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

[Rene Rebe <rene@exactcode.de>]

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 <rene@exactcode.de>
>>>
>>> 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