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SubjectRe: [PATCH v4 0/6] normalize IOMMU dma mode boot options

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
> .


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