Re: [Qemu-devel] [PATCH] Add multi-boot kernel loading support

[Rene Rebe]

Alexander Graf wrote:
> On 02.02.2009, at 23:42, Anthony Liguori wrote:
>
> > Rene Rebe wrote:
> > > Hi all,
> > >
> > > Alexander Graf implemented multi-boot kernel loading during
> > > his work to run Darwin inside Qemu/KVM. As the boot loader
> > > expects to load the kernel in an EFI environment a custom
> > > booter is used to load the kernel using a legacy BIOS.
> > >
> > > This is a port of the patch to the new extload / INT 19
> > > machinery (including minor cleanups).
> > >
> > > Signed-off-by: René Rebe <address@hidden>
> > >
> > > Index: elf_ops.h
> > > ===================================================================
> > > --- elf_ops.h    (revision 6501)
> > > +++ elf_ops.h    (working copy)
> > > @@ -195,6 +195,10 @@
> > >     }
> > >
> > >     if (ELF_MACHINE != ehdr.e_machine)
> > > +#if (ELF_MACHINE == EM_X86_64) && !defined(CONFIG_USER_ONLY)
> > > +      /* x86_64 systems can run i386 code as well */
> > > +      if(ehdr.e_machine != EM_386)
> > > +#endif
> > >         goto fail;
> > >
> > >     if (pentry)
> >
> > Seems like an unrelated fix.
>
> Actually it's not. If you want to load a 32-bit elf (multiboot) 
> executable on an x86_64 system, you need this patch.

Thanks, I was just about to re-reply to the other mail with this
question lost while answering.

--
  René Rebe - ExactCODE GmbH - Europe, Germany, Berlin
  http://exactcode.de | http://t2-project.org | http://rene.rebe.name