Re: [Qemu-devel] Patch: generate a DBF when a GPF could not be delivered on x86

[Bernhard Kauer]

On Wed, Mar 28, 2007 at 10:13:49AM +0200, Sebastian Kaliszewski wrote:
> Bernhard Kauer wrote:
> >Qemu does not generate a double fault (DBF) on x86, if a general protection
> >fault could not be delivered. Instead it hangs in a loop.
> >
> >The patch fix this bug by checking whether we are already in a GPF 
> >exception.
> 
> If you're at it, maybe add triple fault handling (ie exception if DBF 
> handler) -- it should reset CPU.

There are many things missing in the x86 exception handling. For example
the case PF -> PF is also not handled.


    Bernhard Kauer