Re: [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.