> - read four bytes from under the fw_cfg selector QEMU_CFG_KERNEL_SIZE
>   (0x0008),
> - if it is zero,    return -1 --> no kernel boot requested,
> - if it is nonzero, return  0 --> which means "top priority".
> 
> In other words, I agree with:
> 
> > -    option_rom[nb_option_roms].bootindex = 0;
> > +    option_rom[nb_option_roms].bootindex = 1;

Hmm.  That makes the boot order undefined for "qemu -kernel foo -device
virtio-blk,drive=bar,bootindex=1" when using an old seabios.  I don't
think this is a good idea.

cheers,
  Gerd



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