Re: [Qemu-devel] PC machine types switched to SeaBIOS/gPXE

[Alexander Graf]

On 10.11.2009, at 14:07, Avi Kivity wrote:

> On 11/10/2009 03:03 PM, Alexander Graf wrote:
> > > Anywhere you put it the bios has a right to trample.  Of course  
> > > our bios (and its maintainer) are cooperative, but there's not  
> > > reason to impose on that if we can do the right thing and load the  
> > > data at the right moment.
> >
> >
> > Right. The only thing we're missing is soft breakpoints set in gdb  
> > when running the guest with -s -S, as the guest kernel just isn't  
> > there by then yet.
>
> Copying things around in int 19 would also break this.

Yeah, I'm not pro the copying idea. This was more of a general remark  
wrt what regressions we introduce.

> > But I guess we can live without that feature, as long as the rest  
> > works.
>
> You can put a hardware breakpoint on the ELF entry point and then  
> place your soft breakpoints.

In fact when you have a working hardware breakpoint implementation you  
can still set the breakpoint with -s -S.

Alex