Re: [PATCH v3 04/17] ARM64 / ACPI: Introduce early_param for "acpi"

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On Wed, Sep 10, 2014 at 02:21:59PM +0100, Bjorn Helgaas wrote:
> On Wed, Sep 10, 2014 at 7:04 AM, Will Deacon <will.deacon@xxxxxxx> wrote:
> 
> > It's blindingly obvious that acpi=off is there to disable ACPI at boot.
> > We either support that option or we don't -- none of this `oh, well you
> > can use it in this specific case I suppose' rubbish. I'm not questioning
> > your use-case, but there's really no need to talk about an `orderly
> > adoption' when all you need to say is that your ACPI is busted and passing
> > acpi=off lets you boot with a devicetree.
> 
> Maybe we should set a taint bit or give some other indication that
> we're using a flag to work around breakage.

That sounds like a good idea. Working around breakage is a fact of life,
but the taint indicates that it's not the ideal behaviour.

Will
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