Re: [PATCH] x86-64: disable the GART in shutdown

[Andi Kleen]

> I'm going to need exactly the same hook fro Calgary, as well Intel for
> VT-d, and AMD for their upcoming IOMMU, etc. How about we do
> 
> struct iommu_ops {
>   struct dma_ops {
>     ...
>   }
>   void (*shutdown)(void);
> }
> 
> And then pci_iommu_shutdown() becomes
> 
> if (iommu_ops->shutdown)
>   iommu_ops->shutdown();

I think it's cleaner if everybody registers their own shutdown handler in sysfs
Don't see any value in going through a generic layer because there is no
shared code.

-Andi


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