Re: [PATCH] MIPS: fix mapstart when using initrd

[Markos Chandras <Markos.Chandras@imgtec.com>]

On 10/07/13 17:08, Ralf Baechle wrote:
> On Mon, Sep 23, 2013 at 07:40:26PM +0530, Ashok Kumar wrote:
>> Date:   Mon, 23 Sep 2013 19:40:26 +0530
>> From: Ashok Kumar <ashoks@broadcom.com>
>> To: linux-mips@linux-mips.org, gerg@uclinux.org
>> cc: ralf@linux-mips.org, Ashok Kumar <ashoks@broadcom.com>
>> Subject: [PATCH] MIPS: fix mapstart when using initrd
>> Content-Type: text/plain
>>
>> When initrd is present in the PFN right after the _end, bootmem
>> bitmap(mapstart) overwrites it. So check for initrd_end in
>> mapstart calculation.
>>
>> Signed-off-by: Ashok Kumar <ashoks@broadcom.com>
>> ---
>> This is seen after the commit
>> "mips: fix start of free memory when using initrd"
>> in git://git.linux-mips.org/pub/scm/ralf/upstream-sfr.git branch
>>
>> Tested the image on MIPS platform creating the above
>> said scenario and initrd was corrupted.
>
> And it gloriously breaks the build if CONFIG_BLK_DEV_INITRD is disabled.
> Now most configurations will fail with something like:
>
> [...]
>    LD      vmlinux
> arch/mips/built-in.o: In function `setup_arch':
> (.init.text+0xff8): undefined reference to `initrd_end'
> arch/mips/built-in.o: In function `setup_arch':
> (.init.text+0xffc): undefined reference to `initrd_end'
> make[2]: *** [vmlinux] Error 1
> make[1]: *** [sub-make] Error 2
> make: *** [all] Error 2
> make: Leaving directory `/home/ralf/src/linux/obj/lasat-build'
>
>    Ralf
>
Hi Ralf,

I just sent a patch for that

http://patchwork.linux-mips.org/patch/6028/