Bug#641654: nvidia-kernel-dkms: Nvidia kernel module fails compiling duo GPL-only symbols used by a non-GPL module

[José Luis Segura Lucas]

Oh, I have no idea about the problem is kernel RT related.

Best regards

El 15/09/11 01:20, Andreas Beckmann escribió:
> severity 641654 normal
> forwarded 641654 http://www.nvnews.net/vbulletin/showthread.php?t=165238
> affects 641654 nvidia-kernel-source
> affects 641654 fglrx-modules-dkms
> retitle 641654 module build fails for realtime kernel (3.0.0-1-rt-*) due to GPL-only symbol 'migrate_enable' being used
> thanks
>
> On 2011-09-15 00:04, José Luis Segura Lucas wrote:
>> Severity: grave
>> Justification: renders package unusable
> No. Only the *-rt-* kernels are not supported.
>
>> The compilations fails and the log, on
>> /var/lib/dkms/nvidia/275.28/build/make.log says, at the end, the following:
>>
>> /usr/src/linux-headers-3.0.0-1-common-rt/arch/x86/include/asm/uaccess_64.h: In
> ...
>> FATAL: modpost: GPL-incompatible module nvidia.ko uses GPL-only symbol
>> 'migrate_enable'
> That symbol is introduced by the realtime patch and is (indirectly)
> used by the nvidia module, making the module build fail, see
> http://www.nvnews.net/vbulletin/showthread.php?t=165238
>
> The module builds fine for all other kernel flavors, so you will have to
> choose between using the RT kernel and using the NVIDIA driver. Currently
> you can't have both.
>
> Possible solutions:
> * convince the RT patch developers to remove the GPL-only restriction
> * convince NVIDIA to work around the indirect migrate_enable usage
> * patch the nvidia sources yourself to not use migrate_enable indirectly
> * ...
>
> Andreas