symbol table info available.
#3  0x00c9d3db in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#4  0x00bf726e in clone () from /lib/libc.so.6
No symbol table info available.

Thread 1 (Thread -1208875328 (LWP 14339)):
#0  0x00841402 in __kernel_vsyscall ()
No symbol table info available.
#1  0x00bef729 in ioctl () from /lib/libc.so.6
No symbol table info available.
#2  0x0812a8fc in kvm_run (kvm=0xab06008, vcpu=0) at kvmctl.c:715
	r = 0
	fd = 7
	run = (struct kvm_run *) 0xb7f3b000
#3  0x080e8eee in kvm_cpu_exec (env=0xab9ecd0)
    at /usr/src/kvm-svn/qemu/qemu-kvm.c:467
	r = 179956944
	pending = 1
#4  0x080ea428 in cpu_x86_exec (env1=0xab9ecd0)
    at /usr/src/kvm-svn/qemu/cpu-exec.c:411
	reg_AREG0 = (host_reg_t) 0xab9ecd0
	saved_AREG0 = (volatile host_reg_t) 0xbf9381c8
	reg_AREG1 = (host_reg_t) 0x0
	saved_AREG1 = (volatile host_reg_t) 0x0
	reg_AREG2 = (host_reg_t) 0xb26ca0
	saved_AREG2 = (volatile host_reg_t) 0xb26ca0
	reg_AREG3 = (host_reg_t) 0x0
	saved_AREG3 = (volatile host_reg_t) 0x0
	ret = 65536
	interrupt_request = 0
	gen_func = (void (*)(void)) 0
	tb = (TranslationBlock *) 0x0
	tc_ptr = (unsigned char *) 0x0
#5  0x08055236 in main_loop () at /usr/src/kvm-svn/qemu/vl.c:6256
	ret = 25721
	timeout = 0
	env = (CPUX86State *) 0x72000
#0  0x00841402 in __kernel_vsyscall ()
(gdb) quit
The program is running.  Quit anyway (and detach it)? (y or n) Detaching from
program: /usr/local/bin/qemu, process 14339



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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

Leslie Mann wrote:
> Avi Kivity <avi@...> writes:
>
>   
>> The SIGIO means some I/O has occured, but what exactly, we don't know.  
>> Can you generate a core, attach it with gdb, and generate a backtrace?
>>
>> Check the backtrace for signs of your password and delete them if 
>> found.  It shouldn't be there, but then it shouldn't crash either.
>>
>>     
>
> Avi:
>
> I'm a little bit at a loss as to what to do to get a core backtrace.  gcore gets
> me 3 frames with no symbol info and I don't see how that can help you.  
>   

It's probably the aio thread.  But wasn't there a segfault?  That should 
get us a nice core.

> I have upgraded the Cisco VPN client from 4.6 to a newer version 4.8 and as well
> have tried using a kvm version from svn pulled today, still locking up.  Lockup
> seems to happen around when the VPN client attempts to establish IKE session.  
>  FYI I am using vde_switch for networking.  I did manage to get debugging info
> compiled with no optimization.  The backtrace that follows is from attaching to
> running qemu process after UI lock up.  Perhaps there are some clues here?  If
> not, anything else I provide that would help?
>
>   

The backtrace is unhelpful.  I guess we should bisect the kvm-17 -> 
kvm-18 changes.  This is a bit difficult as the userspace interface 
changes are in there, meaning that userspace and the kernel have to be 
updated in step.

I'll prepare the first patch.  Can you ensure that your upgraded setup 
still works kvm-17.


-- 
error compiling committee.c: too many arguments to function


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> 
> It's probably the aio thread.  But wasn't there a segfault?  That should 
> get us a nice core.
>
 
No segfault.  I don't believe that qemu has crashed, it just doesn't respond. 
Only ill effect after killing the process is that the mouse dies.

> 
> The backtrace is unhelpful.  I guess we should bisect the kvm-17 -> 
> kvm-18 changes.  This is a bit difficult as the userspace interface 
> changes are in there, meaning that userspace and the kernel have to be 
> updated in step.
> 
> I'll prepare the first patch.  Can you ensure that your upgraded setup 
> still works kvm-17.
> 

It does, as I use it daily in order to run a Win app that I need.

Les


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

[-- Attachment #1: Type: text/plain, Size: 411 bytes --]

Leslie Mann wrote:
>> I'll prepare the first patch.  Can you ensure that your upgraded setup 
>> still works kvm-17.
>>
>>     
>
> It does, as I use it daily in order to run a Win app that I need.
>   

Please test the attached patch, against kvm-17.  This is subversion 
revision 4546 and git commit c01571ed56754dfea458cc37d553c360082411a1.


-- 
error compiling committee.c: too many arguments to function


[-- Attachment #2: kvm-17-4546-c01571ed56754dfea458cc37d553c360082411a1.patch --]
[-- Type: text/x-patch, Size: 44930 bytes --]

diff -ur kvm-17/kernel/include/linux/kvm.h kvm/kernel/include/linux/kvm.h
--- kvm-17/kernel/include/linux/kvm.h	2007-03-20 15:12:42.000000000 +0200
+++ kvm/kernel/include/linux/kvm.h	2007-04-04 19:19:44.000000000 +0300
@@ -11,7 +11,7 @@
 #include <asm/types.h>
 #include <linux/ioctl.h>
 
-#define KVM_API_VERSION 4
+#define KVM_API_VERSION 9
 
 /*
  * Architectural interrupt line count, and the size of the bitmap needed
@@ -34,36 +34,33 @@
 #define KVM_MEM_LOG_DIRTY_PAGES  1UL
 
 
-#define KVM_EXIT_TYPE_FAIL_ENTRY 1
-#define KVM_EXIT_TYPE_VM_EXIT    2
-
 enum kvm_exit_reason {
 	KVM_EXIT_UNKNOWN          = 0,
 	KVM_EXIT_EXCEPTION        = 1,
 	KVM_EXIT_IO               = 2,
-	KVM_EXIT_CPUID            = 3,
+	KVM_EXIT_HYPERCALL        = 3,
 	KVM_EXIT_DEBUG            = 4,
 	KVM_EXIT_HLT              = 5,
 	KVM_EXIT_MMIO             = 6,
 	KVM_EXIT_IRQ_WINDOW_OPEN  = 7,
 	KVM_EXIT_SHUTDOWN         = 8,
+	KVM_EXIT_FAIL_ENTRY       = 9,
+	KVM_EXIT_INTR             = 10,
 };
 
-/* for KVM_RUN */
+/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
 struct kvm_run {
 	/* in */
-	__u32 emulated;  /* skip current instruction */
-	__u32 mmio_completed; /* mmio request completed */
+	__u32 io_completed; /* mmio/pio request completed */
 	__u8 request_interrupt_window;
-	__u8 padding1[7];
+	__u8 padding1[3];
 
 	/* out */
-	__u32 exit_type;
 	__u32 exit_reason;
 	__u32 instruction_length;
 	__u8 ready_for_interrupt_injection;
 	__u8 if_flag;
-	__u16 padding2;
+	__u8 padding2[6];
 
 	/* in (pre_kvm_run), out (post_kvm_run) */
 	__u64 cr8;
@@ -72,29 +69,26 @@
 	union {
 		/* KVM_EXIT_UNKNOWN */
 		struct {
-			__u32 hardware_exit_reason;
+			__u64 hardware_exit_reason;
 		} hw;
+		/* KVM_EXIT_FAIL_ENTRY */
+		struct {
+			__u64 hardware_entry_failure_reason;
+		} fail_entry;
 		/* KVM_EXIT_EXCEPTION */
 		struct {
 			__u32 exception;
 			__u32 error_code;
 		} ex;
 		/* KVM_EXIT_IO */
-		struct {
+		struct kvm_io {
 #define KVM_EXIT_IO_IN  0
 #define KVM_EXIT_IO_OUT 1
 			__u8 direction;
 			__u8 size; /* bytes */
-			__u8 string;
-			__u8 string_down;
-			__u8 rep;
-			__u8 pad;
 			__u16 port;
-			__u64 count;
-			union {
-				__u64 address;
-				__u32 value;
-			};
+			__u32 count;
+			__u64 data_offset; /* relative to kvm_run start */
 		} io;
 		struct {
 		} debug;
@@ -105,6 +99,13 @@
 			__u32 len;
 			__u8  is_write;
 		} mmio;
+		/* KVM_EXIT_HYPERCALL */
+		struct {
+			__u64 args[6];
+			__u64 ret;
+			__u32 longmode;
+			__u32 pad;
+		} hypercall;
 	};
 };
 
@@ -210,39 +211,72 @@
 	};
 };
 
+struct kvm_cpuid_entry {
+	__u32 function;
+	__u32 eax;
+	__u32 ebx;
+	__u32 ecx;
+	__u32 edx;
+	__u32 padding;
+};
+
+/* for KVM_SET_CPUID */
+struct kvm_cpuid {
+	__u32 nent;
+	__u32 padding;
+	struct kvm_cpuid_entry entries[0];
+};
+
+/* for KVM_SET_SIGNAL_MASK */
+struct kvm_signal_mask {
+	__u32 len;
+	__u8  sigset[0];
+};
+
 #define KVMIO 0xAE
 
 /*
  * ioctls for /dev/kvm fds:
  */
-#define KVM_GET_API_VERSION       _IO(KVMIO, 1)
-#define KVM_CREATE_VM             _IO(KVMIO, 2) /* returns a VM fd */
-#define KVM_GET_MSR_INDEX_LIST    _IOWR(KVMIO, 15, struct kvm_msr_list)
+#define KVM_GET_API_VERSION       _IO(KVMIO,   0x00)
+#define KVM_CREATE_VM             _IO(KVMIO,   0x01) /* returns a VM fd */
+#define KVM_GET_MSR_INDEX_LIST    _IOWR(KVMIO, 0x02, struct kvm_msr_list)
+/*
+ * Check if a kvm extension is available.  Argument is extension number,
+ * return is 1 (yes) or 0 (no, sorry).
+ */
+#define KVM_CHECK_EXTENSION       _IO(KVMIO,   0x03)
+/*
+ * Get size for mmap(vcpu_fd)
+ */
+#define KVM_GET_VCPU_MMAP_SIZE    _IO(KVMIO,   0x04) /* in bytes */
 
 /*
  * ioctls for VM fds
  */
-#define KVM_SET_MEMORY_REGION     _IOW(KVMIO, 10, struct kvm_memory_region)
+#define KVM_SET_MEMORY_REGION     _IOW(KVMIO, 0x40, struct kvm_memory_region)
 /*
  * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
  * a vcpu fd.
  */
-#define KVM_CREATE_VCPU           _IOW(KVMIO, 11, int)
-#define KVM_GET_DIRTY_LOG         _IOW(KVMIO, 12, struct kvm_dirty_log)
-#define KVM_GET_MEM_MAP           _IOW(KVMIO, 16, struct kvm_dirty_log)
+#define KVM_CREATE_VCPU           _IO(KVMIO,  0x41)
+#define KVM_GET_DIRTY_LOG         _IOW(KVMIO, 0x42, struct kvm_dirty_log)
+#define KVM_GET_MEM_MAP           _IOW(KVMIO, 0x43, struct kvm_dirty_log)
 
 /*
  * ioctls for vcpu fds
  */
-#define KVM_RUN                   _IOWR(KVMIO, 2, struct kvm_run)
-#define KVM_GET_REGS              _IOR(KVMIO, 3, struct kvm_regs)
-#define KVM_SET_REGS              _IOW(KVMIO, 4, struct kvm_regs)
-#define KVM_GET_SREGS             _IOR(KVMIO, 5, struct kvm_sregs)
-#define KVM_SET_SREGS             _IOW(KVMIO, 6, struct kvm_sregs)
-#define KVM_TRANSLATE             _IOWR(KVMIO, 7, struct kvm_translation)
-#define KVM_INTERRUPT             _IOW(KVMIO, 8, struct kvm_interrupt)
-#define KVM_DEBUG_GUEST           _IOW(KVMIO, 9, struct kvm_debug_guest)
-#define KVM_GET_MSRS              _IOWR(KVMIO, 13, struct kvm_msrs)
-#define KVM_SET_MSRS              _IOW(KVMIO, 14, struct kvm_msrs)
+#define KVM_RUN                   _IO(KVMIO,   0x80)
+#define KVM_GET_REGS              _IOR(KVMIO,  0x81, struct kvm_regs)
+#define KVM_SET_REGS              _IOW(KVMIO,  0x82, struct kvm_regs)
+#define KVM_GET_SREGS             _IOR(KVMIO,  0x83, struct kvm_sregs)
+#define KVM_SET_SREGS             _IOW(KVMIO,  0x84, struct kvm_sregs)
+#define KVM_TRANSLATE             _IOWR(KVMIO, 0x85, struct kvm_translation)
+#define KVM_INTERRUPT             _IOW(KVMIO,  0x86, struct kvm_interrupt)
+#define KVM_DEBUG_GUEST           _IOW(KVMIO,  0x87, struct kvm_debug_guest)
+#define KVM_GET_MSRS              _IOWR(KVMIO, 0x88, struct kvm_msrs)
+#define KVM_SET_MSRS              _IOW(KVMIO,  0x89, struct kvm_msrs)
+#define KVM_SET_CPUID             _IOW(KVMIO,  0x8a, struct kvm_cpuid)
+#define KVM_SET_SIGNAL_MASK       _IOW(KVMIO,  0x8b, struct kvm_signal_mask)
 
 #endif
diff -ur kvm-17/kernel/kvm.h kvm/kernel/kvm.h
--- kvm-17/kernel/kvm.h	2007-03-20 15:12:42.000000000 +0200
+++ kvm/kernel/kvm.h	2007-04-04 19:19:44.000000000 +0300
@@ -55,6 +55,7 @@
 #define KVM_NUM_MMU_PAGES 256
 #define KVM_MIN_FREE_MMU_PAGES 5
 #define KVM_REFILL_PAGES 25
+#define KVM_MAX_CPUID_ENTRIES 40
 
 #define FX_IMAGE_SIZE 512
 #define FX_IMAGE_ALIGN 16
@@ -73,6 +74,8 @@
 
 #define IOPL_SHIFT 12
 
+#define KVM_PIO_PAGE_OFFSET 1
+
 /*
  * Address types:
  *
@@ -219,6 +222,18 @@
 	VCPU_SREG_LDTR,
 };
 
+struct kvm_pio_request {
+	unsigned long count;
+	int cur_count;
+	struct page *guest_pages[2];
+	unsigned guest_page_offset;
+	int in;
+	int size;
+	int string;
+	int down;
+	int rep;
+};
+
 struct kvm_vcpu {
 	struct kvm *kvm;
 	union {
@@ -228,6 +243,7 @@
 	struct mutex mutex;
 	int   cpu;
 	int   launched;
+	struct kvm_run *run;
 	int interrupt_window_open;
 	unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
 #define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
@@ -274,6 +290,11 @@
 	unsigned char mmio_data[8];
 	gpa_t mmio_phys_addr;
 	gva_t mmio_fault_cr2;
+	struct kvm_pio_request pio;
+	void *pio_data;
+
+	int sigset_active;
+	sigset_t sigset;
 
 	struct {
 		int active;
@@ -285,6 +306,9 @@
 			u32 ar;
 		} tr, es, ds, fs, gs;
 	} rmode;
+
+	int cpuid_nent;
+	struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
 };
 
 struct kvm_memory_slot {
@@ -413,6 +437,7 @@
 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
 hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
+struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
 
 void kvm_emulator_want_group7_invlpg(void);
 
@@ -445,6 +470,10 @@
 
 struct x86_emulate_ctxt;
 
+int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
+		  int size, unsigned long count, int string, int down,
+		  gva_t address, int rep, unsigned port);
+void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
 int emulate_clts(struct kvm_vcpu *vcpu);
 int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
diff -ur kvm-17/kernel/kvm_main.c kvm/kernel/kvm_main.c
--- kvm-17/kernel/kvm_main.c	2007-03-20 15:12:42.000000000 +0200
+++ kvm/kernel/kvm_main.c	2007-04-04 19:19:44.000000000 +0300
@@ -346,6 +346,17 @@
 		kvm_free_physmem_slot(&kvm->memslots[i], NULL);
 }
 
+static void free_pio_guest_pages(struct kvm_vcpu *vcpu)
+{
+	int i;
+
+	for (i = 0; i < 2; ++i)
+		if (vcpu->pio.guest_pages[i]) {
+			__free_page(vcpu->pio.guest_pages[i]);
+			vcpu->pio.guest_pages[i] = NULL;
+		}
+}
+
 static void kvm_free_vcpu(struct kvm_vcpu *vcpu)
 {
 	if (!vcpu->vmcs)
@@ -355,6 +366,11 @@
 	kvm_mmu_destroy(vcpu);
 	vcpu_put(vcpu);
 	kvm_arch_ops->vcpu_free(vcpu);
+	free_page((unsigned long)vcpu->run);
+	vcpu->run = NULL;
+	free_page((unsigned long)vcpu->pio_data);
+	vcpu->pio_data = NULL;
+	free_pio_guest_pages(vcpu);
 }
 
 static void kvm_free_vcpus(struct kvm *kvm)
@@ -1257,7 +1273,16 @@
 	}
 	switch (nr) {
 	default:
-		;
+		run->hypercall.args[0] = a0;
+		run->hypercall.args[1] = a1;
+		run->hypercall.args[2] = a2;
+		run->hypercall.args[3] = a3;
+		run->hypercall.args[4] = a4;
+		run->hypercall.args[5] = a5;
+		run->hypercall.ret = ret;
+		run->hypercall.longmode = is_long_mode(vcpu);
+		kvm_arch_ops->decache_regs(vcpu);
+		return 0;
 	}
 	vcpu->regs[VCPU_REGS_RAX] = ret;
 	kvm_arch_ops->decache_regs(vcpu);
@@ -1558,30 +1583,236 @@
 }
 EXPORT_SYMBOL_GPL(save_msrs);
 
+void kvm_emulate_cpuid(struct kvm_vcpu *vcpu)
+{
+	int i;
+	u32 function;
+	struct kvm_cpuid_entry *e, *best;
+
+	kvm_arch_ops->cache_regs(vcpu);
+	function = vcpu->regs[VCPU_REGS_RAX];
+	vcpu->regs[VCPU_REGS_RAX] = 0;
+	vcpu->regs[VCPU_REGS_RBX] = 0;
+	vcpu->regs[VCPU_REGS_RCX] = 0;
+	vcpu->regs[VCPU_REGS_RDX] = 0;
+	best = NULL;
+	for (i = 0; i < vcpu->cpuid_nent; ++i) {
+		e = &vcpu->cpuid_entries[i];
+		if (e->function == function) {
+			best = e;
+			break;
+		}
+		/*
+		 * Both basic or both extended?
+		 */
+		if (((e->function ^ function) & 0x80000000) == 0)
+			if (!best || e->function > best->function)
+				best = e;
+	}
+	if (best) {
+		vcpu->regs[VCPU_REGS_RAX] = best->eax;
+		vcpu->regs[VCPU_REGS_RBX] = best->ebx;
+		vcpu->regs[VCPU_REGS_RCX] = best->ecx;
+		vcpu->regs[VCPU_REGS_RDX] = best->edx;
+	}
+	kvm_arch_ops->decache_regs(vcpu);
+	kvm_arch_ops->skip_emulated_instruction(vcpu);
+}
+EXPORT_SYMBOL_GPL(kvm_emulate_cpuid);
+
+static int pio_copy_data(struct kvm_vcpu *vcpu)
+{
+	void *p = vcpu->pio_data;
+	void *q;
+	unsigned bytes;
+	int nr_pages = vcpu->pio.guest_pages[1] ? 2 : 1;
+
+	kvm_arch_ops->vcpu_put(vcpu);
+	q = vmap(vcpu->pio.guest_pages, nr_pages, VM_READ|VM_WRITE,
+		 PAGE_KERNEL);
+	if (!q) {
+		kvm_arch_ops->vcpu_load(vcpu);
+		return -ENOMEM;
+	}
+	q += vcpu->pio.guest_page_offset;
+	bytes = vcpu->pio.size * vcpu->pio.cur_count;
+	if (vcpu->pio.in)
+		memcpy(q, p, bytes);
+	else
+		memcpy(p, q, bytes);
+	q -= vcpu->pio.guest_page_offset;
+	vunmap(q);
+	kvm_arch_ops->vcpu_load(vcpu);
+	return 0;
+}
+
+static int complete_pio(struct kvm_vcpu *vcpu)
+{
+	struct kvm_pio_request *io = &vcpu->pio;
+	long delta;
+	int r;
+
+	kvm_arch_ops->cache_regs(vcpu);
+
+	io->count -= io->cur_count;
+	if (!io->string) {
+		if (io->in)
+			memcpy(&vcpu->regs[VCPU_REGS_RAX], vcpu->pio_data,
+			       io->size);
+	} else {
+		if (io->in) {
+			r = pio_copy_data(vcpu);
+			if (r) {
+				kvm_arch_ops->cache_regs(vcpu);
+				return r;
+			}
+		}
+
+		delta = 1;
+		if (io->rep) {
+			delta *= io->cur_count;
+			/*
+			 * The size of the register should really depend on
+			 * current address size.
+			 */
+			vcpu->regs[VCPU_REGS_RCX] -= delta;
+		}
+		if (io->down)
+			delta = -delta;
+		delta *= io->size;
+		if (io->in)
+			vcpu->regs[VCPU_REGS_RDI] += delta;
+		else
+			vcpu->regs[VCPU_REGS_RSI] += delta;
+	}
+
+	vcpu->run->io_completed = 0;
+
+	kvm_arch_ops->decache_regs(vcpu);
+
+	if (!io->count)
+		kvm_arch_ops->skip_emulated_instruction(vcpu);
+	return 0;
+}
+
+int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
+		  int size, unsigned long count, int string, int down,
+		  gva_t address, int rep, unsigned port)
+{
+	unsigned now, in_page;
+	int i;
+	int nr_pages = 1;
+	struct page *page;
+
+	vcpu->run->exit_reason = KVM_EXIT_IO;
+	vcpu->run->io.direction = in ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
+	vcpu->run->io.size = size;
+	vcpu->run->io.data_offset = KVM_PIO_PAGE_OFFSET * PAGE_SIZE;
+	vcpu->run->io.count = count;
+	vcpu->run->io.port = port;
+	vcpu->pio.count = count;
+	vcpu->pio.cur_count = count;
+	vcpu->pio.size = size;
+	vcpu->pio.in = in;
+	vcpu->pio.string = string;
+	vcpu->pio.down = down;
+	vcpu->pio.guest_page_offset = offset_in_page(address);
+	vcpu->pio.rep = rep;
+
+	if (!string) {
+		kvm_arch_ops->cache_regs(vcpu);
+		memcpy(vcpu->pio_data, &vcpu->regs[VCPU_REGS_RAX], 4);
+		kvm_arch_ops->decache_regs(vcpu);
+		return 0;
+	}
+
+	now = min(count, PAGE_SIZE / size);
+
+	if (!down)
+		in_page = PAGE_SIZE - offset_in_page(address);
+	else
+		in_page = offset_in_page(address) + size;
+	now = min(count, (unsigned long)in_page / size);
+	if (!now) {
+		/*
+		 * String I/O straddles page boundary.  Pin two guest pages
+		 * so that we satisfy atomicity constraints.  Do just one
+		 * transaction to avoid complexity.
+		 */
+		nr_pages = 2;
+		now = 1;
+	}
+	if (down) {
+		/*
+		 * String I/O in reverse.  Yuck.  Kill the guest, fix later.
+		 */
+		printk(KERN_ERR "kvm: guest string pio down\n");
+		inject_gp(vcpu);
+		return 1;
+	}
+	vcpu->run->io.count = now;
+	vcpu->pio.cur_count = now;
+
+	for (i = 0; i < nr_pages; ++i) {
+		spin_lock(&vcpu->kvm->lock);
+		page = gva_to_page(vcpu, address + i * PAGE_SIZE);
+		if (page)
+			get_page(page);
+		vcpu->pio.guest_pages[i] = page;
+		spin_unlock(&vcpu->kvm->lock);
+		if (!page) {
+			inject_gp(vcpu);
+			free_pio_guest_pages(vcpu);
+			return 1;
+		}
+	}
+
+	if (!vcpu->pio.in)
+		return pio_copy_data(vcpu);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(kvm_setup_pio);
+
 static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
 	int r;
+	sigset_t sigsaved;
 
 	vcpu_load(vcpu);
 
+	if (vcpu->sigset_active)
+		sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
+
 	/* re-sync apic's tpr */
 	vcpu->cr8 = kvm_run->cr8;
 
-	if (kvm_run->emulated) {
-		kvm_arch_ops->skip_emulated_instruction(vcpu);
-		kvm_run->emulated = 0;
-	}
-
-	if (kvm_run->mmio_completed) {
-		memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
-		vcpu->mmio_read_completed = 1;
-		emulate_instruction(vcpu, kvm_run, vcpu->mmio_fault_cr2, 0);
+	if (kvm_run->io_completed) {
+		if (vcpu->pio.count) {
+			r = complete_pio(vcpu);
+			if (r)
+				goto out;
+		} else {
+			memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
+			vcpu->mmio_read_completed = 1;
+			emulate_instruction(vcpu, kvm_run,
+					    vcpu->mmio_fault_cr2, 0);
+		}
 	}
 
 	vcpu->mmio_needed = 0;
 
+	if (kvm_run->exit_reason == KVM_EXIT_HYPERCALL) {
+		kvm_arch_ops->cache_regs(vcpu);
+		vcpu->regs[VCPU_REGS_RAX] = kvm_run->hypercall.ret;
+		kvm_arch_ops->decache_regs(vcpu);
+	}
+
 	r = kvm_arch_ops->run(vcpu, kvm_run);
 
+out:
+	if (vcpu->sigset_active)
+		sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+
 	vcpu_put(vcpu);
 	return r;
 }
@@ -1944,6 +2175,36 @@
 	return r;
 }
 
+static struct page *kvm_vcpu_nopage(struct vm_area_struct *vma,
+				    unsigned long address,
+				    int *type)
+{
+	struct kvm_vcpu *vcpu = vma->vm_file->private_data;
+	unsigned long pgoff;
+	struct page *page;
+
+	*type = VM_FAULT_MINOR;
+	pgoff = ((address - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
+	if (pgoff == 0)
+		page = virt_to_page(vcpu->run);
+	else if (pgoff == KVM_PIO_PAGE_OFFSET)
+		page = virt_to_page(vcpu->pio_data);
+	else
+		return NOPAGE_SIGBUS;
+	get_page(page);
+	return page;
+}
+
+static struct vm_operations_struct kvm_vcpu_vm_ops = {
+	.nopage = kvm_vcpu_nopage,
+};
+
+static int kvm_vcpu_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	vma->vm_ops = &kvm_vcpu_vm_ops;
+	return 0;
+}
+
 static int kvm_vcpu_release(struct inode *inode, struct file *filp)
 {
 	struct kvm_vcpu *vcpu = filp->private_data;
@@ -1956,6 +2217,7 @@
 	.release        = kvm_vcpu_release,
 	.unlocked_ioctl = kvm_vcpu_ioctl,
 	.compat_ioctl   = kvm_vcpu_ioctl,
+	.mmap           = kvm_vcpu_mmap,
 };
 
 /*
@@ -2004,6 +2266,7 @@
 {
 	int r;
 	struct kvm_vcpu *vcpu;
+	struct page *page;
 
 	r = -EINVAL;
 	if (!valid_vcpu(n))
@@ -2018,6 +2281,18 @@
 		return -EEXIST;
 	}
 
+	page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+	r = -ENOMEM;
+	if (!page)
+		goto out_unlock;
+	vcpu->run = page_address(page);
+
+	page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+	r = -ENOMEM;
+	if (!page)
+		goto out_free_run;
+	vcpu->pio_data = page_address(page);
+
 	vcpu->host_fx_image = (char*)ALIGN((hva_t)vcpu->fx_buf,
 					   FX_IMAGE_ALIGN);
 	vcpu->guest_fx_image = vcpu->host_fx_image + FX_IMAGE_SIZE;
@@ -2047,11 +2322,46 @@
 
 out_free_vcpus:
 	kvm_free_vcpu(vcpu);
+out_free_run:
+	free_page((unsigned long)vcpu->run);
+	vcpu->run = NULL;
+out_unlock:
 	mutex_unlock(&vcpu->mutex);
 out:
 	return r;
 }
 
+static int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
+				    struct kvm_cpuid *cpuid,
+				    struct kvm_cpuid_entry __user *entries)
+{
+	int r;
+
+	r = -E2BIG;
+	if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
+		goto out;
+	r = -EFAULT;
+	if (copy_from_user(&vcpu->cpuid_entries, entries,
+			   cpuid->nent * sizeof(struct kvm_cpuid_entry)))
+		goto out;
+	vcpu->cpuid_nent = cpuid->nent;
+	return 0;
+
+out:
+	return r;
+}
+
+static int kvm_vcpu_ioctl_set_sigmask(struct kvm_vcpu *vcpu, sigset_t *sigset)
+{
+	if (sigset) {
+		sigdelsetmask(sigset, sigmask(SIGKILL)|sigmask(SIGSTOP));
+		vcpu->sigset_active = 1;
+		vcpu->sigset = *sigset;
+	} else
+		vcpu->sigset_active = 0;
+	return 0;
+}
+
 static long kvm_vcpu_ioctl(struct file *filp,
 			   unsigned int ioctl, unsigned long arg)
 {
@@ -2060,21 +2370,12 @@
 	int r = -EINVAL;
 
 	switch (ioctl) {
-	case KVM_RUN: {
-		struct kvm_run kvm_run;
-
-		r = -EFAULT;
-		if (copy_from_user(&kvm_run, argp, sizeof kvm_run))
-			goto out;
-		r = kvm_vcpu_ioctl_run(vcpu, &kvm_run);
-		if (r < 0 &&  r != -EINTR)
+	case KVM_RUN:
+		r = -EINVAL;
+		if (arg)
 			goto out;
-		if (copy_to_user(argp, &kvm_run, sizeof kvm_run)) {
-			r = -EFAULT;
-			goto out;
-		}
+		r = kvm_vcpu_ioctl_run(vcpu, vcpu->run);
 		break;
-	}
 	case KVM_GET_REGS: {
 		struct kvm_regs kvm_regs;
 
@@ -2170,6 +2471,41 @@
 	case KVM_SET_MSRS:
 		r = msr_io(vcpu, argp, do_set_msr, 0);
 		break;
+	case KVM_SET_CPUID: {
+		struct kvm_cpuid __user *cpuid_arg = argp;
+		struct kvm_cpuid cpuid;
+
+		r = -EFAULT;
+		if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
+			goto out;
+		r = kvm_vcpu_ioctl_set_cpuid(vcpu, &cpuid, cpuid_arg->entries);
+		if (r)
+			goto out;
+		break;
+	}
+	case KVM_SET_SIGNAL_MASK: {
+		struct kvm_signal_mask __user *sigmask_arg = argp;
+		struct kvm_signal_mask kvm_sigmask;
+		sigset_t sigset, *p;
+
+		p = NULL;
+		if (argp) {
+			r = -EFAULT;
+			if (copy_from_user(&kvm_sigmask, argp,
+					   sizeof kvm_sigmask))
+				goto out;
+			r = -EINVAL;
+			if (kvm_sigmask.len != sizeof sigset)
+				goto out;
+			r = -EFAULT;
+			if (copy_from_user(&sigset, sigmask_arg->sigset,
+					   sizeof sigset))
+				goto out;
+			p = &sigset;
+		}
+		r = kvm_vcpu_ioctl_set_sigmask(vcpu, &sigset);
+		break;
+	}
 	default:
 		;
 	}
@@ -2316,13 +2652,19 @@
 			  unsigned int ioctl, unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
-	int r = -EINVAL;
+	long r = -EINVAL;
 
 	switch (ioctl) {
 	case KVM_GET_API_VERSION:
+		r = -EINVAL;
+		if (arg)
+			goto out;
 		r = KVM_API_VERSION;
 		break;
 	case KVM_CREATE_VM:
+		r = -EINVAL;
+		if (arg)
+			goto out;
 		r = kvm_dev_ioctl_create_vm();
 		break;
 	case KVM_GET_MSR_INDEX_LIST: {
@@ -2352,6 +2694,18 @@
 		r = 0;
 		break;
 	}
+	case KVM_CHECK_EXTENSION:
+		/*
+		 * No extensions defined at present.
+		 */
+		r = 0;
+		break;
+	case KVM_GET_VCPU_MMAP_SIZE:
+		r = -EINVAL;
+		if (arg)
+			goto out;
+		r = 2 * PAGE_SIZE;
+		break;
 	default:
 		;
 	}
diff -ur kvm-17/kernel/mmu.c kvm/kernel/mmu.c
--- kvm-17/kernel/mmu.c	2007-03-20 15:12:42.000000000 +0200
+++ kvm/kernel/mmu.c	2007-04-04 19:19:44.000000000 +0300
@@ -735,6 +735,15 @@
 	return gpa_to_hpa(vcpu, gpa);
 }
 
+struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva)
+{
+	gpa_t gpa = vcpu->mmu.gva_to_gpa(vcpu, gva);
+
+	if (gpa == UNMAPPED_GVA)
+		return NULL;
+	return pfn_to_page(gpa_to_hpa(vcpu, gpa) >> PAGE_SHIFT);
+}
+
 static void nonpaging_new_cr3(struct kvm_vcpu *vcpu)
 {
 }
diff -ur kvm-17/kernel/svm.c kvm/kernel/svm.c
--- kvm-17/kernel/svm.c	2007-03-20 15:12:42.000000000 +0200
+++ kvm/kernel/svm.c	2007-04-04 19:19:44.000000000 +0300
@@ -582,6 +582,9 @@
 	init_vmcb(vcpu->svm->vmcb);
 
 	fx_init(vcpu);
+	vcpu->apic_base = 0xfee00000 |
+			/*for vcpu 0*/ MSR_IA32_APICBASE_BSP |
+			MSR_IA32_APICBASE_ENABLE;
 
 	return 0;
 
@@ -981,7 +984,7 @@
 	return 0;
 }
 
-static unsigned long io_adress(struct kvm_vcpu *vcpu, int ins, u64 *address)
+static unsigned long io_adress(struct kvm_vcpu *vcpu, int ins, gva_t *address)
 {
 	unsigned long addr_mask;
 	unsigned long *reg;
@@ -1025,38 +1028,38 @@
 static int io_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
 	u32 io_info = vcpu->svm->vmcb->control.exit_info_1; //address size bug?
-	int _in = io_info & SVM_IOIO_TYPE_MASK;
+	int size, down, in, string, rep;
+	unsigned port;
+	unsigned long count;
+	gva_t address = 0;
 
 	++kvm_stat.io_exits;
 
 	vcpu->svm->next_rip = vcpu->svm->vmcb->control.exit_info_2;
 
-	kvm_run->exit_reason = KVM_EXIT_IO;
-	kvm_run->io.port = io_info >> 16;
-	kvm_run->io.direction = (_in) ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
-	kvm_run->io.size = ((io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT);
-	kvm_run->io.string = (io_info & SVM_IOIO_STR_MASK) != 0;
-	kvm_run->io.rep = (io_info & SVM_IOIO_REP_MASK) != 0;
+	in = (io_info & SVM_IOIO_TYPE_MASK) != 0;
+	port = io_info >> 16;
+	size = (io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT;
+	string = (io_info & SVM_IOIO_STR_MASK) != 0;
+	rep = (io_info & SVM_IOIO_REP_MASK) != 0;
+	count = 1;
+	down = (vcpu->svm->vmcb->save.rflags & X86_EFLAGS_DF) != 0;
 
-	if (kvm_run->io.string) {
+	if (string) {
 		unsigned addr_mask;
 
-		addr_mask = io_adress(vcpu, _in, &kvm_run->io.address);
+		addr_mask = io_adress(vcpu, in, &address);
 		if (!addr_mask) {
 			printk(KERN_DEBUG "%s: get io address failed\n",
 			       __FUNCTION__);
 			return 1;
 		}
 
-		if (kvm_run->io.rep) {
-			kvm_run->io.count
-				= vcpu->regs[VCPU_REGS_RCX] & addr_mask;
-			kvm_run->io.string_down = (vcpu->svm->vmcb->save.rflags
-						   & X86_EFLAGS_DF) != 0;
-		}
-	} else
-		kvm_run->io.value = vcpu->svm->vmcb->save.rax;
-	return 0;
+		if (rep)
+			count = vcpu->regs[VCPU_REGS_RCX] & addr_mask;
+	}
+	return kvm_setup_pio(vcpu, kvm_run, in, size, count, string, down,
+			     address, rep, port);
 }
 
 static int nop_on_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
@@ -1099,8 +1102,8 @@
 static int cpuid_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
 	vcpu->svm->next_rip = vcpu->svm->vmcb->save.rip + 2;
-	kvm_run->exit_reason = KVM_EXIT_CPUID;
-	return 0;
+	kvm_emulate_cpuid(vcpu);
+	return 1;
 }
 
 static int emulate_on_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
@@ -1296,8 +1299,6 @@
 {
 	u32 exit_code = vcpu->svm->vmcb->control.exit_code;
 
-	kvm_run->exit_type = KVM_EXIT_TYPE_VM_EXIT;
-
 	if (is_external_interrupt(vcpu->svm->vmcb->control.exit_int_info) &&
 	    exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR)
 		printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
@@ -1607,8 +1608,9 @@
 	vcpu->svm->next_rip = 0;
 
 	if (vcpu->svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
-		kvm_run->exit_type = KVM_EXIT_TYPE_FAIL_ENTRY;
-		kvm_run->exit_reason = vcpu->svm->vmcb->control.exit_code;
+		kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+		kvm_run->fail_entry.hardware_entry_failure_reason
+			= vcpu->svm->vmcb->control.exit_code;
 		post_kvm_run_save(vcpu, kvm_run);
 		return 0;
 	}
@@ -1618,12 +1620,14 @@
 		if (signal_pending(current)) {
 			++kvm_stat.signal_exits;
 			post_kvm_run_save(vcpu, kvm_run);
+			kvm_run->exit_reason = KVM_EXIT_INTR;
 			return -EINTR;
 		}
 
 		if (dm_request_for_irq_injection(vcpu, kvm_run)) {
 			++kvm_stat.request_irq_exits;
 			post_kvm_run_save(vcpu, kvm_run);
+			kvm_run->exit_reason = KVM_EXIT_INTR;
 			return -EINTR;
 		}
 		kvm_resched(vcpu);
diff -ur kvm-17/kernel/vmx.c kvm/kernel/vmx.c
--- kvm-17/kernel/vmx.c	2007-03-20 15:12:42.000000000 +0200
+++ kvm/kernel/vmx.c	2007-04-04 19:19:44.000000000 +0300
@@ -1394,7 +1394,7 @@
 	return 0;
 }
 
-static int get_io_count(struct kvm_vcpu *vcpu, u64 *count)
+static int get_io_count(struct kvm_vcpu *vcpu, unsigned long *count)
 {
 	u64 inst;
 	gva_t rip;
@@ -1439,33 +1439,35 @@
 done:
 	countr_size *= 8;
 	*count = vcpu->regs[VCPU_REGS_RCX] & (~0ULL >> (64 - countr_size));
+	//printk("cx: %lx\n", vcpu->regs[VCPU_REGS_RCX]);
 	return 1;
 }
 
 static int handle_io(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
 	u64 exit_qualification;
+	int size, down, in, string, rep;
+	unsigned port;
+	unsigned long count;
+	gva_t address;
 
 	++kvm_stat.io_exits;
 	exit_qualification = vmcs_read64(EXIT_QUALIFICATION);
-	kvm_run->exit_reason = KVM_EXIT_IO;
-	if (exit_qualification & 8)
-		kvm_run->io.direction = KVM_EXIT_IO_IN;
-	else
-		kvm_run->io.direction = KVM_EXIT_IO_OUT;
-	kvm_run->io.size = (exit_qualification & 7) + 1;
-	kvm_run->io.string = (exit_qualification & 16) != 0;
-	kvm_run->io.string_down
-		= (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_DF) != 0;
-	kvm_run->io.rep = (exit_qualification & 32) != 0;
-	kvm_run->io.port = exit_qualification >> 16;
-	if (kvm_run->io.string) {
-		if (!get_io_count(vcpu, &kvm_run->io.count))
+	in = (exit_qualification & 8) != 0;
+	size = (exit_qualification & 7) + 1;
+	string = (exit_qualification & 16) != 0;
+	down = (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_DF) != 0;
+	count = 1;
+	rep = (exit_qualification & 32) != 0;
+	port = exit_qualification >> 16;
+	address = 0;
+	if (string) {
+		if (rep && !get_io_count(vcpu, &count))
 			return 1;
-		kvm_run->io.address = vmcs_readl(GUEST_LINEAR_ADDRESS);
-	} else
-		kvm_run->io.value = vcpu->regs[VCPU_REGS_RAX]; /* rax */
-	return 0;
+		address = vmcs_readl(GUEST_LINEAR_ADDRESS);
+	}
+	return kvm_setup_pio(vcpu, kvm_run, in, size, count, string, down,
+			     address, rep, port);
 }
 
 static void
@@ -1583,8 +1585,8 @@
 
 static int handle_cpuid(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
-	kvm_run->exit_reason = KVM_EXIT_CPUID;
-	return 0;
+	kvm_emulate_cpuid(vcpu);
+	return 1;
 }
 
 static int handle_rdmsr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
@@ -1920,10 +1922,10 @@
 
 	asm ("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS));
 
-	kvm_run->exit_type = 0;
 	if (fail) {
-		kvm_run->exit_type = KVM_EXIT_TYPE_FAIL_ENTRY;
-		kvm_run->exit_reason = vmcs_read32(VM_INSTRUCTION_ERROR);
+		kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+		kvm_run->fail_entry.hardware_entry_failure_reason
+			= vmcs_read32(VM_INSTRUCTION_ERROR);
 		r = 0;
 	} else {
 		/*
@@ -1933,19 +1935,20 @@
 			profile_hit(KVM_PROFILING, (void *)vmcs_readl(GUEST_RIP));
 
 		vcpu->launched = 1;
-		kvm_run->exit_type = KVM_EXIT_TYPE_VM_EXIT;
 		r = kvm_handle_exit(kvm_run, vcpu);
 		if (r > 0) {
 			/* Give scheduler a change to reschedule. */
 			if (signal_pending(current)) {
 				++kvm_stat.signal_exits;
 				post_kvm_run_save(vcpu, kvm_run);
+				kvm_run->exit_reason = KVM_EXIT_INTR;
 				return -EINTR;
 			}
 
 			if (dm_request_for_irq_injection(vcpu, kvm_run)) {
 				++kvm_stat.request_irq_exits;
 				post_kvm_run_save(vcpu, kvm_run);
+				kvm_run->exit_reason = KVM_EXIT_INTR;
 				return -EINTR;
 			}
 
diff -ur kvm-17/qemu/qemu-kvm.c kvm/qemu/qemu-kvm.c
--- kvm-17/qemu/qemu-kvm.c	2007-03-14 19:40:36.000000000 +0200
+++ kvm/qemu/qemu-kvm.c	2007-04-04 19:12:01.000000000 +0300
@@ -449,85 +449,6 @@
     return 0;
 }
 
-
-static int kvm_cpuid(void *opaque, uint64_t *rax, uint64_t *rbx, 
-		      uint64_t *rcx, uint64_t *rdx)
-{
-    CPUState **envs = opaque;
-    CPUState *saved_env;
-    uint32_t eax = *rax;
-
-    saved_env = env;
-    env = envs[0];
-
-    env->regs[R_EAX] = *rax;
-    env->regs[R_EBX] = *rbx;
-    env->regs[R_ECX] = *rcx;
-    env->regs[R_EDX] = *rdx;
-    helper_cpuid();
-    *rdx = env->regs[R_EDX];
-    *rcx = env->regs[R_ECX];
-    *rbx = env->regs[R_EBX];
-    *rax = env->regs[R_EAX];
-    // don't report long mode/syscall/nx if no native support
-    if (eax == 0x80000001) {
-	unsigned long h_eax = eax, h_edx;
-
-
-	// push/pop hack to workaround gcc 3 register pressure trouble
-	asm (
-#ifdef __x86_64__
-	     "push %%rbx; push %%rcx; cpuid; pop %%rcx; pop %%rbx"
-#else
-	     "push %%ebx; push %%ecx; cpuid; pop %%ecx; pop %%ebx"
-#endif
-	     : "+a"(h_eax), "=d"(h_edx));
-
-	// long mode
-	if ((h_edx & 0x20000000) == 0)
-	    *rdx &= ~0x20000000ull;
-	// syscall
-	if ((h_edx & 0x00000800) == 0)
-	    *rdx &= ~0x00000800ull;
-	// nx
-	if ((h_edx & 0x00100000) == 0)
-	    *rdx &= ~0x00100000ull;
-    }
-    // sysenter isn't supported on compatibility mode on AMD.  and syscall
-    // isn't supported in compatibility mode on Intel.  so advertise the
-    // actuall cpu, and say goodbye to migration between different vendors
-    // is you use compatibility mode.
-    if (eax == 0) {
-	uint32_t bcd[3];
-	asm (
-#ifdef __x86_64__
-	     "push %%rax; push %%rbx; push %%rcx; push %%rdx \n\t"
-	     "mov $0, %%eax \n\t"
-	     "cpuid \n\t"
-	     "mov (%%rsp), %%rax \n\t"
-	     "mov %%ebx, (%%rax) \n\t"
-	     "mov %%ecx, 4(%%rax) \n\t"
-	     "mov %%edx, 8(%%rax) \n\t"
-	     "pop %%rdx; pop %%rcx; pop %%rbx; pop %%rax"
-#else
-	     "push %%eax; push %%ebx; push %%ecx; push %%edx \n\t"
-	     "mov $0, %%eax \n\t"
-	     "cpuid \n\t"
-	     "mov (%%esp), %%eax \n\t"
-	     "mov %%ebx, (%%eax) \n\t"
-	     "mov %%ecx, 4(%%eax) \n\t"
-	     "mov %%edx, 8(%%eax) \n\t"
-	     "pop %%edx; pop %%ecx; pop %%ebx; pop %%eax"
-#endif
-	     : : "d"(bcd) : "memory");
-	*rbx = bcd[0];
-	*rcx = bcd[1];
-	*rdx = bcd[2];
-    }
-    env = saved_env;
-    return 0;
-}
-
 static int kvm_debug(void *opaque, int vcpu)
 {
     CPUState **envs = opaque;
@@ -679,7 +600,6 @@
 }
  
 static struct kvm_callbacks qemu_kvm_ops = {
-    .cpuid = kvm_cpuid,
     .debug = kvm_debug,
     .inb   = kvm_inb,
     .inw   = kvm_inw,
@@ -738,6 +658,78 @@
     kvm_finalize(kvm_context);
 }
 
+static void do_cpuid_ent(struct kvm_cpuid_entry *e, uint32_t function)
+{
+    EAX = function;
+    helper_cpuid();
+    e->function = function;
+    e->eax = EAX;
+    e->ebx = EBX;
+    e->ecx = ECX;
+    e->edx = EDX;
+    if (function == 1)
+	e->edx &= ~(1 << 12); /* disable mtrr support */
+    if (function == 0x80000001) {
+	unsigned long h_eax = function, h_edx;
+
+
+	// push/pop hack to workaround gcc 3 register pressure trouble
+	asm (
+#ifdef __x86_64__
+	     "push %%rbx; push %%rcx; cpuid; pop %%rcx; pop %%rbx"
+#else
+	     "push %%ebx; push %%ecx; cpuid; pop %%ecx; pop %%ebx"
+#endif
+	     : "+a"(h_eax), "=d"(h_edx));
+
+	// long mode
+	if ((h_edx & 0x20000000) == 0)
+	    e->edx &= ~0x20000000u;
+	// syscall
+	if ((h_edx & 0x00000800) == 0)
+	    e->edx &= ~0x00000800u;
+	// nx
+	if ((h_edx & 0x00100000) == 0)
+	    e->edx &= ~0x00100000u;
+    }
+}
+
+int kvm_qemu_init_env(CPUState *cenv)
+{
+    struct kvm_cpuid_entry cpuid_ent[100];
+    int cpuid_nent = 0;
+    CPUState *oldenv = env;
+    CPUState copy;
+    uint32_t i, limit;
+#define DECLARE_HOST_REGS
+#include "hostregs_helper.h"
+
+#define SAVE_HOST_REGS
+#include "hostregs_helper.h"
+
+    copy = *cenv;
+    env = cenv;
+
+    EAX = 0;
+    helper_cpuid();
+    limit = EAX;
+    for (i = 0; i <= limit; ++i)
+	do_cpuid_ent(&cpuid_ent[cpuid_nent++], i);
+    EAX = 0x80000000;
+    helper_cpuid();
+    limit = EAX;
+    for (i = 0x80000000; i <= limit; ++i)
+	do_cpuid_ent(&cpuid_ent[cpuid_nent++], i);
+
+    kvm_setup_cpuid(kvm_context, 0, cpuid_nent, cpuid_ent);
+
+#include "hostregs_helper.h"
+
+    env = oldenv;
+
+    return 0;
+}
+
 int kvm_update_debugger(CPUState *env)
 {
     struct kvm_debug_guest dbg;
diff -ur kvm-17/qemu/qemu-kvm.h kvm/qemu/qemu-kvm.h
--- kvm-17/qemu/qemu-kvm.h	2007-03-14 16:50:32.000000000 +0200
+++ kvm/qemu/qemu-kvm.h	2007-03-28 11:58:27.000000000 +0200
@@ -10,6 +10,7 @@
 void kvm_save_registers(CPUState *env);
 int kvm_cpu_exec(CPUState *env);
 int kvm_update_debugger(CPUState *env);
+int kvm_qemu_init_env(CPUState *env);
 
 int kvm_physical_memory_set_dirty_tracking(int enable);
 int kvm_update_dirty_pages_log(void);
diff -ur kvm-17/qemu/target-i386/helper2.c kvm/qemu/target-i386/helper2.c
--- kvm-17/qemu/target-i386/helper2.c	2007-02-11 16:23:08.000000000 +0200
+++ kvm/qemu/target-i386/helper2.c	2007-04-04 19:12:01.000000000 +0300
@@ -144,6 +144,7 @@
     kqemu_init(env);
 #endif
 #ifdef USE_KVM
+    kvm_qemu_init_env(env);
     env->ready_for_interrupt_injection = 1;
 #endif
     return env;
diff -ur kvm-17/user/kvmctl.c kvm/user/kvmctl.c
--- kvm-17/user/kvmctl.c	2007-03-15 16:57:16.000000000 +0200
+++ kvm/user/kvmctl.c	2007-04-04 19:19:41.000000000 +0300
@@ -24,7 +24,7 @@
 #include <sys/ioctl.h>
 #include "kvmctl.h"
 
-#define EXPECTED_KVM_API_VERSION 4
+#define EXPECTED_KVM_API_VERSION 9
 
 #if EXPECTED_KVM_API_VERSION != KVM_API_VERSION
 #error libkvm: userspace and kernel version mismatch
@@ -46,6 +46,7 @@
 	int fd;
 	int vm_fd;
 	int vcpu_fd[1];
+	struct kvm_run *run[1];
 	/// Callbacks that KVM uses to emulate various unvirtualizable functionality
 	struct kvm_callbacks *callbacks;
 	void *opaque;
@@ -228,6 +229,7 @@
 {
 	unsigned long dosmem = 0xa0000;
 	unsigned long exmem = 0xc0000;
+	long mmap_size;
 	int fd = kvm->fd;
 	int zfd;
 	int r;
@@ -286,6 +288,17 @@
 		return -1;
 	}
 	kvm->vcpu_fd[0] = r;
+	mmap_size = ioctl(kvm->fd, KVM_GET_VCPU_MMAP_SIZE, 0);
+	if (mmap_size == -1) {
+		fprintf(stderr, "get vcpu mmap size: %m\n");
+		return -1;
+	}
+	kvm->run[0] = mmap(0, mmap_size, PROT_READ|PROT_WRITE, MAP_SHARED,
+			   kvm->vcpu_fd[0], 0);
+	if (kvm->run[0] == MAP_FAILED) {
+		fprintf(stderr, "mmap vcpu area: %m\n");
+		return -1;
+	}
 	return 0;
 }
 
@@ -374,92 +387,44 @@
 #endif /* KVM_GET_MEM_MAP */
 }
 
-static int more_io(struct kvm_run *run, int first_time)
-{
-	if (!run->io.rep)
-		return first_time;
-	else
-		return run->io.count != 0;
-}
-
 static int handle_io(kvm_context_t kvm, struct kvm_run *run, int vcpu)
 {
 	uint16_t addr = run->io.port;
-	struct kvm_regs regs;
-	int first_time = 1;
-	int delta;
-	struct translation_cache tr;
-	int _in = (run->io.direction == KVM_EXIT_IO_IN);
 	int r;
+	int i;
+	void *p = (void *)run + run->io.data_offset;
 
-	translation_cache_init(&tr);
-
-	if (run->io.string || _in) {
-		r = ioctl(kvm->vcpu_fd[vcpu], KVM_GET_REGS, &regs);
-		if (r == -1)
-			return -errno;
-	}
-
-	delta = run->io.string_down ? -run->io.size : run->io.size;
-
-	while (more_io(run, first_time)) {
-		void *value_addr;
-
-		if (!run->io.string) {
-			if (_in)
-				value_addr = &regs.rax;
-			else
-				value_addr = &run->io.value;
-		} else {
-			r = translate(kvm, vcpu, &tr, run->io.address, 
-				      &value_addr);
-			if (r) {
-				fprintf(stderr, "failed translating I/O address %llx\n",
-					run->io.address);
-				return r;
-			}
-		}
-
+	for (i = 0; i < run->io.count; ++i) {
 		switch (run->io.direction) {
-		case KVM_EXIT_IO_IN: {
+		case KVM_EXIT_IO_IN:
 			switch (run->io.size) {
-			case 1: {
-				uint8_t value;
-				r = kvm->callbacks->inb(kvm->opaque, addr, &value);
-				*(uint8_t *)value_addr = value;
+			case 1:
+				r = kvm->callbacks->inb(kvm->opaque, addr, p);
 				break;
-			}
-			case 2: {
-				uint16_t value;
-				r = kvm->callbacks->inw(kvm->opaque, addr, &value);
-				*(uint16_t *)value_addr = value;
+			case 2:
+				r = kvm->callbacks->inw(kvm->opaque, addr, p);
 				break;
-			}
-			case 4: {
-				uint32_t value;
-				r = kvm->callbacks->inl(kvm->opaque, addr, &value);
-				*(uint32_t *)value_addr = value;
+			case 4:
+				r = kvm->callbacks->inl(kvm->opaque, addr, p);
 				break;
-			}
 			default:
 				fprintf(stderr, "bad I/O size %d\n", run->io.size);
 				return -EMSGSIZE;
 			}
 			break;
-		}
 		case KVM_EXIT_IO_OUT:
-			switch (run->io.size) {
+		    	switch (run->io.size) {
 			case 1:
 				r = kvm->callbacks->outb(kvm->opaque, addr,
-						     *(uint8_t *)value_addr);
+						     *(uint8_t *)p);
 				break;
 			case 2:
 				r = kvm->callbacks->outw(kvm->opaque, addr,
-						     *(uint16_t *)value_addr);
+						     *(uint16_t *)p);
 				break;
 			case 4:
 				r = kvm->callbacks->outl(kvm->opaque, addr,
-						     *(uint32_t *)value_addr);
+						     *(uint32_t *)p);
 				break;
 			default:
 				fprintf(stderr, "bad I/O size %d\n", run->io.size);
@@ -470,36 +435,11 @@
 			fprintf(stderr, "bad I/O direction %d\n", run->io.direction);
 			return -EPROTO;
 		}
-		if (run->io.string) {
-			run->io.address += delta;
-			switch (run->io.direction) {
-			case KVM_EXIT_IO_IN:  regs.rdi += delta; break;
-			case KVM_EXIT_IO_OUT: regs.rsi += delta; break;
-			}
-			if (run->io.rep) {
-				--regs.rcx;
-				--run->io.count;
-			}
-		}
-		first_time = 0;
-		if (r) {
-			int savedret = r;
-			r = ioctl(kvm->vcpu_fd[vcpu], KVM_SET_REGS, &regs);
-			if (r == -1)
-				return -errno;
 
-			return savedret;
-		}
+		p += run->io.size;
 	}
 
-	if (run->io.string || _in) {
-		r = ioctl(kvm->vcpu_fd[vcpu], KVM_SET_REGS, &regs);
-		if (r == -1)
-			return -errno;
-
-	}
-
-	run->emulated = 1;
+	run->io_completed = 1;
 	return 0;
 }
 
@@ -654,31 +594,6 @@
 		sregs.efer);
 }
 
-static int handle_cpuid(kvm_context_t kvm, struct kvm_run *run, int vcpu)
-{
-	struct kvm_regs regs;
-	uint32_t orig_eax;
-	uint64_t rax, rbx, rcx, rdx;
-	int r;
-
-	kvm_get_regs(kvm, vcpu, &regs);
-	orig_eax = regs.rax;
-	rax = regs.rax;
-	rbx = regs.rbx;
-	rcx = regs.rcx;
-	rdx = regs.rdx;
-	r = kvm->callbacks->cpuid(kvm->opaque, &rax, &rbx, &rcx, &rdx);
-	regs.rax = rax;
-	regs.rbx = rbx;
-	regs.rcx = rcx;
-	regs.rdx = rdx;
-	if (orig_eax == 1)
-		regs.rdx &= ~(1ull << 12); /* disable mtrr support */
-	kvm_set_regs(kvm, vcpu, &regs);
-	run->emulated = 1;
-	return r;
-}
-
 static int handle_mmio(kvm_context_t kvm, struct kvm_run *kvm_run)
 {
 	unsigned long addr = kvm_run->mmio.phys_addr;
@@ -715,7 +630,7 @@
 			r = kvm->callbacks->readq(kvm->opaque, addr, (uint64_t *)data);
 			break;
 		}
-		kvm_run->mmio_completed = 1;
+		kvm_run->io_completed = 1;
 	}
 	return r;
 }
@@ -755,71 +670,63 @@
 {
 	int r;
 	int fd = kvm->vcpu_fd[vcpu];
-	struct kvm_run kvm_run = {
-		.emulated = 0,
-		.mmio_completed = 0,
-	};
+	struct kvm_run *run = kvm->run[vcpu];
 
 again:
-	kvm_run.request_interrupt_window = try_push_interrupts(kvm);
-	pre_kvm_run(kvm, &kvm_run);
-	r = ioctl(fd, KVM_RUN, &kvm_run);
-	post_kvm_run(kvm, &kvm_run);
+	run->request_interrupt_window = try_push_interrupts(kvm);
+	pre_kvm_run(kvm, run);
+	r = ioctl(fd, KVM_RUN, 0);
+	post_kvm_run(kvm, run);
 
-	kvm_run.emulated = 0;
-	kvm_run.mmio_completed = 0;
+	run->io_completed = 0;
 	if (r == -1 && errno != EINTR) {
 		r = -errno;
 		printf("kvm_run: %m\n");
 		return r;
 	}
 	if (r == -1) {
-		r = handle_io_window(kvm, &kvm_run);
+		r = handle_io_window(kvm, run);
 		goto more;
 	}
-	switch (kvm_run.exit_type) {
-	case KVM_EXIT_TYPE_FAIL_ENTRY:
-		fprintf(stderr, "kvm_run: failed entry, reason %u\n", 
-			kvm_run.exit_reason & 0xffff);
-		return -ENOEXEC;
-		break;
-	case KVM_EXIT_TYPE_VM_EXIT:
-		switch (kvm_run.exit_reason) {
+	if (1) {
+		switch (run->exit_reason) {
 		case KVM_EXIT_UNKNOWN:
 			fprintf(stderr, "unhandled vm exit:  0x%x\n", 
-			       kvm_run.hw.hardware_exit_reason);
+				(unsigned)run->hw.hardware_exit_reason);
 			kvm_show_regs(kvm, vcpu);
 			abort();
 			break;
+		case KVM_EXIT_FAIL_ENTRY:
+			fprintf(stderr, "kvm_run: failed entry, reason %u\n", 
+				(unsigned)run->fail_entry.hardware_entry_failure_reason & 0xffff);
+			return -ENOEXEC;
+			break;
 		case KVM_EXIT_EXCEPTION:
 			fprintf(stderr, "exception %d (%x)\n", 
-			       kvm_run.ex.exception,
-			       kvm_run.ex.error_code);
+			       run->ex.exception,
+			       run->ex.error_code);
 			kvm_show_regs(kvm, vcpu);
 			abort();
 			break;
 		case KVM_EXIT_IO:
-			r = handle_io(kvm, &kvm_run, vcpu);
-			break;
-		case KVM_EXIT_CPUID:
-			r = handle_cpuid(kvm, &kvm_run, vcpu);
+			r = handle_io(kvm, run, vcpu);
 			break;
 		case KVM_EXIT_DEBUG:
-			r = handle_debug(kvm, &kvm_run, vcpu);
+			r = handle_debug(kvm, run, vcpu);
 			break;
 		case KVM_EXIT_MMIO:
-			r = handle_mmio(kvm, &kvm_run);
+			r = handle_mmio(kvm, run);
 			break;
 		case KVM_EXIT_HLT:
-			r = handle_halt(kvm, &kvm_run, vcpu);
+			r = handle_halt(kvm, run, vcpu);
 			break;
 		case KVM_EXIT_IRQ_WINDOW_OPEN:
 			break;
 		case KVM_EXIT_SHUTDOWN:
-			r = handle_shutdown(kvm, &kvm_run, vcpu);
+			r = handle_shutdown(kvm, run, vcpu);
 			break;
 		default:
-			fprintf(stderr, "unhandled vm exit: 0x%x\n", kvm_run.exit_reason);
+			fprintf(stderr, "unhandled vm exit: 0x%x\n", run->exit_reason);
 			kvm_show_regs(kvm, vcpu);
 			abort();
 			break;
@@ -843,3 +750,45 @@
 {
 	return ioctl(kvm->vcpu_fd[vcpu], KVM_DEBUG_GUEST, dbg);
 }
+
+int kvm_setup_cpuid(kvm_context_t kvm, int vcpu, int nent,
+		    struct kvm_cpuid_entry *entries)
+{
+	struct kvm_cpuid *cpuid;
+	int r;
+
+	cpuid = malloc(sizeof(*cpuid) + nent * sizeof(*entries));
+	if (!cpuid)
+		return -ENOMEM;
+
+	cpuid->nent = nent;
+	memcpy(cpuid->entries, entries, nent * sizeof(*entries));
+	r = ioctl(kvm->vcpu_fd[vcpu], KVM_SET_CPUID, cpuid);
+
+	free(cpuid);
+	return r;
+}
+
+int kvm_set_signal_mask(kvm_context_t kvm, int vcpu, const sigset_t *sigset)
+{
+	struct kvm_signal_mask *sigmask;
+	int r;
+
+	if (!sigset) {
+		r = ioctl(kvm->vcpu_fd[vcpu], KVM_SET_SIGNAL_MASK, NULL);
+		if (r == -1)
+			r = -errno;
+		return r;
+	}
+	sigmask = malloc(sizeof(*sigmask) + sizeof(*sigset));
+	if (!sigmask)
+		return -ENOMEM;
+
+	sigmask->len = 8;
+	memcpy(sigmask->sigset, sigset, sizeof(*sigset));
+	r = ioctl(kvm->vcpu_fd[vcpu], KVM_SET_SIGNAL_MASK, sigmask);
+	if (r == -1)
+		r = -errno;
+	free(sigmask);
+	return r;
+}
diff -ur kvm-17/user/kvmctl.h kvm/user/kvmctl.h
--- kvm-17/user/kvmctl.h	2007-03-14 16:45:30.000000000 +0200
+++ kvm/user/kvmctl.h	2007-04-04 19:19:41.000000000 +0300
@@ -8,6 +8,7 @@
 #define __user /* temporary, until installed via make headers_install */
 #include <linux/kvm.h>
 #include <stdint.h>
+#include <signal.h>
 
 struct kvm_context;
 
@@ -21,8 +22,6 @@
  * accessing hardware devices via MMIO or regular IO.
  */
 struct kvm_callbacks {
-    int (*cpuid)(void *opaque, 
-		  uint64_t *rax, uint64_t *rbx, uint64_t *rcx, uint64_t *rdx);
 	/// For 8bit IO reads from the guest (Usually when executing 'inb')
     int (*inb)(void *opaque, uint16_t addr, uint8_t *data);
 	/// For 16bit IO reads from the guest (Usually when executing 'inw')
@@ -215,6 +214,35 @@
 int kvm_guest_debug(kvm_context_t, int vcpu, struct kvm_debug_guest *dbg);
 
 /*!
+ * \brief Setup a vcpu's cpuid instruction emulation
+ *
+ * Set up a table of cpuid function to cpuid outputs.\n
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param vcpu Which virtual CPU should be initialized
+ * \param nent number of entries to be installed
+ * \param entries cpuid function entries table
+ * \return 0 on success, or -errno on error
+ */
+int kvm_setup_cpuid(kvm_context_t kvm, int vcpu, int nent,
+		    struct kvm_cpuid_entry *entries);
+
+/*!
+ * \brief Set a vcpu's signal mask for guest mode
+ *
+ * A vcpu can have different signals blocked in guest mode and user mode.
+ * This allows guest execution to be interrupted on a signal, without requiring
+ * that the signal be delivered to a signal handler (the signal can be
+ * dequeued using sigwait(2).
+ *
+ * \param kvm Pointer to the current kvm_context
+ * \param vcpu Which virtual CPU should be initialized
+ * \param sigset signal mask for guest mode
+ * \return 0 on success, or -errno on error
+ */
+int kvm_set_signal_mask(kvm_context_t kvm, int vcpu, const sigset_t *sigset);
+
+/*!
  * \brief Dump all VCPU information
  *
  * This dumps \b all the information that KVM has about a virtual CPU, namely:
diff -ur kvm-17/user/main.c kvm/user/main.c
--- kvm-17/user/main.c	2007-01-29 14:43:53.000000000 +0200
+++ kvm/user/main.c	2007-04-04 19:19:41.000000000 +0300
@@ -23,13 +23,6 @@
 
 kvm_context_t kvm;
 
-static int test_cpuid(void *opaque, uint64_t *rax, uint64_t *rbx, 
-		       uint64_t *rcx, uint64_t *rdx)
-{
-    printf("cpuid 0x%lx\n", (uint32_t)*rax);
-    return 0;
-}
-
 static int test_inb(void *opaque, uint16_t addr, uint8_t *value)
 {
     printf("inb 0x%x\n", addr);
@@ -112,7 +105,6 @@
 }
 
 static struct kvm_callbacks test_callbacks = {
-    .cpuid       = test_cpuid,
     .inb         = test_inb,
     .inw         = test_inw,
     .inl         = test_inl,

[-- Attachment #3: Type: text/plain, Size: 345 bytes --]

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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> 
> Please test the attached patch, against kvm-17.  This is subversion 
> revision 4546 and git commit c01571ed56754dfea458cc37d553c360082411a1.
> 

Fails.

I notice that a lot of new code is related to pio.  Seeing that it locks up when
the VPN starts using the network, I sprinkled some printk's around and have
discovered that we enter an long running (endless?) loop in kvm_run. 
run->exit_reason is KVM_EXIT_IO, to the naive observer (me) it would appear that
an issue exists somewhere inside of handle_io().

Les


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi:

Leslie Mann <lmann@...> writes:

> Fails.
> 
> I notice that a lot of new code is related to pio.  Seeing that it locks up 
> when
> the VPN starts using the network, I sprinkled some printk's around and have
> discovered that we enter an long running (endless?) loop in kvm_run. 
> run->exit_reason is KVM_EXIT_IO, to the naive observer (me) it would appear
> that
> an issue exists somewhere inside of handle_io().
> 

FYI, a switch to rtl8139 from the default NE2000 nic has "cured" the problem
under both kvm-18 and kvm-svn.

Les


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

Leslie Mann wrote:
> Avi:
>
> Leslie Mann <lmann@...> writes:
>
>   
>> Fails.
>>
>> I notice that a lot of new code is related to pio.  Seeing that it locks up 
>> when
>> the VPN starts using the network, I sprinkled some printk's around and have
>> discovered that we enter an long running (endless?) loop in kvm_run. 
>> run->exit_reason is KVM_EXIT_IO, to the naive observer (me) it would appear
>> that
>> an issue exists somewhere inside of handle_io().
>>
>>     
>
> FYI, a switch to rtl8139 from the default NE2000 nic has "cured" the problem
> under both kvm-18 and kvm-svn.
>   

That's a good indication the problem is with handling I/O instructions. 
I have an image that exhibits similar behavior (but on Windows chkdsk on
boot) so I'll try debugging that.  If that does not work I'll try to
send you debug patches.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> That's a good indication the problem is with handling I/O instructions. 
> I have an image that exhibits similar behavior (but on Windows chkdsk on
> boot) so I'll try debugging that.  If that does not work I'll try to
> send you debug patches.
> 

Would be glad to help out with any debugging that you would like me to perform.

Les



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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

[-- Attachment #1: Type: text/plain, Size: 390 bytes --]

Leslie Mann wrote:
> FYI, a switch to rtl8139 from the default NE2000 nic has "cured" the problem
> under both kvm-18 and kvm-svn.
>   

The hint finally sank in, I was able to reproduce after switching to 
ne2k (I usually use rtl8139).  The attached patch (for kvm-18) fixes it 
for me.  Confirmation would be appreciated.

-- 
error compiling committee.c: too many arguments to function


[-- Attachment #2: kvm-pio-fix.patch --]
[-- Type: text/x-patch, Size: 379 bytes --]

diff --git a/kernel/kvm_main.c b/kernel/kvm_main.c
index 3e06c56..11a3cab 100644
--- a/kernel/kvm_main.c
+++ b/kernel/kvm_main.c
@@ -1729,6 +1729,11 @@ int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
 		return 0;
 	}
 
+	if (!count) {
+		kvm_arch_ops->skip_emulated_instruction(vcpu);
+		return 1;
+	}
+
 	now = min(count, PAGE_SIZE / size);
 
 	if (!down)

[-- Attachment #3: Type: text/plain, Size: 286 bytes --]

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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Leslie Mann]

Avi Kivity <avi@...> writes:

> 
> Leslie Mann wrote:
> > FYI, a switch to rtl8139 from the default NE2000 nic has "cured" the problem
> > under both kvm-18 and kvm-svn.
> >   
> 
> The hint finally sank in, I was able to reproduce after switching to 
> ne2k (I usually use rtl8139).  The attached patch (for kvm-18) fixes it 
> for me.  Confirmation would be appreciated.
> 

Avi:

That seems to have done the trick, issue resolved in kvm-18 with that patch!

Thanks 
Les



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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity]

[-- Attachment #1: Type: text/plain, Size: 936 bytes --]

Leslie Mann wrote:
> Avi Kivity <avi@...> writes:
>
>   
>> Please test the attached patch, against kvm-17.  This is subversion 
>> revision 4546 and git commit c01571ed56754dfea458cc37d553c360082411a1.
>>
>>     
>
> Fails.
>
> I notice that a lot of new code is related to pio.  Seeing that it locks up when
> the VPN starts using the network, I sprinkled some printk's around and have
> discovered that we enter an long running (endless?) loop in kvm_run. 
> run->exit_reason is KVM_EXIT_IO, to the naive observer (me) it would appear that
> an issue exists somewhere inside of handle_io().
>
>   

The images that were reported to me as hanging seem to run fine, so 
we're back to debugging this remotely.  I now have more time so 
hopefully we'll have a shorter loop.

Please apply the attached debug patch to kvm-18 so we can see what 
handle_io() is looking at.


-- 
error compiling committee.c: too many arguments to function


[-- Attachment #2: handle_io-debug.patch --]
[-- Type: text/x-patch, Size: 597 bytes --]

Index: user/kvmctl.c
===================================================================
--- user/kvmctl.c	(revision 4622)
+++ user/kvmctl.c	(working copy)
@@ -421,6 +421,16 @@
 	int i;
 	void *p = (void *)run + run->io.data_offset;
 
+	do {
+	    static int n;
+
+	    if (n++ % 100000 != 0)
+		break;
+	    printf("handle_io: port %x dir %d size %d count %ld offset %lx\n",
+		   run->io.port, run->io.direction, run->io.size,
+		   (long)run->io.count, (long)run->io.data_offset);
+	} while (0);
+
 	for (i = 0; i < run->io.count; ++i) {
 		switch (run->io.direction) {
 		case KVM_EXIT_IO_IN:

[-- Attachment #3: Type: text/plain, Size: 345 bytes --]

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Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Carsten Emde]

[-- Attachment #1: Type: text/plain, Size: 943 bytes --]

Avi,
>>> Please test the attached patch [..]
Same problem here, except that I can reproduce the network hanger just 
by mounting an SMB share and producing a certain network load, for 
example copying a file of several megabytes or rapidly moving the slider 
up and down. Setting the network device to "-net nic,model=rtl8139" also 
"cures" the problem. Earlier versions such as kvm-13 did not have this 
problem.

CPU:
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca 
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm 
constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm

Linux: 2.6.20-1.3059.fc7 #1 SMP
Windows: XP SP2

Strace -ttT when it hangs ->  kvm-netloop.trace
Output after starting qemu until it hangs -> kvm-netloop.output

Do you need any more information or whatever testing? I'll be glad to help.

	--cbe

[-- Attachment #2: kvm-netloop.trace --]
[-- Type: text/plain, Size: 9707 bytes --]

08:28:44.561412 clock_gettime(CLOCK_MONOTONIC, {949, 652162158}) = 0 <0.000010>
08:28:44.561513 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.561673 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.561778 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.561882 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.561986 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.562090 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.562193 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.562292 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.562378 clock_gettime(CLOCK_MONOTONIC, {949, 653128044}) = 0 <0.000010>
08:28:44.562479 sigreturn()             = ? (mask now []) <0.000011>
08:28:44.562639 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.562744 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.562848 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.562952 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.563056 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.563159 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.563259 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.563344 clock_gettime(CLOCK_MONOTONIC, {949, 654093942}) = 0 <0.000010>
08:28:44.563445 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.563605 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.563710 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.563813 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.563917 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.564021 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.564125 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.564224 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.564305 clock_gettime(CLOCK_MONOTONIC, {949, 778752004}) = 0 <0.000015>
08:28:44.688112 sigreturn()             = ? (mask now []) <0.000011>
08:28:44.688276 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.688366 clock_gettime(CLOCK_MONOTONIC, {949, 779116646}) = 0 <0.000009>
08:28:44.688468 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.688630 ioctl(7, 0xae80, 0)     = 0 <0.000020>
08:28:44.688740 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.688845 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.688950 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.689054 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.689159 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.689259 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.689345 clock_gettime(CLOCK_MONOTONIC, {949, 780096059}) = 0 <0.000010>
08:28:44.689447 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.689608 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.689713 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.689818 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.689922 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.690026 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.690130 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.690230 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.690311 clock_gettime(CLOCK_MONOTONIC, {949, 781066069}) = 0 <0.000010>
08:28:44.690417 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.690578 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.690682 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.690787 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.690891 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.690995 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.691099 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.691199 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.691280 clock_gettime(CLOCK_MONOTONIC, {949, 782042550}) = 0 <0.000010>
08:28:44.691394 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.691555 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.691659 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.691764 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.691868 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.691972 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.692076 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.692176 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.692257 clock_gettime(CLOCK_MONOTONIC, {949, 783011694}) = 0 <0.000009>
08:28:44.692363 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.692524 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.692628 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.692733 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.692837 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.692941 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.693045 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.693145 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.693225 clock_gettime(CLOCK_MONOTONIC, {949, 783975470}) = 0 <0.000010>
08:28:44.693331 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.693492 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.693596 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.693701 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.693805 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.693909 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.694013 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.694113 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.694193 clock_gettime(CLOCK_MONOTONIC, {949, 784943744}) = 0 <0.000009>
08:28:44.694294 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.694460 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.694565 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.694669 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.694773 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.694877 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.694981 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.695081 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.695161 clock_gettime(CLOCK_MONOTONIC, {949, 785911445}) = 0 <0.000010>
08:28:44.695262 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.816295 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.816388 clock_gettime(CLOCK_MONOTONIC, {949, 907138851}) = 0 <0.000010>
08:28:44.816491 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.816653 ioctl(7, 0xae80, 0)     = 0 <0.000019>
08:28:44.816761 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.816866 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.816970 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.817075 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.817175 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.817255 clock_gettime(CLOCK_MONOTONIC, {949, 908010503}) = 0 <0.000010>
08:28:44.817361 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.817522 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.817627 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.817731 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.817835 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.817940 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.818044 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.818144 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.818224 clock_gettime(CLOCK_MONOTONIC, {949, 908974684}) = 0 <0.000009>
08:28:44.818330 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.818491 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.818596 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.818700 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.818804 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.818908 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.819012 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.819111 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.819192 clock_gettime(CLOCK_MONOTONIC, {949, 909941740}) = 0 <0.000009>
08:28:44.819292 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.819458 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.819563 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.819667 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.819771 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.819875 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.819979 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.820079 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.820159 clock_gettime(CLOCK_MONOTONIC, {949, 910909617}) = 0 <0.000009>
08:28:44.820260 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.820426 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.820530 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.820634 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.820738 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.820842 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.820946 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.821046 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.821126 clock_gettime(CLOCK_MONOTONIC, {949, 911876793}) = 0 <0.000009>
08:28:44.821228 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.821393 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.821497 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.821602 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.821706 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.821810 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.821914 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822013 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.822094 clock_gettime(CLOCK_MONOTONIC, {949, 912844007}) = 0 <0.000010>
08:28:44.822195 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.822359 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822464 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822568 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822672 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822776 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822880 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.822980 --- SIGIO (I/O possible) @ 0 (0) ---
08:28:44.823060 clock_gettime(CLOCK_MONOTONIC, {949, 913810441}) = 0 <0.000010>
08:28:44.823161 sigreturn()             = ? (mask now []) <0.000010>
08:28:44.823334 ioctl(7, 0xae80, 0)     = 0 <0.000016>
08:28:44.823439 ioctl(7, 0xae80, 0)     = 0 <0.000017>
08:28:44.823544 ioctl(7, 0xae80, 0)     = 0 <0.000016>

[-- Attachment #3: kvm-netloop.output --]
[-- Type: text/plain, Size: 1664 bytes --]

handle_io: port d dir 1 size 1 count 1 offset 1000
handle_io: port 1f7 dir 0 size 1 count 1 offset 1000
handle_io: port cf8 dir 1 size 4 count 1 offset 1000
handle_io: port 3ce dir 1 size 2 count 1 offset 1000
handle_io: port c108 dir 1 size 1 count 1 offset 1000
handle_io: port c10b dir 1 size 1 count 1 offset 1000
handle_io: port 379 dir 0 size 1 count 1 offset 1000
handle_io: port cf8 dir 1 size 4 count 1 offset 1000
handle_io: port c000 dir 1 size 1 count 1 offset 1000
handle_io: port 40 dir 0 size 1 count 1 offset 1000
handle_io: port 1f5 dir 1 size 1 count 1 offset 1000
handle_io: port c10b dir 1 size 1 count 1 offset 1000
handle_io: port c002 dir 1 size 1 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000
handle_io: port c110 dir 0 size 2 count 1 offset 1000


[-- Attachment #4: Type: text/plain, Size: 345 bytes --]

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