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

[Avi Kivity]

On 11/18/2009 11:39 AM, Gleb Natapov wrote:
>
>> Hi Avi,
>>
>> Can you send the full qemu command line that you used?  I can't seem
>> to reproduce this on my setup.
>>
>> I do see an issue if SeaBIOS's reboot vector is called (eg, by using
>> "sendkey ctrl-alt-delete" while still in the bios) because seabios
>> allows gpxe to modify itself, and on a seabios only reboot the gpxe
>> rom isn't recopied and gpxe therefore gets confused.  However, on a
>> linux invoked reboot, it looks like a full machine reset occurs and
>> qemu recopies the gpxe rom, so that doesn't seem to be an issue.
>>
>>      
> Do we have the same problem with tpr patching rom (vapic,bin)? It modifies
> itself too.
>    

But a reset will reload it.

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