Re: [PATCH] Fix for relocatable PowerPC kernels

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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On 07/13/2010 12:12 PM, Anton Blanchard wrote:
> Hi,
>
>   
>> Is building as ET_DYN supported upstream? We previously had reports of
>> building system of some distros to be plainly borked and usualy the
>> distro fixed their building system pretty fast. If upstream supports
>> ET_DYN, then this patch is accepted with no further questions. But if
>> it's a borked building system it may have subtle bugs and allowing it
>> would probably just suppress an early symptom of other problems.
>>     
> This is supported upstream on a number of architectures, for example
> the PowerPC configuration option is:
>
>   
Then I'm ok with your patch but I'm on wacky connection and don't want
to risk a stale lock (unfortunately bzr-ssh isn't supported on
savannah). Could someone with good access commit it?
> config RELOCATABLE
>         bool "Build a relocatable kernel"
>         help
>           This builds a kernel image that is capable of running anywhere
>           in the RMA (real memory area) at any 16k-aligned base address.
>           The kernel is linked as a position-independent executable (PIE)
>           and contains dynamic relocations which are processed early
>           in the bootup process.
>
>           One use is for the kexec on panic case where the recovery kernel
>           must live at a different physical address than the primary
>           kernel.
>
> Regards,
> Anton
>
>   
>>> 2010-07-13  Anton Blanchard  <anton@samba.org>
>>>
>>> 	* loader/powerpc/ieee1275/linux.c (grub_cmd_linux): Do not reject
>>> 	ET_DYN files.
>>>
>>> Index: grub/loader/powerpc/ieee1275/linux.c
>>> ===================================================================
>>> --- grub.orig/loader/powerpc/ieee1275/linux.c	2010-07-11 12:05:16.443242734 +1000
>>> +++ grub/loader/powerpc/ieee1275/linux.c	2010-07-12 14:56:20.301991065 +1000
>>> @@ -220,7 +220,7 @@ grub_cmd_linux (grub_command_t cmd __att
>>>    if (! elf)
>>>      goto out;
>>>  
>>> -  if (elf->ehdr.ehdr32.e_type != ET_EXEC)
>>> +  if (elf->ehdr.ehdr32.e_type != ET_EXEC && elf->ehdr.ehdr32.e_type != ET_DYN)
>>>      {
>>>        grub_error (GRUB_ERR_UNKNOWN_OS,
>>>  		  "this ELF file is not of the right type");
>>>       
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>
>   


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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