[gPXE] [Qemu-devel] Stack corruption problem with SeaBIOS/gPXE under QEMU

[Avi Kivity]

On 11/18/2009 04:19 PM, Gleb Natapov wrote:
>>>
>>> Do we have the same problem with tpr patching rom (vapic,bin)? It modifies
>>> itself too.
>>>        
>> But a reset will reload it.
>>
>>      
> Correct, but Kevin says "sendkey ctrl-alt-delete" jumps to SeaBIOS's
> reboot vector without issuing system reset. I am talking about this situation.
>    

That's only if we're in the bios.  If an OS has taken over, it will 
issue a proper reset.  If an OS has not taken over (DOS won't, probably) 
then it isn't Windows and the vapic payload hasn't had a chance to 
modify itself.

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