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



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