On 2019/4/8 14:32, Thomas Gleixner wrote:
> On Mon, 8 Apr 2019, Leizhen (ThunderTown) wrote:
>>>
>>> This will break systems using boot options as now, and I think
>>> this is unacceptable. If you want to do so, just introduce iommu.dma_mode
>>> on top of those iommu boot options with dma mode boot options unchanged,
>>> and iommu.dma_mode is for all archs but compatible with them.
>>
>> I just changed the boot options name, but keep the function no change. I
>> added
>> all related maintainers/supporters in the "to=" list, maybe we can disuss
>> this.
>
> Changing the name _IS_ the problem. Think about unattended updates.
>
>> Should I add some "obsoleted" warnings for old options and keep them for a
>> while?
>
> No, just keep the old options around for backwards compatibilty sake. We
> just do not add new arch specific options in the future. New options need
> to use the generic iommu.dma_mode name space.
OK, thanks for your advise.
>
> Thanks,
>
> tglx
>
> .
>
--
Thanks!
BestRegards
