Re: kvm-18 breaks Cisco VPN on WinXP SP1

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

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.


-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV