Re: [Qemu-devel] [PATCH] Make the ELF loader aware of backwards compatibility

[Alexander Graf]

On 28.02.2009, at 16:30, Blue Swirl wrote:

> On 2/28/09, Alexander Graf <address@hidden> wrote:
> > Most 64 bit architectures I'm aware of support running 32 bit code
> > of the same architecture as well.
>
> For Sparc64 this is only true for userland, kernel level code is not
> compatible at all. Sparc64 kernel can run Sparc64 and Sparc32
> binaries, but a Sparc32 kernel will crash on Sparc64.
>
> >  /* Load a 32 bit BIOS also on 64 bit machines */
> > -#if defined (TARGET_PPC64) && defined(CONFIG_USER_ONLY)
> > +#if defined (TARGET_PPC64)
> >  #define ELF_MACHINE     EM_PPC64
> >  #else
> >  #define ELF_MACHINE     EM_PPC
>
> The comment should be removed with the hack.

I agree.

Any functional issues with this patch? -kernel for ppc64 still doesn't  
work with current SVN :-).

Alex