Re: [RFC PATCH 06/11] iommu: arm-smmu: Remove Calxeda secure mode quirk

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On 18/02/2020 5:20 pm, Will Deacon wrote:
On Tue, Feb 18, 2020 at 11:13:16AM -0600, Rob Herring wrote:
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Robin Murphy <robin.murphy@xxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
Do not apply yet.

Pleeeeease? ;)

  drivers/iommu/arm-smmu-impl.c | 43 -----------------------------------

Presumably we also want to remove the definition of the option from binding too.

  1 file changed, 43 deletions(-)

Yes, I'm happy to get rid of this. Sadly, I don't think we can remove
anything from 'struct arm_smmu_impl' because most implementations fall
just short of perfect.

Right, this served as the prototype for register access hooks, but we have at least one other known user for those.

Anyway, let me know when I can push the button and I'll queue this in
the arm-smmu tree.

FWIW the quirk has proven useful in other circumstances too, but I imagine if we ever have to prototype an integration on VExpress-CA9 again, reverting this patch will hardly be the most unpleasant part :)

Robin.



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